Being a former diesel mechanic I love my 5.9 24v because it is so simple. With the NV4500 trans it makes all the power I will ever need and no repairs after 20 years .The only weak link is the lift pump starving the VP44 injection pump. A good fuel pressure gauge and keeping the filter changed is so important. Unless I wreck it it will be the last truck I ever own.
My wife and I are full time musicians and full time in our 26 foot travel trailer (30' overall). We pull it with our 2007 3500 4X4 with a fully enclosed fiberglass CargoBody cabover work van style camper. We sought out the last 5.9 (early 2007) for it's better mileage. With the cabover semi-empty (around 700 lbs) at 55 mph on level freeway, we got 25.5 mpg. Now that the camper is full of tools, and pulling the trailer (8,000 lbs), were averaging just shy of 16 mpg, which is where the 5.9 really shines, especially now that diesel is so expensive!
I have 2 of the 5.9 / 12 Valve in 1 ton trucks I uses on my farm and I love them. I retired from Union Pacific Railroad as a electrician. The newer Technology is great as long as you have a standby mechanic to keep it running. Union Pacific Railroad uses older Locomotives with mechanical blowers in there Local switch yards till about 2012, because all you had to do was fuel them check the oil and run the shit out of them. They were bullet proof.
Owned both and have love for each of them. 6.7 will work if deleted and I would recommend arp head studs. The 68rfe 6 speed automatic transmission is great when working but prone to failure with hp increase unless built. The g56 6 speed manual transmission is probably more reliable but not as much fun on the street. Like said in this video the 5.9 is more reliable but has some disadvantages too. If I was going to have to pick between the 2 I would pick the 5.9 just because of its overall reliability. That being said I really do love them both. Just my opinion. To each, their own.
Went from a 6.7 to a 5.9. I tow aprox 70,000 a year. Don't want to up set 5.9 folks, but for my need I've found 6.7 to work for me better. My 2010 6.7 provided me with 210,000 miles in that stretch I replaced 2 water pumps 1 alternator. All other repairs were not done on the power train. The truck I'm currently piloting is a 5.9. It works ok, but I have had to adjust my trip times as I'm slowed more often than in the past. I also have a hard time maintaining an exhaust gas temp that will not damage the truck. Learning to drive with new limits is I guess a personal problem to get past. The up side to this new, to me 5.9 is the fuel mileage. My new 5.9 gets almost 50% better mileage. That is the main reason I'm keeping it.
Simply put...the 6.7 was needed to achieve more power but still meet the more and more stringent emission requirements than the 5.9 could. The 5.9 is still the dominate engine in the performance world.
The 5.9 does well in the performance world but the big thing for performance cummins guys is a 6.4 cummins. Alot of racers and sled pullers use a 6.4 these days and yes I mean 6.4, not 6.7.
Hey man, i have been watching a couple of your videos recently and just wanted to say your doing a great job. Thank you for your clarifications and knowledge on the subject, you explain things very well and i just wanted to say job well done.
@@jayirving6996 On my 06 mega cab my moose antlers stay out bud! I'm use to them like that its not always about looks lol dont be a goon! I tow trailers almost every day and im not ganna waist my time adjusting a mirror every day twice a day minimum. i have 4th gen mirros with the large convex. You have to adjust that by hand so thats not happening lol
Great video! I have a 1999 2500 5.9 since new. Currently at 392000 miles. I've pulled everything under the sun and I am still on the original automatic transmission. Only problem I've had is the VP44 injector pump. The last VP44 I replaced went 170000 miles on it. I changed the lift pump out every 60000 miles regardless to keep the VP44 alive. I am in the middle of refurbishing this old gem and started out with a Fass lift pump and new injector pump. It's been an amazing truck!
Install a fuel pressure gauge after the lift pump so you know it’s working properly. That’s what I did with my 2002 after my first lift pump went bad and destroyed the vp44
I have a 2001 5.9. Straight up the 5.9 sounds so much better. I still love it when I go into parking lots and heads turn. Obviously sound doesn’t mean it’s better but I like it.
Not bad, but you do complicate the issue with 12 more valves. Not to mention the added cost for the conversion. However it is a great choice when compared to any of the computer run machines.
Well you mention deleting things on new trucks and talk about adding things like new turbos so what would be best is to get a junk yard 24v cummins then converted p7100 this way you don't have to reprogram ecu's there's no way the ecu can change mechanical pump
Im putting my 182k 02 24v in my 06 megacab with that configuration when the motor thats in it goes its got some time left though its only got 230k right now
You can upgrade the 6.7 by installing the 5.9 head, injection system, and ecu. Firepunk Diesel has a video on that While there may be some benefits to running the stock vgt turbo you will quickly find its disadvantages if you’re going for maximum power. It is actually quite inefficient with a high drive to boost pressure ratio so even if you’re running your truck basically stock you’re still better off with a relatively small fixed geometry turbo (BorgWarner S380 or S400) There are a lot of other parts that interchange on these engines such as water pump, oil pump, camshaft, valve train, front cover, etc. The 6.7 will bolt in to a previous generation truck with no modifications. This video mentions head gasket failure- the 5.9 head gaskets have been known to hold very high boost pressures even when using oe headbolts this is not the case with the 6.7 Both motors can make over 1,000 hp with compound turbos and larger injectors. Pretty much the only reason for Dodge to make the switch is emissions control. This increased displacement allowed them to comply will still competing with Ford on power output
I have the 6.7 on our ranch. Pulls heavy trailers with livestock and/or feed and it works great. The trucks in this video... A laughing stock to an American producer. Stay in the city and keep pretending food comes from the back of the store.
I have more than 1 Cummins engines with emissions still intact and operational with over 750,000 miles and a couple over 1,000,000 miles. Requires more maintenance but doesn’t make them unreliable.
One thing about the 6.7 is the rod angles which is a weak point vs the 5.9. 6.7s bend rods easily when lots of fuel is dumped at low RPM. Would be a good idea to go with forged rods if you're pushing more than 1800 ft lbs of torque on a stock 6.7 bottom end.
@@charlesisbell4340 5.9 had no emissions other that a catalytic converter. In 2007.5 with the move to 6.7L stricter emissions standards came in to play.
As a Cummins tech I will tell you a 5.9 has it all over the 6.7. Just a 12 valve 5.9 will net you 50% more than a 6.7 and it’s all mechanical. Zero issues.
@@Dustrunnersauto the 400hp with CGI block I believe no longer has siamese cylinders. Siamese cylinders result in bores that can go out of round and are undesirable for that reason.
Actually there is no passage between 1 and 2 cylinders (or any of the others). If everyone here can image lining up 6 coke cans in a row. The siamese cylinders are joined like that. There are provisions for improved flow as close as they can get so that there are no cooling issues between the cylinders. The rest is basically the same as previous years with coolant flowing around the cylinders on each side. Coolant can also flow from side to side at the front and rear of the block. Siamese cylinders actually add a great deal of integrity and rigidity to the engine block. Reply
My dad had a brand new 05 5.9 for pulling a toy hauler to the dirt bike races when i was in high school. When i got my liscence in 2008 it became the truck i got to drive around. To this day it is my favorite vehicle, I’m looking at buying another one now. I currently have a GMC sierra that needs something new fixed one thing after another.
I've had and worked the heck out of both and the 5.9 is more reliable and better mpg and I think it sounds better but the 6.7 is still reliable but when you get rid of all the bull shit on it it's definitely much stronger
Some guys swapped parts from the 5.9 to their 6.7s and ran them with the vp44 due to emissions. Said driveability was improved The 6bt debuted in Case heavy equipment. One can source parts for the one on the dodge from them.
Hello, as someone else said that the all mechanical 5.9 is the best. 91 N/IC stock with a bit of added timing I regularly obtain 20-24 MPG, replaced the 727 (37RH) to a 46RH with 3.08 rear gear set 335800 Miles on the ticker. I don't ever expect to sell and oil samples show minimal wear, 1.5 Million miles expected (ill probably die before that). Best purchased I ever made and great mileage. Love that pickup and still in todays road climate I love to drive it. Pretty darn good for an old beast.
I have a 1991 Dodge duly 35 runs great never had any issues I have over 1,000,000 miles does not smoke clean body and motor I just recently changed the fuel pump injector pump rebuilt it put a new one other than that no problems runs great
@@Man_in_a_Gucci_Suit no way of proving it. None of the first gens would clock that many miles on the odometer. Gears always stripped way before. Mine quit at 181k.
This is a joke of a comparison. Comparing pre emissions to post emissions is apples and oranges.... and lets face it the old 5.9 12 valve that is quickly eliminated from comparison here is the only one of the engines that can get 25-30 mpg and run a million miles... mainly due to... yup NO EMISSIONS, and mechanical everything.
@@Redsfanatic32 I've owed all three and my dad's 5.9 common rail, gets 17mpg with a 6 speed and 3.55, his 99 vp44 24v 5.9 got 18.5-19mpg with a 5 spd and 4.10 gears, his 95 12v 5.9 with an auto gets 19-20 with 3.55, and my 96 with 12v 5.9 gets anywhere from 20-25 with a 5 speed and 4.10 gears sitting at 400k miles, I got 20 pulling an 18k lb trackloader
@@chazlewis900 I will agree the 5.9CR is just reliable but fuel mileage is no comparison. I own an 06 5.9 six speed and 3.73 rear I only get 15 empty. My brother has a 97 12V 5 speed with 3.73 rear and he get 28 empty.
I wouldn't trade my 2005 Ram 3500 5.9L Cummins for love nor money. Still going strong. Service and replacement parts as needed. Almost 300k on the clock and still tows and pulls like the day I bought it.
The 2003-2007 actually does have egr. It has in cylinder EGR via the camshaft. The lobe separation anges are closer than on the pre 2003. 98degrees vs 106degrees I believe. Closes exhaust valve a little early to trap exhaust gas.
SlimJim, Hopefully you will see this question... or anyone else who knows... tia for your reply. Will an older design cam eliminate the IN CYLINDER EGR ???...
@@RJ-sr5dv Hey buddy. From my understanding, having the vp44 24 valve 98.5 to 2002 camshaft is the best stock camshaft cummins ever put into the 5.9. In short answer, yes, a cam upgrade will eliminate most if not all of the cylinder egr but it should be noted that cummins also had other variables in the mix to achieve in cylinder egr, and to be emissions compliant, such as the smaller turbine housings on the he341 and he351 turbochargers as well as different emissions friendly ecm programming and I'm sure that the piston bowl shapes, injector spray angles, injection events (which are different from 2003-2004.5 to 2005-2007) are a factor as well. If you do a cam swap, it should take care of most of it but I would do custom tuning too from a place that has tested the tunes on a dyno with that cam in a common rail engine and with close to the setup that you will have. Hope this helps brother!
I have a 5.9 12 valve 398000 miles pulling fairly strong yet and a 6.7 203000 pulling strong yet both start without hesitation in the cold Wisconsin winters. I love them both for there abilities and reliability. The best of both worlds.
2006 5.9 is a great platform for those who want great reliability and the ability to make great power without hurting the pockets; G56 manual trans is even more desirable.
Have had 3 3rd gen rams with 5.9s and 48REs. Great trucks. 1st one was all stock and beautiful. No complaints. 2nd one was 300k miles and I built it to the T and it made 749whp with room to go (didn’t want to blow up my 300k mile block) also took lots of trans work and the front end was poop. 3rd one just had a smarty touch, Intake, exhaust and mild trans build, good truck. I now have a 2021 6.7 and it absolutely destroys the 5.9s in power department. 6.7 deleted is 100% superior in my mind
My 1st 06 was so reliable and powerful I had to get another one, I have had 211 vehicles and the 06 dodge 2500 has by far been the best and most reliable
I have 3 notes. 1: the term is destroking where they’re putting 5.9 cranks into 6.7 blocks. Resulting displacement is 394ci. 2: The vgt uses the same 60/86 compressor as the 04.5-07 5.9’s, and the same turbine wheel (I’ve measured many of them, they all fit in the same hole, but there’s a 3-4mm spread in inducer/exducer measurements), and the vgt itself is primarily there to facilitate ego by creating higher backpressure. 3: head gasket failures are principally due to incorrect injection timing. Basically to much timing for the fuelling puts the pressure spike too close in the wrong spot. My preference is the 6.7 due to its ability to spool significantly larger turbos with ease.
I'm very happy with my 08 6.7. Full delete, banks turbo and efi live tune. I went with a modest 100 hp increase. All the power I could dream of and 21 mpg on on long trips with cruise set at 70 with a 6 in lift and 37's. I've had no issues with it in the 3 years ive had it. I run Delvac and change the oil and filters every time I service my freightliner. Intervals are usually 4 to 5k.
All that was already done when I bought it except the tune. I had a different tune put on it. Paid $18k for it. Previous owner was broke and needed it gone quick. Been driving it 6 years. Tires, belts, water pump, shocks and U-joints is all I've had to replace. Bought it cash. So yes I got a fantastic deal. If you need it I can back it up to your face throw a chain and yank the foot out of your mouth. Know what you are talking about before you run your suck!
I own both a 2007, 5.9 and a 2018 6.7. Love them both. My 2018 is a manual and 2007 automatic. The 5.9 seems to pull better in ice and snow without the tires losing grip. The 2018 tends to over power and spin. The 5.9 had about the same fuel economy as my 6.7 driving from Alaska to Texas. With both pulling roughly 1300lbs of weight. I did delete my EGR and DEF and added some tunes to my 6.7. Which greatly increased my fuel economy and saved money not buying DEF fluid all the time. Now I hunt in my 5.9 and pull my ATV’s. My 6.7 I pull my 5th wheel on long highway trips.
Honestly. I think all turbo Diesel engines are pretty amazing. They each have their flaws, but all can be made “bulletproof” without a whole lot of money. I have a 2011 F250 with the 6.7 diesel. I’ve done a few things to prevent failure and it’s been nothing but outstanding work truck and fast. I love the Cummins and duramax seem great too, Allison transmissions are always nice. But a lot comes down to maintenance. Diesel is a different beast. Myself, I like to drain my fuel filter every so often and replace them bout every 3 oil changes. Most people won’t and bad things happen
@@braveheart2785 well. I believe I read that in a manual somewhere to change them every 15,000 miles, so 3 oil changes for me. I learned that for a Diesel engine the fuel system is a huge part, expensive, and the fuel pump and glow plugs rely on clean diesel for lubrication. And the fuel filters are cheap too. 1 fuel filter, 1 fuel filter/water separator.
6.7 with vgt is in another league towing heavy, and the 6spd at with it makes it so much better than any 5.9 truck ever dreamed of being The 6.7 doesn't "blow head gaskets", the owners do when they push drive pressure beyond the compressor map safe efficiency range, by running super duper cool race car tuner boxes to add 300 hp Anyone who says otherwise has never used both, the 4x4 5.9 trucks in tow mode are screaming at 65mph, while the 6.7 truck can tow in 5th or 6th and run 80 loaded to the hilt at an easy rpm, although 5th is better for it obviously The riced out trucks at the beginning were definitely comical The 5.9 has no emissions garbage so it will always be called the more reliable engine, but the dpf has nothing to do with the engine being reliable or not, that's a totally separate emissions system.. They're both the best engines to have ever been put in a light duty truck and probably always will be...
It does not reduce reliability, it removes all reliability as 6.7 emission systems will fail. I own both, currently 1 6.7 (have owned 2) and 4 5.9 trucks. For driveability/street both being modded the 5.9 wins period. For pure power/torque (max hp pre-loading boost drag racing/tractor pulls or 800hp or less towing) 6.7 is king, there is no substitute for displacement. That being said, you will spend 1-3k+ a year cleaning/replacing emission systems (that are proven to not reduce emissions in real world applications, reason they are used: invest/law require to buy/use) on a street legal 6.7 as you warranty does NOT cover these systems, read it. Now if you make the 6.7 illegal for the street by removing the egr and dpf and def systems it is the superior power plant for max hp applications and just as reliable as the 5.9. If you want to understand why the current emission systems do not work, ie do not help the environment, they reduce power when in action thus you press the accelerator further down burning more fuel..... That is why 10-15 max mpg 6.7 towing, 16-21 mpg 5.9 towing both trucks making the same horsepower. Food for thought.
The F--yards in the government fail to recognize that when it comes to diesels, choking them with emissions crap results in higher fuel burns on bigger engines and ultimately MORE EMISSIONS...
you have the injector firing voltage backwards. We are working through this issue trying to run the more reliable 6.7 injector in a 5.9 truck running the 5.9 ecm. The 5.9 injectors fire at 18v and hold at 18v the 6.7 injectors fire at 24v and hold at 18v so we are getting a sluggish opening on the 6.7 injectors causing a rough start.
'02 24v with HO 5.9 engine and dreaded VP-44 pump. I did have the OEM pump give me problems at ~ 65K miles but it never quit. The dealer swapped it out under warranty and it cost me zilch! At 165K we're still running strong and I wouldn't trade this rig for anything new on the market. With Bosch RV injectors and a Quadzilla mileage chip I'm pulling around 320 HP and >600 FT lbs of torque. I can keep up with most anything on the road and get a steady 19 MPG (that's with 1000lbs of camper in the bed). I'll keep this one thanks!
5.9 is a more reliable engine, more fuel efficient, however the 6.7 pulls and works so much better! I’ve owned and worked both.. as a daily, I’ll take my 06 5.9, if I’ve gotta haul heavy weights and push a lotta wind I’ll take the 6.7 hands down.
i like my 12 valve hands down did a swap.out last year from a 6.0 powestroke to the 12 valve with the p pump i love it so reliable and it sounds sooo good too
"03 3500 Laramie. Owned it since 07 and have modified it with many, many upgrades geared towards reliability (To many to mention). Can say with only 130K it is an Awesome truck. Solid as can be. Planning on another $20k of upgrades on power, trans and more suspension upgrades. Less expensive investment than one 15 years newer!. Great platform
Yessir towing is the point of the cummins, people joke on my grandfathers 24 valve thats been passed down to me but i find it funny that these kids have tow mirrors on their trucks and ridiculouse rims and tires and they aint even using it for what its meant for. So what i cant roll coal, i can tow a damn church.
I've own Mopar since I started driving in mid 70's. Challengers, RR's, Fury's Chargers, trucks etc. I've been away from classic auto seen for awhile now / was looking for a project. I found an unmolested bone stock (except 35's and aftermarket radio), 97, 5.9 P-pump w/5sp with easy 222,000 miles no rust CA truck. From reading the comments... I think that I made a good choice. Thanks for the upload.
I just bought both lol got a 89 5.9 and love it all around I bought a 2012 brand new and love the power the 89 is stock the 6.7 is deleted and tuned and I have put over 200k on the 6.7 and pulled a lot of heavy heavy things and I don’t treat her nice and not a single break you must build the truck for the task your using it for to get the best truck
I have my 5.9 24v, for 14 years, only had to change the water pump, belt tensioner , fly wheel sensor, clutch and belt few times. Now is in his 494,000 km, at is still purring like kitten. With Lucas oil, engine running more quite!
Thanks, great comparison. Myself I prefer the 5.9 for reliability, and better fuel economy in general. My 2002 LB/4X4/4 door was getting about 24 MPG with full cab and bed (not towing).
Also you have to take into consideration of the ho second gen they’re kinda rare but mine has 535000 miles on it and only been through 2 fuel. Pumps 1 starter and 1 turbo but if you’ve ever been in the ho second it’s a totally different animal
2002 Dodge Ram 5.9 Cummins 285675 miles still going strong only mods I've made are 5 stage comp chip , cold air intake , 4 inch exhaust & fass fuel pump system ! Most reliable motor I've ever had ! Bought truck new ! Can't speak for the 6.7 as I've never owned one or drove one !
I've owned all three models of the engine and understand each was a well thought out natural evolution of the prior ones. My 12 valve had 400K on it when I sold it and its running around yet today. My 24 valve 5.9 was just as dependable but suffered from poor quality components such as step pump and water dispersal system. My 6.7 has ran flawlessly for 188K with only minor issues with the TIPM. Cummins is in a different league than the competition so any comparison is pointless.
Problem is, everyone is on the delete train. You don't need to delete the emissions systems.... Then, when they have problems with their engine, they suprised pikachu and blame it on the emissions system, creating a false narrative. The engine was designed to run with the equipment it has. Not run with a S400 turbo, deleted egr system, dpf, and 200 HP injection map in the ECM.
I have a modified 6.7 and two stock 12 valves. I have not drove a truck that makes more power then my 6.7, but it was very expensive to buy and build. Both 12 valve trucks are very reliable other then transmission issues. I don't think you could build a 5.9 to a 6.7 potental, but the 5.9 is a very reliable engine, especially the 12 valve. The second gen 24 valve VP44 5.9 engines make good power but suffer fuel pump issues (they can be fixed though). The third gen 5.9 common rail engines make good power, they are reliable, and they can be built to make awsome power. They can give a 6.7 a really good run for its money, but when comparing apples to apples the 6.7 will out pull the 5.9.
Jeremy Smith what if you just want a daily driver and towing a max of 14,000 lbs a few times a year and go off-road a few times a month? Please tell me 12v 5.9 lol
I own 95 12 valve 5.9 stick Also own 08 6.7 450 auto deleted My fav is the 5.9 virtually bulletproof ... although having great issues maintaining the body
what all have you had to do to to the engine, tranny, and truck get those miles? I've got an 06 5.9 with only 143,000 miles. When will I need to replace serious parts before it's not worth keeping the truck?
@@kaylatuttle9988 transmission at about 220000 the rear end at 190000 the driveline is original the engine has never had the head or pan off I replaced the injectors at about 300000 and the water pump even though there was nothing wrong with them 1 alternator 1 fan hub
Have a 1991 D350 with the 5.9 12 valve. Purchased new on Halloween Day in 1990. Now has 486,000 miles and still going strong. Replaced the water pump, alternator, starter at 400,012 miles. Nothing else has been touched on the engine. Still gets around 22 miles a gallon unloaded and about 16 mpg pulling gooseneck with 580 Case backhoe. Not a speed demon but gets the job done. Also have a 2007 3500 with the 6.7. I've constantly had wiring harness problems, and injector problems, head gasket replacement and other items throughout the truck with only 125,000 miles. It's a great truck when it runs but not trustworthy so I'll stick with the 5.9 12 valve.
How I see it both are good but Fall into different categories the 5.9 for towing /traveling the 6.7 drag strip racing and messing around but at the same time both can do the two things 🤷♂️ just my opinion
I have a '93 D250 with a bone stock 5.9 12v and the 5-speed Getrag tranny. I've owned it for 12 years and it just turned 200k miles. I've never done anything to the engine but change the oil, oil filter and fuel filter, flush the coolant and adjust the valves. I'm now thinking of bumping up the power a little, but I don't want to get to the point where I need to change the clutch out or overpower the rest of the drivetrain. I just want to be able to keep a little more speed while climbing grades with my truck camper and towing my car. I'm searching for a video that explains in detail the process of turning up the fuel screw, adding a custom fuel pin and different governor spring. I've worked on my own vehicles for 50 years, but have never done anything like this to a diesel. And I've read of some others trying this but ending up with an engine that runs worse than before. Trying to decide if I need to take it to a diesel mechanic instead. Can anyone recommend a good video explaining the process?
I have had both and I do have to say the 6.7 definitely has a lot more power but mine did blow the head gasket and injectors. To where my 5.9 hasn’t had those problems. But my 5.9 did need a transmission rebuilt and the 6.7 didn’t. So it’s really a toss up. I do know that you can tweak the 5.9 motor to add more power really easily. But it just depends on how much you want to spend. I believe both are great motors
5.9 beat motor ever for pick ups bomb proof enough power for what ya need no need to be doing 80 hauling 25k but the best thing I like about them especially the old 24v's an 12v's is that old school rig sound cannot beat it
I love my 5.9, it’s a beautiful motor. Does everything I ask of it. Maybe when I trade her in I’ll think about the 6.7 but honestly I plan on finding my same truck just with less miles.
I vote for my 98 12 valve with a swapped in 6 speed manual,reliable, makes decent power ( not much done besides fuel plate) and gets great fuel economy Oh an I almost forgot P pump baby!!!
1966cambo Yep, that’s the best combination ever in the dodge. I’ve got a 2001 with the six speed, almost rebuilt it to a p-pump 24 valve, but thought why not just get a 12 valve.
I have three also 2000 dually 2wd 170000 2004 dually 4wd 140000 nv5600 and 2017 dually 4wd 30000 and it’s sold guy is coming to pick it up in about 2weeks epa has ruined everything!!
Very good information, would like to see more about these engines, I have owned both for over 15 years and worked both. My 03 was a beast and very reliable pulled great, the 5.9 pulls great but can not compare to the power of the 6.7 that I own now, both great engines, Cummins for life.
I have a 97 5.9 12v auto and I gotta say the ugly B is completely bullet proof. The owner before didn't take great care of the body but the motor is pretty great for the miles it has. Right now I have to work on the suspension and possibly a frontend rebuild. 230k miles and counting.
I own both. '03 5.9L 6 speed manual and '13 6.7L full delete. I loved my 5.9L so much.. almost 500K on it. But man! that 6.7L hauls!!! As much as I like driving standard, the 6.7L with aisin is the best truck I've ever driving. It Feels like 50% of power increase, easy. Both engines have been exceptionally reliable. But still cant wait to go electric...
Bought a Ram 99 CTD new, in dec 99. Put 241,000 miles on it in 5.5 years. Engine was solid, lift pumps...not so much lol I think I went thru 4 of them. Also spring a shaft leak on the VP-44 ...I attributed that to my switching between hi and lo sulfur diesel fuel a lot (yes, I ran off road 3,000 ppm sulfur in it as well as on road 500 ppm - and sometimes BP Diesel Supreme which touted 50 ppm sulfur) So I think this up and down sulfur content caused the shaft gasket to deform giving me a fuel leak into the crankcase. Luckily I bought it early and did no internal damage. The CTD 5.9 24-valve Was a great engine.
Its all about the mechanical 12 Valve 5.9 man. A true LEGEND.
Definitely the most reliable cummins
Bingo
I'll take a deleted 6.7 anyday so I can actually pass someone with a load lol. There plenty of 6.7s out there with a million miles
@@rickshiandmoku4128 Sure there are, but we're talking about less electrical junk to go wrong
@Josiah Juan Get outta here fuck
Being a former diesel mechanic I love my 5.9 24v because it is so simple. With the NV4500 trans it makes all the power I will ever need and no repairs after 20 years .The only weak link is the lift pump starving the VP44 injection pump. A good fuel pressure gauge and keeping the filter changed is so important. Unless I wreck it it will be the last truck I ever own.
My father in laws, with a manual struggles a bit more pulling my 43 foot fifth wheel than my 6.7
I had a 97 12V that I shouldn't have sold. They don't make half the power of a modern diesel, but they were reliable.
Yeah. I love mine too. Bought it new in '98, but it is rusting a lot. I have put lots of upgrades on it and I am sure it will last many more decades.
@Bill House Hey what type of lift pump you recommend changing it out with?
just picked up a 2000 5.9 with 60k miles and an allison tranny for 900 bucks, everyone tells me its a great score (i just need the turbo).
My wife and I are full time musicians and full time in our 26 foot travel trailer (30' overall). We pull it with our 2007 3500 4X4 with a fully enclosed fiberglass CargoBody cabover work van style camper. We sought out the last 5.9 (early 2007) for it's better mileage. With the cabover semi-empty (around 700 lbs) at 55 mph on level freeway, we got 25.5 mpg. Now that the camper is full of tools, and pulling the trailer (8,000 lbs), were averaging just shy of 16 mpg, which is where the 5.9 really shines, especially now that diesel is so expensive!
I have 2 of the 5.9 / 12 Valve in 1 ton trucks I uses on my farm and I love them. I retired from Union Pacific Railroad as a electrician. The newer Technology is great as long as you have a standby mechanic to keep it running. Union Pacific Railroad uses older Locomotives with mechanical blowers in there Local switch yards till about 2012, because all you had to do was fuel them check the oil and run the shit out of them. They were bullet proof.
those switcher can take beating like my 12v cummins
I work out of livonia for u.p.
Owned both and have love for each of them. 6.7 will work if deleted and I would recommend arp head studs. The 68rfe 6 speed automatic transmission is great when working but prone to failure with hp increase unless built. The g56 6 speed manual transmission is probably more reliable but not as much fun on the street. Like said in this video the 5.9 is more reliable but has some disadvantages too. If I was going to have to pick between the 2 I would pick the 5.9 just because of its overall reliability. That being said I really do love them both. Just my opinion. To each, their own.
I love driving my 2015 3500 drw with the g56. But I've always enjoyed rowing gears. Some stuff has fell off on a dirt road.
Grabing gears is way more fun then a auto
Went from a 6.7 to a 5.9. I tow aprox 70,000 a year. Don't want to up set 5.9 folks, but for my need I've found 6.7 to work for me better. My 2010 6.7 provided me with 210,000 miles in that stretch I replaced 2 water pumps 1 alternator. All other repairs were not done on the power train. The truck I'm currently piloting is a 5.9. It works ok, but I have had to adjust my trip times as I'm slowed more often than in the past. I also have a hard time maintaining an exhaust gas temp that will not damage the truck. Learning to drive with new limits is I guess a personal problem to get past. The up side to this new, to me 5.9 is the fuel mileage. My new 5.9 gets almost 50% better mileage. That is the main reason I'm keeping it.
My 6.7 gets 21 Mpg at 85mph. 16 to 18 towing my 15k camper. You have to emission delete.
@@mrrod3004 I've worn through another truck since I wrote this. I've got a 2011 now. I'll try your suggestion.
Simply put...the 6.7 was needed to achieve more power but still meet the more and more stringent emission requirements than the 5.9 could. The 5.9 is still the dominate engine in the performance world.
Not so much...
Yeah, no.
Crazystuffyousee a few 5.9 did come with egr to meet California emissions
The 5.9 does well in the performance world but the big thing for performance cummins guys is a 6.4 cummins. Alot of racers and sled pullers use a 6.4 these days and yes I mean 6.4, not 6.7.
Emissions what's that.....it's all long gone
Hey man, i have been watching a couple of your videos recently and just wanted to say your doing a great job. Thank you for your clarifications and knowledge on the subject, you explain things very well and i just wanted to say job well done.
Why so much footage of mall crawlers?
Because they're the ones getting in front of cameras
It should be illegal to have tow mirrors out unless u have a trailer behind ya.. Looks so Fuckin dumb!
Where’s the mud grips at?
@@jayirving6996 On my 06 mega cab my moose antlers stay out bud! I'm use to them like that its not always about looks lol dont be a goon! I tow trailers almost every day and im not ganna waist my time adjusting a mirror every day twice a day minimum. i have 4th gen mirros with the large convex. You have to adjust that by hand so thats not happening lol
@@tyrenner same here. Even dumber is changing out their OEM's for Shiny new tow mirrors, to match their shiny old hitch.
Great video! I have a 1999 2500 5.9 since new. Currently at 392000 miles. I've pulled everything under the sun and I am still on the original automatic transmission. Only problem I've had is the VP44 injector pump. The last VP44 I replaced went 170000 miles on it. I changed the lift pump out every 60000 miles regardless to keep the VP44 alive. I am in the middle of refurbishing this old gem and started out with a Fass lift pump and new injector pump. It's been an amazing truck!
So the 5.9 cummins with a 4 speed automatic is reliable?
Install a fuel pressure gauge after the lift pump so you know it’s working properly. That’s what I did with my 2002 after my first lift pump went bad and destroyed the vp44
Wow, you answered my question and more. I've always liked the 5.9 though.
Got an 06 5.9 24 valve mega and love it. But those older 12 valves just sound better!!
I have an 06 5.9 but 24 valve crew cab and i love it.
I have a 2001 5.9. Straight up the 5.9 sounds so much better. I still love it when I go into parking lots and heads turn. Obviously sound doesn’t mean it’s better but I like it.
Thepriest39 I also have the 2001 5.9 HO with the NV5600 6spd we ain’t sneaking into anyplace!
👍🏽👍🏽👍🏽👍🏽
@@damiandelapp5490 97 7.3, you can't sneak anywhere with the older diesels
I got a 2002 6 speed 5.9. Best engine/trans combo in my opinion!
Great engine, take care of it, and it will take care of you.
Never owned one up until now my 6.7 89k miles seems to run great and I can feel the power it has.
5.9 24v with p7100 most power and reliability for ever
Not bad, but you do complicate the issue with 12 more valves. Not to mention the added cost for the conversion. However it is a great choice when compared to any of the computer run machines.
Well you mention deleting things on new trucks and talk about adding things like new turbos so what would be best is to get a junk yard 24v cummins then converted p7100 this way you don't have to reprogram ecu's there's no way the ecu can change mechanical pump
Im putting my 182k 02 24v in my 06 megacab with that configuration when the motor thats in it goes its got some time left though its only got 230k right now
You can upgrade the 6.7 by installing the 5.9 head, injection system, and ecu. Firepunk Diesel has a video on that
While there may be some benefits to running the stock vgt turbo you will quickly find its disadvantages if you’re going for maximum power. It is actually quite inefficient with a high drive to boost pressure ratio so even if you’re running your truck basically stock you’re still better off with a relatively small fixed geometry turbo (BorgWarner S380 or S400)
There are a lot of other parts that interchange on these engines such as water pump, oil pump, camshaft, valve train, front cover, etc. The 6.7 will bolt in to a previous generation truck with no modifications.
This video mentions head gasket failure- the 5.9 head gaskets have been known to hold very high boost pressures even when using oe headbolts this is not the case with the 6.7
Both motors can make over 1,000 hp with compound turbos and larger injectors. Pretty much the only reason for Dodge to make the switch is emissions control. This increased displacement allowed them to comply will still competing with Ford on power output
I have the 6.7 on our ranch. Pulls heavy trailers with livestock and/or feed and it works great. The trucks in this video... A laughing stock to an American producer. Stay in the city and keep pretending food comes from the back of the store.
Case IH has a 5.9 cummins. I really like how efficient that engine is. Still use that tractor and it's 33 years old.
I have more than 1 Cummins engines with emissions still intact and operational with over 750,000 miles and a couple over 1,000,000 miles. Requires more maintenance but doesn’t make them unreliable.
Are these 5.9 and what years or are the 6.7 and what years
I'll take the 5.9 common rail. 325hp, 610 torque out of the box. And who needs all the black smoke 🤢? That's just fuel out the tailpipe.
I've got an 05. And my work truck is a 6.7
I'll take the 5.9 over the 6.7 any day of the week.
@@DieselDog1982 might wanna do some research bud, 05 HO was 325-610. Says right on the engine tag.
J J haha it’s right on the data tag boy
@@duncandmcgrath6290 he is probably just a salty ford boy who cant comprehend those kinda numbers prior to 2007.
It’s 325 horse at the crank. And 610 foot pounds at the crank.
One thing about the 6.7 is the rod angles which is a weak point vs the 5.9. 6.7s bend rods easily when lots of fuel is dumped at low RPM. Would be a good idea to go with forged rods if you're pushing more than 1800 ft lbs of torque on a stock 6.7 bottom end.
That's like comparing the 7.3 and 6.7 Powerstroke
It all depends on what you want in power
In both cases the 6.7 is superior
Thanks for the input. Just looking to tow. Think the 5.9 with no emissions is probably the way to go.
It is as long as you live somewhere that doesn't do emissions testing.
@@charlesisbell4340 5.9 had no emissions other that a catalytic converter. In 2007.5 with the move to 6.7L stricter emissions standards came in to play.
5.9 cummins better
My dad has a 2004.5 5.9. He pulls his 31ft camper with it. And it’s a beast. Almost 200k miles on it and still runnin strong.
As a Cummins tech I will tell you a 5.9 has it all over the 6.7. Just a 12 valve 5.9 will net you 50% more than a 6.7 and it’s all mechanical. Zero issues.
5.9 cummins is by far the better engine my uncle has a 2 6.7 cummins and emissions are killing his trucks and he had a 5.9 and had no problems
I really love the detail you guys put in the videos. 1000 tq from factory is crazy! I like the 6.7 more. How about a video about the VG30DETT?
I’ll put it on the list of videos to make!
@@Dustrunnersauto the 400hp with CGI block I believe no longer has siamese cylinders. Siamese cylinders result in bores that can go out of round and are undesirable for that reason.
@@Dustrunnersauto the vg and vq 30 Nissan are some damn fine v6 engines!
Actually there is no passage between 1 and 2 cylinders (or any of the others).
If everyone here can image lining up 6 coke cans in a row. The siamese cylinders are joined like that. There are provisions for improved flow as close as they can get so that there are no cooling issues between the cylinders.
The rest is basically the same as previous years with coolant flowing around the cylinders on each side. Coolant can also flow from side to side at the front and rear of the block.
Siamese cylinders actually add a great deal of integrity and rigidity to the engine block.
Reply
My dad had a brand new 05 5.9 for pulling a toy hauler to the dirt bike races when i was in high school. When i got my liscence in 2008 it became the truck i got to drive around. To this day it is my favorite vehicle, I’m looking at buying another one now. I currently have a GMC sierra that needs something new fixed one thing after another.
I've had and worked the heck out of both and the 5.9 is more reliable and better mpg and I think it sounds better but the 6.7 is still reliable but when you get rid of all the bull shit on it it's definitely much stronger
Some guys swapped parts from the 5.9 to their 6.7s and ran them with the vp44 due to emissions. Said driveability was improved
The 6bt debuted in Case heavy equipment. One can source parts for the one on the dodge from them.
I have a 1995 5.9, best cummins by far.
Me too,600k and counting..No DEF and still smog exempt!
Me too and it’s been free and clear since 2003🤑🥰👍🏻
Hello, as someone else said that the all mechanical 5.9 is the best. 91 N/IC stock with a bit of added timing I regularly obtain 20-24 MPG, replaced the 727 (37RH) to a 46RH with 3.08 rear gear set 335800 Miles on the ticker. I don't ever expect to sell and oil samples show minimal wear, 1.5 Million miles expected (ill probably die before that). Best purchased I ever made and great mileage. Love that pickup and still in todays road climate I love to drive it. Pretty darn good for an old beast.
'97 5.9 12 valve with a "P"pump for the street & 4WD
This emissions crap needs to end
Absolutely 👏👏👏
When little 19-28 year old retards stop ROLLING COAL..Diesel Trucks are like firearms..Not EVERYONE should OWN one!!!
I wish I was a diesel mechanic 30 years ago when there was no emissions control and real engines
Eletric trucks are the future
@@isaaclawrence1113 highly doubt it.. electric can't go the distance, not for trucks, not for trains, not for ships
I'll take a deleted 6.7 anyday
Deleted 6.7 all day everyday
12 valve though he didn’t talk about, but yeah deleted 6.4 power stroke or deleted 6.7 Cummins anyway all day
Ya 6.7 deleted from the truck and a 5.9 put in
5.9 block with a 6.7 head put together for max destruction
@@noahranker4133 power isn't everything moron. Some of us (especially mechanics like myself) like easy serviceablity, fuel efficiency and reliability.
It's a great thing about a non-inspection state you can do whatever you want to your vehicles
I have a 1991 Dodge duly 35 runs great never had any issues I have over 1,000,000 miles does not smoke clean body and motor I just recently changed the fuel pump injector pump rebuilt it put a new one other than that no problems runs great
Make a video with it as proof
Lol proof.... Its a cummins. Theres your proof.
@@Man_in_a_Gucci_Suit no way of proving it. None of the first gens would clock that many miles on the odometer. Gears always stripped way before. Mine quit at 181k.
This is a joke of a comparison. Comparing pre emissions to post emissions is apples and oranges.... and lets face it the old 5.9 12 valve that is quickly eliminated from comparison here is the only one of the engines that can get 25-30 mpg and run a million miles... mainly due to... yup NO EMISSIONS, and mechanical everything.
The first 24v with the VP 44 set up were good too, but still not like the old 12v
Cp3 5.9s are just as reliable and can get just as good if not better fuel mileage than the ve44 or p7100 12 valves.
@@Redsfanatic32 I've owed all three and my dad's 5.9 common rail, gets 17mpg with a 6 speed and 3.55, his 99 vp44 24v 5.9 got 18.5-19mpg with a 5 spd and 4.10 gears, his 95 12v 5.9 with an auto gets 19-20 with 3.55, and my 96 with 12v 5.9 gets anywhere from 20-25 with a 5 speed and 4.10 gears sitting at 400k miles, I got 20 pulling an 18k lb trackloader
The 5.9 24V has several trucks in the million mile club as well. Mine with an eco tune and 6 speed manual would get 22-25mpg.
@@chazlewis900 I will agree the 5.9CR is just reliable but fuel mileage is no comparison. I own an 06 5.9 six speed and 3.73 rear I only get 15 empty. My brother has a 97 12V 5 speed with 3.73 rear and he get 28 empty.
2:51 that 03 dually in the back tho
I wouldn't trade my 2005 Ram 3500 5.9L Cummins for love nor money. Still going strong. Service and replacement parts as needed. Almost 300k on the clock and still tows and pulls like the day I bought it.
The 2003-2007 actually does have egr. It has in cylinder EGR via the camshaft. The lobe separation anges are closer than on the pre 2003. 98degrees vs 106degrees I believe. Closes exhaust valve a little early to trap exhaust gas.
SlimJim,
Hopefully you will see this question... or anyone else who knows... tia for your reply.
Will an older design cam eliminate the IN CYLINDER EGR ???...
@@RJ-sr5dv Hey buddy. From my understanding, having the vp44 24 valve 98.5 to 2002 camshaft is the best stock camshaft cummins ever put into the 5.9. In short answer, yes, a cam upgrade will eliminate most if not all of the cylinder egr but it should be noted that cummins also had other variables in the mix to achieve in cylinder egr, and to be emissions compliant, such as the smaller turbine housings on the he341 and he351 turbochargers as well as different emissions friendly ecm programming and I'm sure that the piston bowl shapes, injector spray angles, injection events (which are different from 2003-2004.5 to 2005-2007) are a factor as well. If you do a cam swap, it should take care of most of it but I would do custom tuning too from a place that has tested the tunes on a dyno with that cam in a common rail engine and with close to the setup that you will have. Hope this helps brother!
Slim Jim --
Thanks for that detailed reply.. Very informative
I have a 5.9 12 valve 398000 miles pulling fairly strong yet and a 6.7 203000 pulling strong yet both start without hesitation in the cold Wisconsin winters. I love them both for there abilities and reliability. The best of both worlds.
2006 5.9 is a great platform for those who want great reliability and the ability to make great power without hurting the pockets; G56 manual trans is even more desirable.
or a 5.9 with an Allison conversion =)
@@JeremiahHartmanPhotography zf6 over both imo
@@jamessimpson4653 ZF is never a bad choice
Have had 3 3rd gen rams with 5.9s and 48REs. Great trucks. 1st one was all stock and beautiful. No complaints. 2nd one was 300k miles and I built it to the T and it made 749whp with room to go (didn’t want to blow up my 300k mile block) also took lots of trans work and the front end was poop. 3rd one just had a smarty touch, Intake, exhaust and mild trans build, good truck. I now have a 2021 6.7 and it absolutely destroys the 5.9s in power department. 6.7 deleted is 100% superior in my mind
Also need to take into account the transmission options available for both. 5.9 48re and g56 or 6.7 68rfe aisin and g56 the 48 is an awesome trans
And the mv5600
The only automatic transmission for me is the AISIN.
I love my 2004 HO 5.9 dually. I am the original owner and am considering the new 2019 HO 6.7 but my 5.9 is part of the family and has earned her keep.
My 1st 06 was so reliable and powerful I had to get another one, I have had 211 vehicles and the 06 dodge 2500 has by far been the best and most reliable
211? Fucking prove it
You’re full of it, 211 vehicles 😂😂😂 8 vehicles a year for 26 years or maybe 5 a year for 42 years😂😂😂what a ridiculous thing to say
I have 3 notes. 1: the term is destroking where they’re putting 5.9 cranks into 6.7 blocks. Resulting displacement is 394ci. 2: The vgt uses the same 60/86 compressor as the 04.5-07 5.9’s, and the same turbine wheel (I’ve measured many of them, they all fit in the same hole, but there’s a 3-4mm spread in inducer/exducer measurements), and the vgt itself is primarily there to facilitate ego by creating higher backpressure. 3: head gasket failures are principally due to incorrect injection timing. Basically to much timing for the fuelling puts the pressure spike too close in the wrong spot.
My preference is the 6.7 due to its ability to spool significantly larger turbos with ease.
12 valve for the win
Mechanical pump
We wanted something simple with no def so we bought a couple of 5.9’s ( 2-24 valves and 1- 12 value) and they have been great.
I'm very happy with my 08 6.7. Full delete, banks turbo and efi live tune. I went with a modest 100 hp increase. All the power I could dream of and 21 mpg on on long trips with cruise set at 70 with a 6 in lift and 37's. I've had no issues with it in the 3 years ive had it. I run Delvac and change the oil and filters every time I service my freightliner. Intervals are usually 4 to 5k.
Fairy tails on mpg again.
Wow, all that money spent to get the same or less MPG than my stock SO 6.7.
All that was already done when I bought it except the tune. I had a different tune put on it. Paid $18k for it. Previous owner was broke and needed it gone quick. Been driving it 6 years. Tires, belts, water pump, shocks and U-joints is all I've had to replace. Bought it cash. So yes I got a fantastic deal. If you need it I can back it up to your face throw a chain and yank the foot out of your mouth. Know what you are talking about before you run your suck!
5.9 sounds alot better then the 6.7 Cummins
When there stock with straight piped. But when you second gen swap the 6.7 it sounds like a deeper with the stationary turbo
I Emissions deleted my 6.7 runs a lot better. That the Grandaddy 5.9 is a beast. However both of them can't compete with the 12 valve!! 😍
Believe it or not the 6.7 L Cummins 24 valve is the newer version of the 5.924 valve valve
I own both a 2007, 5.9 and a 2018 6.7. Love them both. My 2018 is a manual and 2007 automatic. The 5.9 seems to pull better in ice and snow without the tires losing grip. The 2018 tends to over power and spin. The 5.9 had about the same fuel economy as my 6.7 driving from Alaska to Texas. With both pulling roughly 1300lbs of weight. I did delete my EGR and DEF and added some tunes to my 6.7. Which greatly increased my fuel economy and saved money not buying DEF fluid all the time. Now I hunt in my 5.9 and pull my ATV’s. My 6.7 I pull my 5th wheel on long highway trips.
Love my 05 3500, 5.9👍♥️🇺🇸
Have a 1993 D250 cummins, 180,000 miles in and still has cross hatching somehow. 20 mpg, 300 horsepower, it’s a dream to drive.
Honestly. I think all turbo Diesel engines are pretty amazing. They each have their flaws, but all can be made “bulletproof” without a whole lot of money. I have a 2011 F250 with the 6.7 diesel. I’ve done a few things to prevent failure and it’s been nothing but outstanding work truck and fast. I love the Cummins and duramax seem great too, Allison transmissions are always nice. But a lot comes down to maintenance. Diesel is a different beast. Myself, I like to drain my fuel filter every so often and replace them bout every 3 oil changes. Most people won’t and bad things happen
Cant rat on a well kept diesel of any breed
Why you drain it and change it so often?
@@braveheart2785 well. I believe I read that in a manual somewhere to change them every 15,000 miles, so 3 oil changes for me. I learned that for a Diesel engine the fuel system is a huge part, expensive, and the fuel pump and glow plugs rely on clean diesel for lubrication. And the fuel filters are cheap too. 1 fuel filter, 1 fuel filter/water separator.
I’m trying to make my (unmolested) 2001.5 5.9 H.O. 6 speed outlast me. No particulate trap. No DEF. Thumbs up for the video.
6.7 with vgt is in another league towing heavy, and the 6spd at with it makes it so much better than any 5.9 truck ever dreamed of being
The 6.7 doesn't "blow head gaskets", the owners do when they push drive pressure beyond the compressor map safe efficiency range, by running super duper cool race car tuner boxes to add 300 hp
Anyone who says otherwise has never used both, the 4x4 5.9 trucks in tow mode are screaming at 65mph, while the 6.7 truck can tow in 5th or 6th and run 80 loaded to the hilt at an easy rpm, although 5th is better for it obviously
The riced out trucks at the beginning were definitely comical
The 5.9 has no emissions garbage so it will always be called the more reliable engine, but the dpf has nothing to do with the engine being reliable or not, that's a totally separate emissions system..
They're both the best engines to have ever been put in a light duty truck and probably always will be...
It does not reduce reliability, it removes all reliability as 6.7 emission systems will fail. I own both, currently 1 6.7 (have owned 2) and 4 5.9 trucks. For driveability/street both being modded the 5.9 wins period. For pure power/torque (max hp pre-loading boost drag racing/tractor pulls or 800hp or less towing) 6.7 is king, there is no substitute for displacement.
That being said, you will spend 1-3k+ a year cleaning/replacing emission systems (that are proven to not reduce emissions in real world applications, reason they are used: invest/law require to buy/use) on a street legal 6.7 as you warranty does NOT cover these systems, read it.
Now if you make the 6.7 illegal for the street by removing the egr and dpf and def systems it is the superior power plant for max hp applications and just as reliable as the 5.9. If you want to understand why the current emission systems do not work, ie do not help the environment, they reduce power when in action thus you press the accelerator further down burning more fuel..... That is why 10-15 max mpg 6.7 towing, 16-21 mpg 5.9 towing both trucks making the same horsepower. Food for thought.
The F--yards in the government fail to recognize that when it comes to diesels, choking them with emissions crap results in higher fuel burns on bigger engines and ultimately MORE EMISSIONS...
you have the injector firing voltage backwards. We are working through this issue trying to run the more reliable 6.7 injector in a 5.9 truck running the 5.9 ecm. The 5.9 injectors fire at 18v and hold at 18v the 6.7 injectors fire at 24v and hold at 18v so we are getting a sluggish opening on the 6.7 injectors causing a rough start.
'02 24v with HO 5.9 engine and dreaded VP-44 pump. I did have the OEM pump give me problems at ~ 65K miles but it never quit. The dealer swapped it out under warranty and it cost me zilch! At 165K we're still running strong and I wouldn't trade this rig for anything new on the market. With Bosch RV injectors and a Quadzilla mileage chip I'm pulling around 320 HP and >600 FT lbs of torque. I can keep up with most anything on the road and get a steady 19 MPG (that's with 1000lbs of camper in the bed). I'll keep this one thanks!
5.9 is a more reliable engine, more fuel efficient, however the 6.7 pulls and works so much better! I’ve owned and worked both.. as a daily, I’ll take my 06 5.9, if I’ve gotta haul heavy weights and push a lotta wind I’ll take the 6.7 hands down.
5.9L is not more fuel efficient. I have gotten 23mpg from my 2016 6.7L unloaded many times and see 21 daily commute.
i like my 12 valve hands down did a swap.out last year from a 6.0 powestroke to the 12 valve with the p pump i love it so reliable and it sounds sooo good too
Had to stop the video could not look at those "trucks" anymore
Trailer Queens, spewing soot all over the place, giving Diesel a bad name! Kinda like gun ownership!!
The trucks shown are atrocious.
read your comment before seeing the video, scrolled through the video and saw them...... saved me 7 mins of my life. Thanks Jacob.
They are trucks
I thinks it's just the wheels that ruin it.everything else just makes it look clean. The only impractical things seem to be those goofy wheels
"03 3500 Laramie. Owned it since 07 and have modified it with many, many upgrades geared towards reliability (To many to mention). Can say with only 130K it is an Awesome truck. Solid as can be. Planning on another $20k of upgrades on power, trans and more suspension upgrades. Less expensive investment than one 15 years newer!. Great platform
Hands down the 5.9 I have an 07 with 445000 miles and all it’s had is a 2 clutches and 1 transmission and I use it daily for cross country towing
Yessir towing is the point of the cummins, people joke on my grandfathers 24 valve thats been passed down to me but i find it funny that these kids have tow mirrors on their trucks and ridiculouse rims and tires and they aint even using it for what its meant for. So what i cant roll coal, i can tow a damn church.
I've own Mopar since I started driving in mid 70's. Challengers, RR's, Fury's Chargers, trucks etc. I've been away from classic auto seen for awhile now / was looking for a project. I found an unmolested bone stock (except 35's and aftermarket radio), 97, 5.9 P-pump w/5sp with easy 222,000 miles no rust CA truck. From reading the comments... I think that I made a good choice.
Thanks for the upload.
5.9 is EMP-proof plus more MPG.
My bugout vehicle!
I just bought both lol got a 89 5.9 and love it all around I bought a 2012 brand new and love the power the 89 is stock the 6.7 is deleted and tuned and I have put over 200k on the 6.7 and pulled a lot of heavy heavy things and I don’t treat her nice and not a single break you must build the truck for the task your using it for to get the best truck
This video should be titled “The difference between 5.9 and 6.7 Cummins”.
I have my 5.9 24v, for 14 years, only had to change the water pump, belt tensioner , fly wheel sensor, clutch and belt few times. Now is in his 494,000 km, at is still purring like kitten. With Lucas oil, engine running more quite!
This video gives me heartburn 😂
Thanks, great comparison. Myself I prefer the 5.9 for reliability, and better fuel economy in general. My 2002 LB/4X4/4 door was getting about 24 MPG with full cab and bed (not towing).
If im nice I can get about 21-23mpg in my 5.9 megacab 4x4 dually
Also you have to take into consideration of the ho second gen they’re kinda rare but mine has 535000 miles on it and only been through 2 fuel. Pumps 1 starter and 1 turbo but if you’ve ever been in the ho second it’s a totally different animal
2002 Dodge Ram 5.9 Cummins 285675 miles still going strong only mods I've made are 5 stage comp chip , cold air intake , 4 inch exhaust & fass fuel pump system ! Most reliable motor I've ever had ! Bought truck new ! Can't speak for the 6.7 as I've never owned one or drove one !
I've owned all three models of the engine and understand each was a well thought out natural evolution of the prior ones. My 12 valve had 400K on it when I sold it and its running around yet today. My 24 valve 5.9 was just as dependable but suffered from poor quality components such as step pump and water dispersal system. My 6.7 has ran flawlessly for 188K with only minor issues with the TIPM. Cummins is in a different league than the competition so any comparison is pointless.
Problem is, everyone is on the delete train. You don't need to delete the emissions systems.... Then, when they have problems with their engine, they suprised pikachu and blame it on the emissions system, creating a false narrative. The engine was designed to run with the equipment it has. Not run with a S400 turbo, deleted egr system, dpf, and 200 HP injection map in the ECM.
I have a modified 6.7 and two stock 12 valves. I have not drove a truck that makes more power then my 6.7, but it was very expensive to buy and build. Both 12 valve trucks are very reliable other then transmission issues. I don't think you could build a 5.9 to a 6.7 potental, but the 5.9 is a very reliable engine, especially the 12 valve. The second gen 24 valve VP44 5.9 engines make good power but suffer fuel pump issues (they can be fixed though). The third gen 5.9 common rail engines make good power, they are reliable, and they can be built to make awsome power. They can give a 6.7 a really good run for its money, but when comparing apples to apples the 6.7 will out pull the 5.9.
Jeremy Smith what if you just want a daily driver and towing a max of 14,000 lbs a few times a year and go off-road a few times a month? Please tell me 12v 5.9 lol
I own 95 12 valve 5.9 stick
Also own 08 6.7 450 auto deleted
My fav is the 5.9 virtually bulletproof ... although having great issues maintaining the body
I pull 29000 pounds with my 6.7. Turned my 5.9 into an overland rig. Love them both.
Just went over 310000 miles on my 97 12 valve still running like new
what all have you had to do to to the engine, tranny, and truck get those miles? I've got an 06 5.9 with only 143,000 miles. When will I need to replace serious parts before it's not worth keeping the truck?
@@kaylatuttle9988 transmission at about 220000 the rear end at 190000 the driveline is original the engine has never had the head or pan off I replaced the injectors at about 300000 and the water pump even though there was nothing wrong with them 1 alternator 1 fan hub
Have a 1991 D350 with the 5.9 12 valve. Purchased new on Halloween Day in 1990. Now has 486,000 miles and still going strong. Replaced the water pump, alternator, starter at 400,012 miles. Nothing else has been touched on the engine. Still gets around 22 miles a gallon unloaded and about 16 mpg pulling gooseneck with 580 Case backhoe. Not a speed demon but gets the job done. Also have a 2007 3500 with the 6.7. I've constantly had wiring harness problems, and injector problems, head gasket replacement and other items throughout the truck with only 125,000 miles. It's a great truck when it runs but not trustworthy so I'll stick with the 5.9 12 valve.
How I see it both are good but Fall into different categories the 5.9 for towing /traveling the 6.7 drag strip racing and messing around but at the same time both can do the two things 🤷♂️ just my opinion
I have a '93 D250 with a bone stock 5.9 12v and the 5-speed Getrag tranny. I've owned it for 12 years and it just turned 200k miles. I've never done anything to the engine but change the oil, oil filter and fuel filter, flush the coolant and adjust the valves. I'm now thinking of bumping up the power a little, but I don't want to get to the point where I need to change the clutch out or overpower the rest of the drivetrain. I just want to be able to keep a little more speed while climbing grades with my truck camper and towing my car. I'm searching for a video that explains in detail the process of turning up the fuel screw, adding a custom fuel pin and different governor spring. I've worked on my own vehicles for 50 years, but have never done anything like this to a diesel. And I've read of some others trying this but ending up with an engine that runs worse than before. Trying to decide if I need to take it to a diesel mechanic instead. Can anyone recommend a good video explaining the process?
I love my 93 dodge d350 5.9L v12 Cummins
I have had both and I do have to say the 6.7 definitely has a lot more power but mine did blow the head gasket and injectors. To where my 5.9 hasn’t had those problems. But my 5.9 did need a transmission rebuilt and the 6.7 didn’t. So it’s really a toss up. I do know that you can tweak the 5.9 motor to add more power really easily. But it just depends on how much you want to spend. I believe both are great motors
5.9 beat motor ever for pick ups bomb proof enough power for what ya need no need to be doing 80 hauling 25k but the best thing I like about them especially the old 24v's an 12v's is that old school rig sound cannot beat it
Vgt is used to create higher exhaust pressure to get exhaust gas past the egr value into a boosting situation. The benefit is less turbo lag
I love my 5.9, it’s a beautiful motor. Does everything I ask of it. Maybe when I trade her in I’ll think about the 6.7 but honestly I plan on finding my same truck just with less miles.
Good luck
I had a 1996 12 valve and have a 2004 common rail. Both awesome engines. For reliably I choose a 5.9. But I would be just as happy with a 6.7.
I vote for my 98 12 valve with a swapped in 6 speed manual,reliable, makes decent power ( not much done besides fuel plate) and gets great fuel economy
Oh an I almost forgot P pump baby!!!
1966cambo Yep, that’s the best combination ever in the dodge. I’ve got a 2001 with the six speed, almost rebuilt it to a p-pump 24 valve, but thought why not just get a 12 valve.
I my friends have 3 Rams with the Cummins to this day. Never sold one yet.
2004.5 48re - 2005 NV5600 - 2014 Aisin
You are a smart man, I have 880k on my 2006 And love it
Man!!! 880k?? Any work been done?
I have three also 2000 dually 2wd 170000 2004 dually 4wd 140000 nv5600 and 2017 dually 4wd 30000 and it’s sold guy is coming to pick it up in about 2weeks epa has ruined everything!!
12v 5.9 pretty bulletproof
Very good information, would like to see more about these engines, I have owned both for over 15 years and worked both. My 03 was a beast and very reliable pulled great, the 5.9 pulls great but can not compare to the power of the 6.7 that I own now, both great engines, Cummins for life.
5.9 cummins not as computerized
I basically bypassed all the computer controls on mine
I have a 97 5.9 12v auto and I gotta say the ugly B is completely bullet proof. The owner before didn't take great care of the body but the motor is pretty great for the miles it has. Right now I have to work on the suspension and possibly a frontend rebuild. 230k miles and counting.
How is EGR an advancement?
It’s not. It is only an advancement from a cleaner air standpoint
I'm sticking with my manual 03 3500. No DEF and no added emissions junk to fail. Keeping it simple and it doesn't smoke.
I own both. '03 5.9L 6 speed manual and '13 6.7L full delete. I loved my 5.9L so much.. almost 500K on it. But man! that 6.7L hauls!!! As much as I like driving standard, the 6.7L with aisin is the best truck I've ever driving. It Feels like 50% of power increase, easy. Both engines have been exceptionally reliable. But still cant wait to go electric...
Bought a Ram 99 CTD new, in dec 99. Put 241,000 miles on it in 5.5 years. Engine was solid, lift pumps...not so much lol I think I went thru 4 of them. Also spring a shaft leak on the VP-44 ...I attributed that to my switching between hi and lo sulfur diesel fuel a lot (yes, I ran off road 3,000 ppm sulfur in it as well as on road 500 ppm - and sometimes BP Diesel Supreme which touted 50 ppm sulfur) So I think this up and down sulfur content caused the shaft gasket to deform giving me a fuel leak into the crankcase. Luckily I bought it early and did no internal damage. The CTD 5.9 24-valve Was a great engine.