Thanks for the vid. 5:30 was what I was most interested in because I want to put it behind a 4r100 so I can’t break torque on the shift like you can using the clutch.
I heard 2 old timers talkin about this auxiliary box in the store the other day. This is really neat. I drive truck everyday and pulling 80k you find yourself needin closer shift gears. Really amazed on what a difference this makes. Truck always stayed in its sweet spot C'mon. Gotta love it. Bitchin truck by the way.
Awesome video. I've been contemplating on geting a GV unit. I have a 94 Chevy K2500 with the 6.5 NV4500 and 4.10s and at 2600rpm I'm cooking a whopping 73mph on the interstate. Seeing this makes me want to order one tonight lol. I love driving the truck, plenty of power when pulling with 4.10s but it needs lower rpm on the interstate lol.
I have the same trans and gear ratio, only behind a Cummins 12 valve. I love the gear vendors. I put a simple switch on the gear shifter and it's super useful and satisfying bringing the RPM down to the MPG sweet spot 1700-1800. If you can afford it, buy it.
I will most likely be selling this GV unit here pretty soon. Im currently putting the truck back to stock, form as my 3.55 gears and how I use my truck, makes the GV seldom used anymore. I've strongly considered putting in 4.11 gears, but that is like $2,000 to gear change the front axle and the rear axle. Had my truck came with 4.11 gears, the GV unit wouldn't be going anywhere
@@CumminsDsl93 I have not sold it yet. I brought it to WV with me, while on vacation A guy from the next state over had wanted to buy it, and didn't want to drive to Texas, where i was at. I haven't heard from him, in a bit. His messenger went inactive. So it's still for sale
I have one in a 85' Ford 6.9 , ATS Turbo with a C6. I find that the C6 is in top gear at about 30 and then I will use the OD only if I am getting on a road cruising 55+. I run 4.10's and they are great around town but the OD turns it to a 3.22 on the highway. It would be nicer in a manual I think but really mandatory on 4.10's either way.
Reading through these comments. My poor truck (even with 295-70r17’s) only does 73 at 2k rpms. This is starting to sound more and more like something I should buy. 6spd and 4.10 gearing. 😅
I need to get one of those big time I have a 95 Dodge ram 3500 with the nv 4500 5 speed and i’m literally tacked out matted to the floor right up against the governor at about 78 flat out 52 miles an hour is about max cruse speed just so I’m not ringing it out. I would be happier than a pig in shit if I could cruise down the road at 65 or 70 comfortably. The only good thing about the gearing I have now is I can pull lots of weight and still get killer fuel mileage. which I’m sure that will change once I start loading the ol 12 valve with a taller gear. but that’s cool at least I’ll still have that option to use over drive or not 🤪👍
Your situation, you will absolutely see a real world increase in fuel mileage. 1750-1800rpm is the sweet spot to hit mid 22-24mpgs on the one highway. You will literally have the best of both worlds. 4.10 axle ratio, with nv4500 AWD gear vendors. You cant ask for a better setup. You will.cruise at 70-80, as of you had 3.55 gears. But down low, you will have the torque monster of 4.10z
man thank you i did not think but yes turbo lower compression engine vs my old 7.3l idi non turbo was week asf but at 900 rpm would pull darn nere the same as at say 2500 21.5:1 compression it would cluck at 80mph heck now o wont to build one with a moose pump i miss it need a turbo a 19:1 compression or so and regrind anti-smog timing cam fix bla bla to get towing usefull past 5000lbs-6000lbs
Man 20 mph ... At the same RPM as standard 5th at 70 it was 1,600 RPM with 5 over I have a 69 f 250 3spd auto it seems alot more useful with a manual than a automatic trans say a older 4spd manual , I'm a trucker it seems very similar to a 13 spd or a fuller super 10
Nice video. How has the Gear Vendors held up? Do you haul any weight with it regularly? I have the same truck with the 6-speed, 3.55’s, and the same tires. Plenty of legs as is, but the split between gears is too much for hauling loads since I replaced the 16’s with the 17’s. Looking for a splitter, and it seems the GV is about the only solution without adapting a full-size truck transmission.
@@tambs575 yer welcome! I was being serious. Who ever was the shithead that said ooooh 17" rims look good! Needs to be slapped till they change their mind.
Just in case you missed the inference, the gratitude I expressed earlier was dripping with sarcasm. The wholly irrelevant and completely meaningless opinion you expressed about wheel size preference was a complete waste of your time. I’ve no doubt you have opinions on things I think are stupid, and clearly the opposite is true. That doesn’t mean your opinion is relevant. Especially to the question I asked. So do everyone a favor and keep the drivel spewing out of your pie-hole to yourself.
I have a 2000 GMC Savana 1500 Van, 5.7L 350ci Gas V8, with 3.73 gearing in the back, from 60-80mph i get 13mpg. I wonder if a gearvendor would be worth it for better mileage, and less transmission/engine stress
I have 2006 ram 3500 with 6 speed manual and im interested in a gearvendor. Did you order from the website direct? did you do the install? how long did it take for the install and is it worth the expense. Im running 373 gears and have even found myself trying to shift into 7th gear. thanks again. nice setup. where are you located?
@@superdutyzack Thanks Zack. From 18 mpg to 21.5 mpg is nice especially if drive long distances, or have a fleet of these trucks Best Wishes & Blessings. Keith Noneya
Add a switch behind the clutch pedal that acts as the “off” button, so when you shift it auto goes to 3rd from 2/o. Sounds pretty awesome to bang those gears
Your fuel mileage increase depends on where you started from. My truck, with 3.55 gears, cruises 70 at darn near the sweet spot for mileage, so no benefit on mileage. If you have 4.10 gears, then yes, you will absolutely see a strong improvement in fuel mileage
As far as power and torque, yes...a big difference. It allows the engine to stay in the sweet spot the e tire time....say 1800rpm to 2200rpm. So yes, absolutely makes a big difference. Without the unit, I hated towing my camper....any kind of hill.at all...I had to do 55-60mph in 4th gear, or 75mph in 5th gear. Now....I can catch 4th over, and tow 65-70 all day.
I could be mistaken but it sounded like you missed 1st over and 2nd over. I'm watching your gear changes and I thought I hear you go straight from 1st to 2nd.
That is correct. GearVendors oil pump is driven off the driveshaft speed. It needs 25mph speed, in order to shift firmly without unnecessary slippage. So...gearVendors controller monitors your wheel speed, and wont allow a shift under 25mph, or...when slowing doen..it automatically disengages the unit at 25. I say 25mph..it may be 20mph. Not sure. Concept I'd the same
So just to clarify, you can't split 2nd with the gear vendors becuase you don't have enough driveshaft speed? I have a 93 W350 with the 360 5 speed but I'm thinking of going with an NV4500 and this has my interest as well. The only issue I have is the drop between 2nd and 3rd can be a bit annoying when you have 10k lbs behind you. I guess realistically I could just swap out to 4.88s and then use this to split the higher gears and drop down to a 3.80 more less in 5th with the over if I'm making sense of this correctly.
Sounds like you need the lower gear ratio, or a more powerful motor. Your 360 sounds to be struggling pretty hard, if the 2-3 shift is causing you issues.
@@WilliamStewart1 your getrag and nv4500, have similar gear ratios. 2-3rd shift, towing 10,000lbs, shouldn't leave any kind of after thoughts. Up your power a little. Even towing my 10,000lb camper up West Virginia mountains, 2-3rd shift is a non-issue. My truck is roughly 100hp over stock.
It's just a toggle button, mounted by the shifter ball. So you thumb flip it, while the clutch is in. It's a small toggle switch, with a clean mount that clamps onto the shifter pole. Small and clean enough, someone riding passanger wouldnt notice you switching it on/off
From what I've seen, the controller has an automatic mode. When you leave this on, does it shift out of overdrive when RPMs drop during upshift in automatic mode? Just curious, cause that would be really nice. I really need to get one of these.
My understanding, with automatic trans. You dont get to split every gear like in the video. With an auto trans, it only kicks in as your final over drive. But yes, my understanding...it is full auto engage/disengage. Turn it.on and dont fuck with it anymore. Where worth the manual trans, you toggle it like a truck driver shifting thru a 10spd.
michael barnhill No the automatic can be used in manual mode or automatic mode like you mentioned. So you use a footswitch to shift a 3 speed for 6 gears total.
Just curious, how's your GV holding up? I just bought one second hand because I can't swallow the $3,500 price tag plus a custom driveshaft and install 😅
@@obijuankenobi420still sitting in my garage. Haven't gotten around to it. Been debating other options, but sadly with fuel prices my truck doesn't get driven as often as I'd like. The unit itself is in good shape though.
@@obijuankenobi420 diesel or gas? You'll get better fuel economy in the diesel, you could also pretty easily convert the diesel to supplemental CNG and spend much less on fuel.
@@Akya2120 Can't afford the new duramax tahoes so it would have to be a 1994.....I don't like the interior in a 94 tahoe....im in a predicament....tell me more about supplemental....youre talking about making my own diesel fuel ?
There is videos all over youtube showing various installs. It install practically the same across the board. So it will look the same under the truck, as under any other application
This video covers exactly what you asked for. Shifting into all gears, both with and without the clutch. As far as the other comment, about not shifting below 40....that is absolutely retarded. GearVendors specs to not engage under 20mph, as the driveshaft roatiation speed powers the hydraulic pump inside the GV.
@@michaelbarnhill2685 and also not being in OD while using compression braking or an exhaust brake, the cone style OD holds power really well but not while slowing down and if you do it will tear up the friction material.
@@harlandixon3453 why would anyone be engine breaking in overdrive in the first place? You are correct, when engine/exhaust breaking....you turn the overdrive unit off.
No, 5th over with 3.55gears puts me doing at a minimum of 85mph. Any less, and you are lugging. Now....on flat ground, 5th over at 65-70, it is whisper quiet, and you can drive at that low....but only on flat... I would guess it puts you around 1400rpm. I'm way to observant of my equipment, to force it to try and work at 1400rpm, which below its proper operating rprm.
@@michaelbarnhill2685 ok. Thanks. I’m thinking about one and was hoping 5th over would work in loaded. It would mainly be for towing though 4th over to save the 5th gear nut and 3rd over to help with the wide spread of 4th. The 12 valve makes it’s power a little lower and is happiest below 2k. It can do 1300 in 5th and be happy gets it’s best millage around there. but adding more gear might be a different story. Where I live speed limits are no higher then 90 which is like 55. We do about. 65-70. Thanks a lot.
@@chevy6794 12v's are happiest between 1800-2200rpm. Anything below.1500 rpm, and you are lugging the engine. They idle around 800rpm,, and redline at 3,000. That puts your usable rpm range between 1500-2500rpm. And your most efficient rpm range, at 1800-2200rpm. You, as the driver, are happiest below 2,000rpm...because the engine and trans is loud as hell once you get over 2,000rpm. Your subconscious is cringing inside, at how loud the engine is, and its telling you to shift waaaay sooner than the engine/transmission actually want to be operated at.
GearVendors has no business behind a diesel truck that is used as a daily driver. They can say what they want, I replaced my unit multiple times and it simply couldn't hold up. GV's belongs behind weekend toys, not daily drivers. Eventually sold the entire setup for like $1,000. As far as 5spd , 6spd or auto.. That answer really depends on your goal, and what you are starting with. I eventually converted my 5spd to a built auto. Love not having to push a clutch pedal anymore.
Not very sure but It might be that 4h is higher than 5L so there is some practicality maybe skip that or go 4L to 5L then go up to 4H back to 5H maybe I might be wrong
4th over turns at a slightly higher rpm than 5th. I believe it is 100rpm difference. So 4th over tows better than 5th, but just barely. I sold the GVendors, and went to a larger injector(+200s)/turbo setup(Fenley drop-in hx35).... Truck towed and drove drastically better. Could tow in 5th gear, uphill, at 65mph, and not needing to downshift.
Dont engine/exhaust brake with the overdrive unit engaged. Normal driving up/down hill, its just another gear. Disengage unit prior to engaging exhaust brake. Overdrive not engaged, you treat the truck like normal. To me. The downhill concerns are unwarranted..because you are not going to be going downhill trying to engine break while in overdrive..you willl always be downshifting if you ate trying to slow down
Sold it. Will never buy another one. They are cool, for weekend driven hot rod cars. They have no business in a daily driven diesel truck. They shouldn't even advertise them for them.
Thanks for the vid. 5:30 was what I was most interested in because I want to put it behind a 4r100 so I can’t break torque on the shift like you can using the clutch.
Very helpful and informative video. Thanks for making this!
I heard 2 old timers talkin about this auxiliary box in the store the other day. This is really neat. I
drive truck everyday and pulling 80k you find yourself needin closer shift gears. Really amazed on what a difference this makes. Truck always stayed in its sweet spot C'mon. Gotta love it.
Bitchin truck by the way.
This reminds me of the 85 corvette 4x3 transmission
Awesome video. I've been contemplating on geting a GV unit. I have a 94 Chevy K2500 with the 6.5 NV4500 and 4.10s and at 2600rpm I'm cooking a whopping 73mph on the interstate. Seeing this makes me want to order one tonight lol. I love driving the truck, plenty of power when pulling with 4.10s but it needs lower rpm on the interstate lol.
I have the same trans and gear ratio, only behind a Cummins 12 valve. I love the gear vendors. I put a simple switch on the gear shifter and it's super useful and satisfying bringing the RPM down to the MPG sweet spot 1700-1800. If you can afford it, buy it.
At first I thought, 2600 ain't that bad. But then I saw it's a diesel so yeah that's a bit much. Did you get the GV unit after all? Did it work out?
I will most likely be selling this GV unit here pretty soon.
Im currently putting the truck back to stock, form as my 3.55 gears and how I use my truck, makes the GV seldom used anymore.
I've strongly considered putting in 4.11 gears, but that is like $2,000 to gear change the front axle and the rear axle.
Had my truck came with 4.11 gears, the GV unit wouldn't be going anywhere
@@michaelbarnhill2685 hey buddy. Thanks for the video! Have you sold it?
@@CumminsDsl93 I have not sold it yet.
I brought it to WV with me, while on vacation
A guy from the next state over had wanted to buy it, and didn't want to drive to Texas, where i was at.
I haven't heard from him, in a bit. His messenger went inactive.
So it's still for sale
I have GOT to get one
very impressive results
I have one in a 85' Ford 6.9 , ATS Turbo with a C6. I find that the C6 is in top gear at about 30 and then I will use the OD only if I am getting on a road cruising 55+. I run 4.10's and they are great around town but the OD turns it to a 3.22 on the highway. It would be nicer in a manual I think but really mandatory on 4.10's either way.
Thanks, I have a G56 and im concerned about the little split between 4o and 5th. Also, i tow a lot will it handle the heat?
Reading through these comments. My poor truck (even with 295-70r17’s) only does 73 at 2k rpms. This is starting to sound more and more like something I should buy. 6spd and 4.10 gearing. 😅
I need to get one of those big time I have a 95 Dodge ram 3500 with the nv 4500 5 speed and i’m literally tacked out matted to the floor right up against the governor at about 78 flat out 52 miles an hour is about max cruse speed just so I’m not ringing it out. I would be happier than a pig in shit if I could cruise down the road at 65 or 70 comfortably. The only good thing about the gearing I have now is I can pull lots of weight and still get killer fuel mileage. which I’m sure that will change once I start loading the ol 12 valve with a taller gear. but that’s cool at least I’ll still have that option to use over drive or not 🤪👍
Your situation, you will absolutely see a real world increase in fuel mileage. 1750-1800rpm is the sweet spot to hit mid 22-24mpgs on the one highway.
You will literally have the best of both worlds.
4.10 axle ratio, with nv4500 AWD gear vendors.
You cant ask for a better setup.
You will.cruise at 70-80, as of you had 3.55 gears.
But down low, you will have the torque monster of 4.10z
man thank you i did not think but yes turbo lower compression engine vs my old 7.3l idi non turbo was week asf but at 900 rpm would pull darn nere the same as at say 2500 21.5:1 compression it would cluck at 80mph heck now o wont to build one with a moose pump i miss it need a turbo a 19:1 compression or so and regrind anti-smog timing cam fix bla bla to get towing usefull past 5000lbs-6000lbs
Oh wow. I want this
Man 20 mph ... At the same RPM as standard 5th at 70 it was 1,600 RPM with 5 over I have a 69 f 250 3spd auto it seems alot more useful with a manual than a automatic trans say a older 4spd manual , I'm a trucker it seems very similar to a 13 spd or a fuller super 10
That's where I want to be @80...right where it's happiest
Nice video. How has the Gear Vendors held up? Do you haul any weight with it regularly? I have the same truck with the 6-speed, 3.55’s, and the same tires. Plenty of legs as is, but the split between gears is too much for hauling loads since I replaced the 16’s with the 17’s. Looking for a splitter, and it seems the GV is about the only solution without adapting a full-size truck transmission.
Go back to 16 anything bigger looks like trash.
Amazingly helpful advice! Thank you sooo much! 🙄
@@tambs575 yer welcome! I was being serious. Who ever was the shithead that said ooooh 17" rims look good! Needs to be slapped till they change their mind.
Just in case you missed the inference, the gratitude I expressed earlier was dripping with sarcasm. The wholly irrelevant and completely meaningless opinion you expressed about wheel size preference was a complete waste of your time. I’ve no doubt you have opinions on things I think are stupid, and clearly the opposite is true. That doesn’t mean your opinion is relevant. Especially to the question I asked. So do everyone a favor and keep the drivel spewing out of your pie-hole to yourself.
I have a 2000 GMC Savana 1500 Van, 5.7L 350ci Gas V8, with 3.73 gearing in the back, from 60-80mph i get 13mpg. I wonder if a gearvendor would be worth it for better mileage, and less transmission/engine stress
Great vidya
I have 2006 ram 3500 with 6 speed manual and im interested in a gearvendor. Did you order from the website direct? did you do the install? how long did it take for the install and is it worth the expense. Im running 373 gears and have even found myself trying to shift into 7th gear. thanks again. nice setup. where are you located?
I'm interested in doing the same exact thing for my 06 Ram 6 speed.
I'm thinking either do the GV or a 10speed conversion but I think the 10 speed would need custom gearing.
The higher gear ratio the less the split...3.55 doesn't seem like it helps much but if you switched to something 4.30+ ...that might be cool!
So what kind of mileage increase did you get using this on the highway now? Thanks for sharing. Best Wishes and Blessings. Keith Noneya
You can expect to see a 20% increase.
@@superdutyzack Thanks Zack. From 18 mpg to 21.5 mpg is nice especially if drive long distances, or have a fleet of these trucks Best Wishes & Blessings. Keith Noneya
Like to put one of these behind my SM 465.
Add a switch behind the clutch pedal that acts as the “off” button, so when you shift it auto goes to 3rd from 2/o. Sounds pretty awesome to bang those gears
Hows you fuel mileage with the gear vendor? And how's your power and torque? I've heard it's all supposed to increase a bit.
Your fuel mileage increase depends on where you started from. My truck, with 3.55 gears, cruises 70 at darn near the sweet spot for mileage, so no benefit on mileage. If you have 4.10 gears, then yes, you will absolutely see a strong improvement in fuel mileage
As far as power and torque, yes...a big difference. It allows the engine to stay in the sweet spot the e tire time....say 1800rpm to 2200rpm.
So yes, absolutely makes a big difference. Without the unit, I hated towing my camper....any kind of hill.at all...I had to do 55-60mph in 4th gear, or 75mph in 5th gear. Now....I can catch 4th over, and tow 65-70 all day.
Okay thank you very much I appreciate it and awesome video!
I could be mistaken but it sounded like you missed 1st over and 2nd over. I'm watching your gear changes and I thought I hear you go straight from 1st to 2nd.
That is correct. GearVendors oil pump is driven off the driveshaft speed.
It needs 25mph speed, in order to shift firmly without unnecessary slippage.
So...gearVendors controller monitors your wheel speed, and wont allow a shift under 25mph, or...when slowing doen..it automatically disengages the unit at 25.
I say 25mph..it may be 20mph. Not sure. Concept I'd the same
So just to clarify, you can't split 2nd with the gear vendors becuase you don't have enough driveshaft speed? I have a 93 W350 with the 360 5 speed but I'm thinking of going with an NV4500 and this has my interest as well. The only issue I have is the drop between 2nd and 3rd can be a bit annoying when you have 10k lbs behind you. I guess realistically I could just swap out to 4.88s and then use this to split the higher gears and drop down to a 3.80 more less in 5th with the over if I'm making sense of this correctly.
Sounds like you need the lower gear ratio, or a more powerful motor.
Your 360 sounds to be struggling pretty hard, if the 2-3 shift is causing you issues.
@@michaelbarnhill2685 I meant Getrag 360 5 speed, it's got a bone stock 12v under the hood.
@@WilliamStewart1 your getrag and nv4500, have similar gear ratios.
2-3rd shift, towing 10,000lbs, shouldn't leave any kind of after thoughts.
Up your power a little.
Even towing my 10,000lb camper up West Virginia mountains, 2-3rd shift is a non-issue.
My truck is roughly 100hp over stock.
I just ordered a gv unit for my 97 ram 3500 and would like to see the install from under the truck
I am planing on doing myself
Update?
Can you please make a video of how the shifting of the unit works? Is it a button?
It's just a toggle button, mounted by the shifter ball.
So you thumb flip it, while the clutch is in.
It's a small toggle switch, with a clean mount that clamps onto the shifter pole.
Small and clean enough, someone riding passanger wouldnt notice you switching it on/off
From what I've seen, the controller has an automatic mode. When you leave this on, does it shift out of overdrive when RPMs drop during upshift in automatic mode? Just curious, cause that would be really nice. I really need to get one of these.
My understanding, with automatic trans. You dont get to split every gear like in the video.
With an auto trans, it only kicks in as your final over drive.
But yes, my understanding...it is full auto engage/disengage.
Turn it.on and dont fuck with it anymore.
Where worth the manual trans, you toggle it like a truck driver shifting thru a 10spd.
michael barnhill No the automatic can be used in manual mode or automatic mode like you mentioned.
So you use a footswitch to shift a 3 speed for 6 gears total.
Do you push the clutch to go between a gear and its overdrive? Like going from 4 to 4-over?
Yes, that is correct. Clutch to engage/disengage.
Its not a 'requirement'...but it a seamless in/out shift when using the clutch
Omg wish mine did 70 at 1600rpm do you think the gear vendor would work for the 47re?
yes they make one for that trans
Just curious, how's your GV holding up? I just bought one second hand because I can't swallow the $3,500 price tag plus a custom driveshaft and install 😅
Update?
@@obijuankenobi420still sitting in my garage. Haven't gotten around to it. Been debating other options, but sadly with fuel prices my truck doesn't get driven as often as I'd like. The unit itself is in good shape though.
@@Akya2120 Tell me about it 😅 .... I want to buy a used Tahoe so I've been researching any possible way to increase the MPGs.
@@obijuankenobi420 diesel or gas? You'll get better fuel economy in the diesel, you could also pretty easily convert the diesel to supplemental CNG and spend much less on fuel.
@@Akya2120 Can't afford the new duramax tahoes so it would have to be a 1994.....I don't like the interior in a 94 tahoe....im in a predicament....tell me more about supplemental....youre talking about making my own diesel fuel ?
Can you show how it’s mount up under the truck.
There is videos all over youtube showing various installs.
It install practically the same across the board. So it will look the same under the truck, as under any other application
You should do a video shifting 1, 2, 2od, 3, 3od, 4, 4od, 5od
B&L Enterprise I have the same set up in the same truck and you don’t want to be going under 40 and use the splitter
This video covers exactly what you asked for.
Shifting into all gears, both with and without the clutch.
As far as the other comment, about not shifting below 40....that is absolutely retarded.
GearVendors specs to not engage under 20mph, as the driveshaft roatiation speed powers the hydraulic pump inside the GV.
@@michaelbarnhill2685 and also not being in OD while using compression braking or an exhaust brake, the cone style OD holds power really well but not while slowing down and if you do it will tear up the friction material.
@@harlandixon3453 why would anyone be engine breaking in overdrive in the first place?
You are correct, when engine/exhaust breaking....you turn the overdrive unit off.
Because they may not know any better, It is not like the overdrive comes with much of a users manual. But I love mine, no complaints so far.
I have the same setup with a 12 valve. It’s best millage is under 2k. Does it work good at 65 5 over?
No, 5th over with 3.55gears puts me doing at a minimum of 85mph.
Any less, and you are lugging.
Now....on flat ground, 5th over at 65-70, it is whisper quiet, and you can drive at that low....but only on flat...
I would guess it puts you around 1400rpm.
I'm way to observant of my equipment, to force it to try and work at 1400rpm, which below its proper operating rprm.
@@michaelbarnhill2685 ok. Thanks. I’m thinking about one and was hoping 5th over would work in loaded. It would mainly be for towing though 4th over to save the 5th gear nut and 3rd over to help with the wide spread of 4th. The 12 valve makes it’s power a little lower and is happiest below 2k. It can do 1300 in 5th and be happy gets it’s best millage around there. but adding more gear might be a different story. Where I live speed limits are no higher then 90 which is like 55. We do about. 65-70. Thanks a lot.
@@chevy6794 12v's are happiest between 1800-2200rpm.
Anything below.1500 rpm, and you are lugging the engine.
They idle around 800rpm,, and redline at 3,000.
That puts your usable rpm range between 1500-2500rpm.
And your most efficient rpm range, at 1800-2200rpm.
You, as the driver, are happiest below 2,000rpm...because the engine and trans is loud as hell once you get over 2,000rpm.
Your subconscious is cringing inside, at how loud the engine is, and its telling you to shift waaaay sooner than the engine/transmission actually want to be operated at.
@@michaelbarnhill2685 fair enough.
Did you ever have any problems with it and would you recommend this other than just putting a 6 speed?
GearVendors has no business behind a diesel truck that is used as a daily driver.
They can say what they want, I replaced my unit multiple times and it simply couldn't hold up.
GV's belongs behind weekend toys, not daily drivers.
Eventually sold the entire setup for like $1,000.
As far as 5spd , 6spd or auto..
That answer really depends on your goal, and what you are starting with.
I eventually converted my 5spd to a built auto.
Love not having to push a clutch pedal anymore.
@@michaelbarnhill2685 my goal is to get rid of the big gap between 3rd and 4th I use the truck to tow
@@michaelbarnhill2685my goal is to get rid of the huge gap between 3rd in 4th I use the truck to tow it is Currently a nv4500
5 speed? Thought those had the NV5600 6 speed?
you could get both, the nv5600 had the high out put (245hp) engine
Not very sure but It might be that 4h is higher than 5L so there is some practicality maybe skip that or go 4L to 5L then go up to 4H back to 5H maybe I might be wrong
4th over turns at a slightly higher rpm than 5th.
I believe it is 100rpm difference.
So 4th over tows better than 5th, but just barely.
I sold the GVendors, and went to a larger injector(+200s)/turbo setup(Fenley drop-in hx35)....
Truck towed and drove drastically better. Could tow in 5th gear, uphill, at 65mph, and not needing to downshift.
I wonder if a two speed rear would be about the same but cost less....
Idk.
I wouldn't recommend anyone buy one of these for a diesel. They simply don't hold up.
Who makes the unit and were can I get it?
Thomas Bornn gear vendors.com
Did you need to get a different driveshaft?
Just put one in my truck today, yes you need to get your drive shaft shortened
You ever end up selling the gv unit?
Could you put the link for this somewhere?
The link for what?
Do you have to disengage it down hills?
Dont engine/exhaust brake with the overdrive unit engaged.
Normal driving up/down hill, its just another gear. Disengage unit prior to engaging exhaust brake.
Overdrive not engaged, you treat the truck like normal.
To me. The downhill concerns are unwarranted..because you are not going to be going downhill trying to engine break while in overdrive..you willl always be downshifting if you ate trying to slow down
@@michaelbarnhill2685 Thanks, these units are really interesting, Seem to work great on 700R4's like I have in my truck.
How it holding up so far?
Sold it.
Will never buy another one. They are cool, for weekend driven hot rod cars.
They have no business in a daily driven diesel truck.
They shouldn't even advertise them for them.
@michaelbarnhill2685 what ended up happening?
Yea, would like to know what issues you’ve had with it
That cummins didnt seem to have much power