LOW $ JUNKYARD 4.8L TURBO-ALL THE BOOST!! 1200-HP, BIG BANG 4.8L
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- Опубліковано 2 жов 2024
- TURBO LS, SBE 4.8L, boosted with Cheap E-BAY turbos, til it breaks! Behind the scenes of The original Big Bang LS Project. How much power will a stock (Gen 3) bottom end take? What worked. What didn't! What would I change to do it better? Can an SBE 4.8L make even more power with better prep, turbos and intercooler?
Dude, seriously...you've got the best gearhead channel on the Tube. That 4.8 is a trip
Gale and I don't agree on the boost gauge-my point was that the pistons and rods don't know what the boost is, only the cylinder pressure. The Boost gauge can be used with great success on relative changes, but I wish Gale all the best on selling the general public on his Fancy mass/density/temperature measurement!
Uncle Tony. I'm subbed to your channel. Really enjoy your content. I'm hear because of your videos. I seen where you where talking about this channel in one of your videos.
@@8SecSleeper maybe you should do it and post a video. Let me know when its up.
Build list?
He’s the papadakis of v8s
"If I did it again, I would change". DO IT AGAIN!!!
Easy to say when a magazine isn't paying to do it again.
Do another 4.8 and do all the things you wanted to change! Would love to see what a 4.8 is actually capable of!
I’ve got a 2600lb car turbo 4.8 4l80e waiting on converter,I’ll be happy with 9s lol
I really like the 4.8 you find the l20 2011 you get 305 pony from factory and I got the l20 for 600 with only 30.000 miles I pulled it myself a nice cam I'm probably pushing close to 400 pony
@@ftlboy717 my cj 7 loves the l20 4.8 3100 lbs way way faster then the heavy amc 360
This original Hot Rod article and Sloppy Mechanics (Matt) inspired me to start my turbo project. Thanks Richard
Absolutely agree!! Matt was a huge positive influence in my decision to boost my car.
This and sloppymechanics.com changed everything
@@hendo337 I hear ya. I still love my blue ovals but Chevys definitely has some good stuff. The Coyote 5.0 is still king of the V8 pile but affordability & availability for engine swaps makes it take a backseat to the bow tie LS motors for engine swaps.
I absolutely love my 1994 mustang gt, I've had it since new and I'm finally ready to make the Cardinal sin of sticking a 6.0 LS in it....😱
@@cardboardkiller6883 If I was a supporter of Ford Pride, I would use DOHC engines all the time. Why don't they produce one that is a true big-big-big block?
@K____ R____ if you look at the cost, you can buy 3 LS motors for what 1 coyote 5.0 costs.
If you look at Ford's history, they have always been competitive with Chevy & Dodge and have always done it with less displacement. It's pretty impressive when you think about how a 5.0L engine can rival Chevy's legendary 6.2L LS motor. Which is why Ford doesn't make a big block version. Stock Mustang GTs are pushing nearly 500hp off the showroom floor. That and fleet displacement regulations along with emissions standards...
People using stock injectors or non-flow-matched injectors are the real problem
snake eater 1500 ftw on the cheap but not junk
My question would be with the date of the dino log were you able to go back and see if it was a back pressure problem running those two small turbos or did it wind up being something else or were you unable to check oh, great video keep it up
I’m glad I picked the flow match. I’m just learning about the ls motors and was pricing out some new injectors to go with a cam my cousin is giving me that and they need to be replaced anyways.
Something I would really like to see: Take an NA, 7000+ rpm LS using the typical LS7 lifters that most people run and test running them at various plunger preloads from ~.020" all the way up to .180" or so with no changes other than the pushrod lengths. See if there is any power difference or if the curve falls off at earlier/later RPM with different amounts of preload.
He tested this. Check for his pushrod length vid.
I' d personally love to see the 4.8 pushed futher in a future video. Bigger cams, bigger turbo, less back pressure more boost iced intercooler 1300-1400 +hp?
This is the one that started it all for my dad and I.
YO IM A HUGE FAN OF YOUR WORK ON THE 4.2!
Junk motors ( the ones we ain't afraid of blowing that are made from junk) always perform the best when on a budget. Thier loose and have compressed every part that would of been loose if we cared and built it new. This bold has certainly inspired and old school to try the new school. Keep up the good work!
Yea, I'll be happy with just 7.5lbs of boost on a 4.8 in my GMT400 swap.
I have a bone stock 4.8 and Ive been running 20 pounds thru it for 2 years and the motor still runs like brand new I’ve only ever had transmission problems even tho have a shitty 4l60 but I wanna rip that shit out and put a 4l80 in that bitch or a built one if I have enough money lol
@@_clapped740i6
What year 4.8 ?
04+ are different than 03-99
Get a larger map sensor. And keep turning up boost in the 6L. 👍
MAP or MAF???
@@dj4monie build it to take it !
@@JustAGuy781 MAP. At these levels of boost most (all?) Guys are running a speed density setup which doesn't use a MAF sensor.
@@dj4monie
Transmissions can be built too 🤦♂️
This man is a genius on motors
The real killer is ignition timing and people trying to push 91 pump gas to that level. I know because I've pushed them on 91 until they broke. Now I use water methanol and I'm thinking of moving to e85 and meth injection on the next setup. I would definitely like to see a fuel vs ignition timing curve for a boosted 4.8/5.3 in a dyno video.
I think you should do test again but at this point with everything we know that works well. Large ring gaps , e85 or m1 , Bosch 210s or bigger , 5 bar map and giant turbos 88s or so. Only thing to find out out than is when rods decide to say peek a boo. No limits on boost or fuel.
Sounds like 2.5 HP per Cube is a RELIABLE LEVEL for your MODS! Whether 4.8L or 6.0L or anything in between! Great work!
Richard Holdener LITERALLY PROVING THE INTETNET LS CLAIMS WRONG! The diffrence between Richard and all "the other guys" is experince and he shows you first hand dyno information so. You know everything is real and true.Hands down best engine channel
I remember reading this article and being amazed. Thanks Richard for all your hard work and providing all this wonderful information
Great video I am building that TwinTurbo 6.0 in my 71 GS so I really dig anything that can be scaled up to that engine 👍 👍
I remember this being in a magazine! I absolutely LOVE the LS!
@@user-ie4kp7ni9d LMAO! OK since you wanna be specific, LR4. BUT, all of them are LS engines, according to the aftermarket. Lol
We need more of these big boost videos on stock engines. Just open the gap, use a good head gasket and let it rip!
Richard - please pan out a bit further so we can see the cot and shaving station you keep by the dyno 😁
can't show all my secrets
@@richardholdener1727 An an inventor, I can feel that.
These video's is a great help and eye opener.
I love your no bs approach!!
Would love to see a SBE gen4 5.3/799 head with just ring gap, studs, cam and spring upgrades taken to 29 psi
Thank you for your test and your time Richard, I appreciate a lot your tests on LS
Boost also depends on the intake manifold(s), what turbo(s) size, etc. if you have a better flowing intake system, you’ll make the same power on less boost than a system with the same FI but a restrictive intake system. Example: I’m a miata guy. A popular setup is a GT2554R turbo @ 16psi. That’ll do about 225whp with 3” intake piping and 2.75 or 3” exhaust. The other popular system is a GT2560, which is a little bigger turbo, @ 13psi. With the same 3” intake/exhaust and the same size intercooler, the 2560 does 250whp@13psi.
I always enjoy these vids and now that I got it connected to my big tv it's just that much better lol.But thank you for taking the time to undo to make these vids !!!
Be nice to see back to back to back to back pulls at that power over several hours really get some heat in it and see what happens just as if someone was getting in it on the highway to see not just how much it can handle, but how long it can reliably handle that. Would be a lot of work but would be great to see.
you missed the point of the Big Bang test
Love to see what a gen4 4.8 would do since it has short stroke and longer rods
A 4.8 is a 4.8 whether it's a gen3 or gen4. Its literally the same thing.
Yeah, I realize that but the Gen 4 rods are stronger. They would have a higher horsepower limit.
@@scottydoesntknow254 differences, as well as bigger 36LB injectors, 243/799 heads. Which is an upgrade that NBS have to do, NNBS have stock
@@SnIt3yAsTr0 no one was talking about that. He was talking about the rods and stroke. And I'm aware of everything you just stated amd they wouldn't be using those injectors on a 1200 hp build and using whatever heads they used on the actual motor in the video.
Damn these 4.8s are AWESOME!!! BEST BUILD ON A BUDGET 😁😁
I love your videos. Thank you.
No ring gap, no engine with boost! Big bad BOOM! I want a 4.8 just like this in my S-truck, with about 15psi, I don't know why I want the little engine so badly! I guess a 5.3 would work, I just want to put the 4.3 some other place , swap in the 4.8!
The only good thing about the HIV-19 is I found this channel!!!
Awesomesauce...and the multiple motors I have blown up at 12psi IS on me lol but this new forged 6.0, 120lb injectors and bigger turbo is going to make that 1000 mark before I keep driving my jalopy across the US.
Calling people out on their crap, I love it lol
I think more guys will relate to the smaller ls motors videos...I love my 4.8...it's kind of like my badge of honor to say O it's just a 294ci 4.8 ...I would love to see some of the same size turbo's with different exhaust AR housing on the 4.8 or 5.3 how much of a difference will that make...keep them video's coming
@@dj4monie 6.0L sounds so much bigger!
Yup. Love my “little” 4.8
The Big Bang 4.8 definitely needs to go back on the dyno. 👍🏻
I'd like to see a comparison between ball bearing and cheap turbos
I'd love to see a variety of turbos tried. Keep the compressor the same but swap exhaust sides to see the effects on response. Ball bearing vs. journal for the same reasons. The latest aero from the big companies vs. last generation turbos. A couple of the latest Garret GTs for example. Not easy, and depends upon the largess of the turbo companies, but it would be awesome.
More 4.8 testing please great job.
"Use what ya got",,,,,, man after my heart.
And I don't even go that way! Ahhhhhh hahahahha great channel. I've said it before no BS , no brag, just facts! Love it.......
All these videos make me want to swap in LS :) I've seen mod 4.6, any plans to turbo an old mopar magnum? I wonder how they take the boost :)
I remember getting the magazine back when this was new and was like OMG!
Finally. This video and the follow up "big bang" videos are wayy overdue.
Richard, I really appreciate all your videos and the information that you're sharing with everybody. Most of all I appreciate how humble you are. Thanks bro
Lol I bet no one knows how Sherman and Peabody are
Ohhhhh reeeeeally? 🤔🤣🤣🤣🤣
Quiet you! 😁
@@dj4monie I'm mid 30s lol
Huge boost on a 4.8
This has sloppy mechanic written all over it!
Matt does good stuff over there-this was years before Sloppy even existed
Richard Holdener real mechanics ! That’s why lol
@@richardholdener1727 sloppy has been around since late 2006, and in its current matt building stuff guise since early 2008 lol
“That’s a LS cam. This is a LS motor. In it went!”
I think you can crack 2000hp on the 6.0 and probably get up to around 14 or 1500hp for th the 4.8
I own a wrecked 2008 Chevy delivery van with a perfectly good 4.8 that I would love to swap into an 88 Suburban and put a twin turbo setup in it. What cam would be good? How well did those ebay turbos hold up? Or did they break after a few runs? I would love to have an 800hp 4.8 under the hood of my already enormous Suburban (which has a 454 in it)
they are still alive 10 years later
I want to get a 4.8l and turbo it, but can’t decide weather to go twins or a single 🤔 your videos with a 4.8l is helping me greatly!! Thank you 😆
either works well
Id like to see how much you can get out out of a 5.7 unopened, no cam swap, 241 heads, ls6 manifold, stock tb, stock springs etc
I think it might suprise some people
Keep head gaskets in it becomes a problem before the bottom end fails with the aluminum block.
@@bartpang theres plenty of aluminum blocks in the 1000 hp range
@@scottydoesntknow254 I know of two LS1 blocks that broke pushing 500 at the wheel. Also I seriously doubt any of those 1000hp engine did it with stock head bolts.
@@bigboreracing356 and who are you?
@@bigboreracing356 because you think you are someone important, the guy makes money on his videos and people giving him ideas for videos to make, and i seen you reply on a few comments.
I still have those magazines at my shop right now! I had just built a LS7 67 Camaro and I planned on doing a 4.8 turbo build In my wife's 240z. I never got around to it tho...
How about a gen 3 5.7?
Richard Holdener im not a ford guy but i want to see a big bang 7.3 Godzilla!
That little 4.8 is amazing!!! Do you incorporate the knock sensors on these runs?
we do not
This is basically super car killer
I honestly like 4.8s better than 5.3s at first I went with one because my first turbo car build was a 4 eyed foxbody and wanted less ci than a 302 because that's most ford guys complain about , at first I ran it N/A well it had a NX wet plate kit for the stock truck intake and TB with a lunati cam and springs I used the flowtec forward facing turbo headers I already had and ran the exhaust out the fenders with a th400 w/T brake with a cheapo jegs 3500 stall and 4.10 gear on motor it went 7.60's on spray 6.90's pb on a 200shot was 6.79 and whuped up on tons of 306s 331s 347s 351s 363s and a few 408s only 1 347 had a Paxton blower and one 331 was a turbo, the turbo car was almost dead nuts even with the 4.8 on a 200 shot but 90% of the others where nitrous cars I'm not saying I put train lengths on any of them well maybe a few but the little 293 on the bottle didn't get beat often by other 3300 pound nitrous assisted street cars I'm talkin about cars that could be dailyed no huge solid roller cam setup with 2 or 3 stages and fiberglass hood doors trunk lid cars that have tag and insurance lol I got my ass whupped by several of those lol but in 2015 when I went turbo and barely knew anything about boosted setups this was my first, I swapped a used race craft k member and a arms and got a hell of a deal on a set of Strange front brakes calipers,rotors,manual master cylinder,brake lines and all the hardware off a wrecked foxbody on yellow bullet forum, I tried to take as much weight as I could off the front end and basically redo the front and rear suspension on a shoe string budget best thing about foxbodys are the availability of used parts I got the car down to around 2200 as a roller it ended up around 3000 pounds but with a gen3 4.8 completely stock bottom end even oil pump with stock 799's with BTR springs and a trunion upgrade autozone head bolts, off the shelf LJMS cam that john B. recommended a very simple custom single turbo setup with a cast wheel Borg Warner s475 t6 1.32 exhaust a air to air intercooler from Amazon leash electric boost controller and bump box setup and a methanol injection setup I designed lol I really thought I had something until I found out lots of people have done it lol I took a nitrous fuel solenoid y'ed of to 2 big boy n.o.s fogger nozzles in the charge pipe and controlled it with the Holley hp efi system that was probably the most expensive item in the build I still have it and running my current setup I reused my th400 that I got for free from my paw paws old wrecked 80 c20 pickup besides the Rebuild kit and better clutches, the manual valve body and trans brake and pan all the hard parts where stock I believe this time I actually bought a good converter specced to the setup it was a 10'" 3800stall from PTC and actually one of there cheapest converters they sell kept the 8.8 with 4.10s but now it had a bad ass adjustable qa1 coilovers and TRZ anti roll bar, when I bought the car for 3000 as a roller it already had a decent 10 point cage a 8 gallon jaz fuel cell and a pretty nice aeromotive fuel pump I think they might have forgot to pull that out I just had to get a regulator and another fuel line used what was in there for a return but anyways after I got it dialed in on a 28x10.5 slick it went 5.70's pretty consistently PB was a 5.73 when I owned the car this was when I could barely pull or add timing control boost and fuel getting the car to run as good as it did was crazy I wasn't crazy about the car and wasn't really attached I got a good offer and sold it and they too the car and they set the suspension up for radials went to co2 boost controller and had somebody who knows what there doing behind the keyboard and how to really make the car work the first trip out it ended up goin a 5.56 then 2017 they pulled more weight out put a less tired sbe 4.8 in the car and swapped over to methanol and a tbss factory intake and with a newer more aggressive LJMS off the shelf cam and new BTR springs I Believe they decked the heads a little valve job and manley valves basically just cleaned the ports and chambers up on the 799 heads with arp headstuds a TBSS intake and nick Williams 92mm cable style TB with 275 pound injectors and got the car down in the low 5.40s before it finally went boom I believe with a filled block a 3.800 bore with a good piston with factory gen 4 crank and rods with a really aggressive hydraulic roller or solid roller and some heads that really flow would definitely go 4's hell even with the stock bore and pistons and be pretty reliable little cheap setup.
nice
I’m hoping for almost 1300 again, 1500 if it’s gen 4. Man I thought this was the 4.8 re do. 🤦♂️
Yeah hope he redoes this and mo powa babyy
Dylan Turner I don’t know why I thought the last 4.8 made 1300😅😂. I do think a re do would be capable of high 13s maybe even 1400 hp.
I want to c u do the a 2012 chevy impala v6 lfx ffl motor same camero v6 and change internals heads etc.....plz
Aftermarket heads don't add alot of power vs the cost. They work best when boosted. But are expensive Aftermarket heads worth it unless money isn't an issue?
Bv
Have u ever tuned a 2.3 Ford Lima on boost? If so what was u numbers
The "Team Boosted" channel has a datsun 240 with a big turbo on a Ford Lima. I cant remember the numbers off the top of my head, but that thing rips. Go check it out.
My dad made 425 at the flywheel in the early 90s with his merkur 2.3 with racer Walsh cam rods and flat tops with an o ringed head he scca raced it against a bunch of porsche guys he'd run away from them on the straight aways but lose ground in the turns couldn't stuff enough tire under it to keep it from overpowering the ass end coming out the turns
Is the Lima the 2.3L SVO Turbo motor? If so, yes, we did lots of stuff over 400 wheel hp way back when
@@richardholdener1727 appreciate it
@@Cowboy.underwater ya I kinda watch em channel getting kinda off kilter for me.
Thanks for all your videos brotha really informational!!!!
I would love to see you do this with a gen 4 4.8, I just picked one up myself from an 09 savanna and I have a feeling it’s going to love the boost.
I love my 4.8. Can you show the most reliable build NA and boosted? Something that can last as a daily driver, and still melt tires.
lots of 4.8l build vids up
@@richardholdener1727 I just binge watched Your channel till about 4 in the morning. lol Ty very much for all your testing.
The big horse power numbers are great and all but the 4.8 is usually bolted up to a 4l60e and that for sure won't hold the power. Yes, its easy to make big power with the LS engine but the rest of the power train is often forgotten.
There are two channels I watch for pure unbiased information. #1 is Richard Holdener, #2 is Project Farm
late but here is the power recipe. 5.3, ls7 cam and springs. stock truck intake. and 20 psi. 750hp easy.
Thanks to you now i can't wait to try a 6.0 destroked in my xj when the 4.0 goes!! Might have to hit it with a hammer and nitrous to speed the process up 🤣🤣
Now I know how to make 1200hp for cheap
You guys need to build a 351w or a 460 BBF. Twin turbo.
i did a big bang 351w
How reliable would a turbo'd 4.8 LS running just enough boost to best a 6.2 LS be in your opinion?
I am at a crossroads right now with my 1997 k1500 Z71 5.7 L31 DD Silverado work truck. I'm tempted to just rebuild, stroke & cam my 5.7. Everyone is telling me to just stick a 6.0 but that swap would exceed $4k for me. I want something more cost effective. This isn't a race car/race truck, it's a daily driven 1/2 ton GMT400 work truck. It will be called upon to drive across the country, idle for long periods of time in the 120°F Arizona summers and tow 4,000lb trailers in that heat from time to time.
I want this truck to stay reliable, affordable & easy to fix.
I'm not completely against a LQ4 6.0 LS but I would want a rebuilt 6.0 if I went that route, which would put me somewhere around $5k for engine swap.
That 6.0 swap seems like a lot of $ when I could reach acceptable HP/TQ #'s with my old L31 5.7 by adding a stroker crank, cam, a little die-grinder/dremel head work and a handful of bolt-ons. I calculate that I can realistically garner 330hp/400tq at the flywheel with the OG 5.7 L31. Which would be enough to make me smile.
Still, the thought of just boosting a low mileage 4.8 and simply throwing another $600 low mileage 4.8 at it when that one dies is attractive to me.
I have a 2wd 2.7 ecoboost F150 that I want to get rid of because I have too many vehicles, not enough parking spaces and I'm not really into 2wd trucks. Other than the F150 being 2wd, I absolutely loved the truck. No chevy or dodge can match its on road handling and comfort. Anyhow, this F150's power & reliability, paired with how affordable turbos have become has changed my perception of work truck turbo applications.
Anywho, advice on the viability of 4.8 junkyard engine paired with an inexpensive turbo setup for a work truck application would be appreciated. Thank you for taking the time to read this....
low boost turbo 4.8l or 5.3l (same price) would be good
Since summit has several stage 4 cams, what do u recommend for a ls3? Specs would be awesome! Got my summit catalog and my credit card ready to go!
With the 4.8L stroke of 3.27 and a 6.2 L bore of 4.065. About 340ci. What kind of forced induction power would that combination make? Street; Street/Strip. Supercharged and/or turbos...? While it's certainly not a flat-plane crank engine, it would run smoother and probably cost a whole lot less.
see the destroke videos
I’ve got a question that no one can seem to answer. So please help Richard!!
Gen 4 4.8
Bored .030
Forged pistons -2cc dome
Stock crank and rods, arp rod bolts
Btr stage 2 turbo cam
ARP head studs
243 heads which come on the gen 4
660 springs
It’s only making 700whp on 20psi
Motor for some reason doesn’t want to rev past 6350 or so
Any idea what’s going on?
WHAT HEADS AND WHAT TURBO
@@richardholdener1727
243 heads, not worked
But that’s what come on that engine factory.
Forced inductions 7687
Making my day with all this daily content... Thankyou
These are tough blocks though. I don't trust stock pistons or rods.
How did you not know it wasn’t a 4.8 they have flat top pistons
Great videos, I'd like to see the same kind of testing done on a 6.1 hemi
I did one on a 5.7L that made over 1000 hp
Sherman and Peabody man you just took me back lol
You say in your video "Let me know what you think" Well I think you know what your doing. Richard and Popodopolis are my two favorite engine builders. Richard keeping cost in mind and being more experimental is what I really enjoy in his videos
Also, I don't see why that 6.0 wouldn't swallow all the boost you throw at it. Probably have bearing issues around 1700-1800 would be my guess.
Sheirman & Mr. Peabody love the refrence
After this video I'm saving it and going to build my 4.8 2001 gmc sierra that's my dream i don't want any other truck everyones been telling me it's no worth it but your video's Proves it in every way it is Totally worth it
That article is my bible for ls Shit talking. I refer to it a with reverence and pride! Thank you Richard!
Its good ammo
@@richardholdener1727 its like bringing a 50cal. To a bb gun fight! Lol
let me put it in my car and see if I can break it... or my car lol
It's theorized that the ideal rod/stroke ratio for turbocharging is 2.0:1... so I'd like to see that tested, and what results. ;)
A request.... can you do the same with the Aussie FG Barra Six NA ?
I don't have one of those but would be cool
Richard Holdener there are a few being imported to the Us. Just a thought .
Richard Holdener if you do go to do it would be awesome!
Need the later FG model , upgrade valve springs and head studs and oil pump gears as they are know to shatter and trash the engine .👍
Richard, Great channel. Not sure how I missed it up until now. You should do a budget, street friendly 302 SBF EFI turbo build for us fox body guys.
what size injectors and how much fuel pressure? Thanks.
static pressure was 58 (boost referenced 1:1) and we had 160-pound injectors if i remember right
Hey Richard will that fast intake fit on a LR4 2004 4.8 / 862 heads ?
You gotta push a gen4 bottom 4.8L
Also wanna see a 4.065 lq4/9 w/ls3 pistons under boost and maxxed NA (maybe flycut em)
This test was the test that got me into ls motors.. thank you for all your work!
I know now what i am going to do for my Colorado Xtreme
What segusio just started and I can tell you right now how much power and ls motor can handle I'm not Indian builder I have no clue from experience I know is it all depends on what you use white head bolts how much Bush you put what kind of gas get your using its just plain common sense people
Will getting a set of port stage 1 243 heads 62cc chamber or prc 205 heads work great w my setup? I have 234/239 .615 .610 112+2 cam, 37lb injectors, 3600 stall, ls3 throttle body, ported tbss intake manifold
what size motor? and for what usage?
@@richardholdener1727 4.8L
You need to do a max effort max power huge single turbo like 90+mm stock bottom end 6.0 5-7 bar map run it on meth 500lb injectors custom spec cam and let's just see when it let's go. I think that's what most people really want to see something max effort no hold backs.
I'm not sure how a single provides any more than these or the twin Borg S475s we ran on the 6.0Ls
Twins is fine too I was just using an example. Just the max effort sbe would be really cool to see. And your the first youtuber to ever respond to me so right on. You actually interact with your fans.
how much timing would you run on a stock turbo 5.3 at about 10psi on pump 93 assuming the correct air/fuel ratios.
15-16
This tells me that the 5.3L in my Silverado is capable. Everything behind it will probably be a weakness.
Cheating, ported heads,ice,fast intake,cam
I’ve noticed that a lot of factory turbocharged cars now a days make a lot of torque down low and that drops like a rock the higher you rev it. Is that mostly because cam profile restricting air flow?
its because they use small turbo's from the factory that spool fast even at low rpm to give low end torque but run out of breath on the top end. The feeling of a bigger turbo kicking in is "scary" to most of the general public and will be too much to handle for most of the soccer mom drivers on the road.
bdan 1324 that’s what I’ve been hearing, but shouldn’t the power curve tend to be amplified under boost. So if you have a lower duration cam shaft causing a restriction, that in theory would restrict high rpm power I’d guess
ua-cam.com/video/v_LNr7oZR9Q/v-deo.html
@@rynev3392 yes that is true. Turbo engines don't normally need as much camshaft to make power though compared to naturally aspirated. A smaller camshaft that makes good low and mid range torque can help get the turbo's spooled up earlier though compared to a big lumpy camshaft and having lots of overlap isn't the best thing if you have lots of backpressure. There are obviously trade offs between using big and small cams and different sized turbo's and different combinations will react differently so its kind of a balancing act when it comes to this stuff you need to pick the camshaft and turbo's that will make best power in the rpm range you are looking for
Factory turbo motors tend to have falling boost curves and mild cam timing and long-runner intakes
Idk Richard let's find out. On the next episode of speed secrets!
5.3 could make 1500 to 1600 with right junk.