Cammed 8.1 Big Block Chevy Dyno Tune. How much power did it make to the wheels with new Comp Cam?

[@melissaclark4912]

The stock exhaust manifolds block almost half the ports in the heads, headers were the best mod I did

[@Johnman3341]

These and the 454 vortec love headers.

[@christophermix6845]

The only place for manifolds is the scrap pile or for turbos. Unbelievable how much power and drivability you gain from headers.

[@ronkirkham3410]

Stainless works long tubes

[@bat__bat]

Unfortunately, when you give that 8.1 the justice it deserves and go with bare naked exhaust, it sounds like a mix between an NHRA dragster and an old man's fishing boat. Neighbors love it. 🛻💨

[@jameskirk3]

Yep, they're trash. Need headers

[@karlwahlfield6462]

man thats a mint truck! 01-07 were the best trucks in my opinion

[@wvrockcrusher]

Nice truck! Open that exhaust up and you'll find even more power. I have a 2002 GMC 2500hd std cab with the 8.1, 4:10 rear, and the ZF 6spd. manual that I have owned since 2004. Only had 20k on it when I got it. One of the first things I noticed was how restricted the muffler was as it would get really hot on the bottom side and actually split open while I was pulling a load with it one day. I put a Gibson dual sport stainless cat back kit on it, and it made a world of difference power wise and went from 9mpg to 10.5mpg empty driving, which was a huge gain to me. I also put a K&N filter in and put it on a Hypertech tuner. This resulted in an average final mpg number of 11.3 on 33" tires. The manual TXM makes a difference on mpg if you drive it right and keep your foot out of it. This truck has been absolutely wonderful to own as it now has 218k on the clock. I have replaced one alternator, 4 batteries, 1 fuel pump @ 200k, 2 front wheel bearings, rear hub seals and bearings, and totally rebuilt the 231XHD manual transfer case @ 210k because of the pump wearing a hole through the case and hard shifting. Have never touched the engine, TXM, or the original clutch other than regular maintenance, of which I am very meticulous about. Not too bad in my book.

[@dommeister4004]

Most people will never get it. I’ve read the comments that said turbo ls makes more power or my power stroke makes more torque or why’d you do all that and keep the stock manifold and muffler blah blah blah. I’ve owned 4 8100 trucks and there’s just sumthin about em you fall in love with. I have an 04 lb7 duramax that I just dropped 7500 into for injectors turbo tune fuel lines etc but the old 8100s I had never needed more than oil changes or fuel pump which at most were 250 bucks. I applaud you on the build and hope you enjoy it. I’m waiting on my newly purchased 03 GMC 2500hd 8.1/zf6 truck to get delivered from Oregon. 57k original miles and one owner truck. Hope to keep it the rest of my days like this one of yours.

[@danthompson1467]

I feel the same way about my 2011 2500hd 6.0 gas I keep everything updated and replaced before a problem 285000. Miles drive it anywhere quite and smooth as butter rolling down the road at 75 . Great job

[@samsquires2877]

That is such a beautiful truck. I have a 2000 Silverado regular cab long box 2WD V6 that I will never part with and hope to do a full restoration like this someday. As far as I’m concerned this generation of GM trucks are some of the best trucks ever made.

[@jefflewis9395]

Awesome truck!! I would never get rid of it. The best era for Chevy trucks

[@NWI_Steel]

Beautiful truck, Joe. Ready to go for 25 more years

[@Linknelson]

Wow man, this is the way to do a restore, perfect all around. Such a cool back story too. Props to your restore guy. 🔥 this answered my question in the tow video comment.

[@bigmurph1447]

Can't beat the looks of a reg cab they always look mean. I have a 96 dodge cummins with compound turbos. I also have a 2024 chevy 3500 with the 6.6l gas but it's a crew cab I also most bought a reg cab

[@matthewanderson9912]

Beautiful truck. I always wanted one of those. Never did even get to drive one. I do feel that these new L8Ts are pretty comparable to them though. I base that off the last generation of the 454 trucks. Also I just figured out a few months ago that you’re in one of the 6.6 gas Facebook groups. It was actually from a post about this truck.

[@Carstuff111]

What a beautiful truck. I love these beasts. To be completely honest, your truck now looks better than the ones I saw on the showroom floor when these trucks were brand new back in 2001!

[@joesjunkgarage]

Beautiful truck! I have a 1989 Silverado the has no rust. It unfortunately it has the GM pealing silver paint so common in that era of trucks. But it’s been the most dependable truck I’ve ever owned. Wife hates it, I love it!

[@bartanderson6476]

Thanks for sharing with us, Joe! Really enjoyed it. What a beautiful truck.

[@truckguyjoe]

Appreciate the feedback!

[@SUPERTRUCKER1984]

Buddy of mine had one years ago. Raylar cam, heads, intake and rotating assembly. Had 250shot of nittrous at first. Then switch to a sts turbo kit.

[@oceanwaves83]

Mustang Dynos read lower numbers than DynoJet. Also you have big 33's and the Allison like you said. You have a lot of stock parts holding back your power potential.

[@brianklump]

Beautiful truck Joe! Looking forward to some tow videos.

[@logut80]

Beautiful truck! Probably gain 30-50hp from exhaust plus mpg because the engine would breath better & easier

[@C10chevy85]

Stunning truck brother!! 👍🏼

[@98dodge360v8]

I made 255hp and 395ft lbs with my cammmed 8.0 v10 dodge. That was through 35x12.50s and no fan set up in front of the truck, just heat soaked. Car guys see those number and always say, "Thats it?". Yes, because peak torque was a 2800rpm and came in at 380ft lbs at 2100rpm. Its just all torque all the time pushing nuch heavier duty and therefore less efficient drivetrains. They drive super nice and tow well because of it. Feels much lighter on its feet with better response than a diesel. For all you diesel bro's diesels will not get good milage maxxed out. 03 Duramax pulling a 22ft enclosed car hauler with 67 chevelle in a strong cross wind, 4.2 mpg. It was a 120mile trip, almost didnt make it on a full tank. Energy needed is energy needed at the max.

[@MoparGuy-x1r]

Probably have the stock manifolds on it I take it? My 2001 ram 2500 long bed 4x4 has the v20 5 speed. Beautiful maroon and tan interior. I refreshed the engine mild cam from Hughes, h eaders and throttle body. Jba headers into a 2.5 y pipe to 3 inch magnaflow exhaust. On the dyno with a computer flash it put down 507 ftlbs and 354 hp. All before 3k rpm. Averaged 12. In town and could get 20mpg on the highway at 65..

[@98dodge360v8]

@@MoparGuy-x1r Nope. Headers, 2.02 stainless valves, stock 2.25 exhaust into a single 3.5" muffler. 102mm throttle body from Utasome performance. I just did a 4" intake adapter and ditched the factory 3" setup and that really opened up part throttle performance. Also its a conservative 87 tune. The 47re is terribly inefficient plus each rear tire and wheel I have is about 90lbs, they are stupid heavy. One thing is the cam is 216/216 but only .450" lift. Crower claimed thats all they could do on a regrind.

[@MoparGuy-x1r]

@@98dodge360v8 yeah It's a hassle trying to get a cam blank for those. It was hard back in 2012 I can only imagine how hard it is to find parts now. Even the flywheel was a chore to get. I wanted a spare because they don't make them at all. I can't remember the exact lift on my cam ill have to see if I can find it

[@michaelpopp6340]

I expected at least 300 to the wheels. That's an awful lot of cubes to only make 261 with a cam and 93 tune. That's only 0.53 rwhp per cubic inch. At least it has a flat useable torque curve. I'd personally just tune it for 87 and save 10% or more on my fuel bill.

[@98dodge360v8]

@@michaelpopp6340 That's why the 8.1 4l80e combo the suburbanand avalanches is better than the 8.1 allison combo the silverados got. The allison kills power. The 8.1 was rated 340hp but typically puts 230hp to the tire with the allison.

[@691plow]

Beautiful truck, I am slowly getting my 02 crew cab LT diesel into better shape need some body panels so jealous of your truck 👍🏽

[@ronkirkham3410]

And your 100% right.. Amazing truck great combination.. 3:73 or 4:10,s

[@ronkirkham3410]

I also need to do my frame or find one like you did, would love to communicate

[@jorgefigueroa0098]

Love how to went about it good sir! Keep up the great content

[@truckguyjoe]

Thank you!

[@brodi5367]

Very nice build

[@truckguyjoe]

I appreciate it!

[@poobank]

Healthy torque curve. That engine will last longer than our economy lol

[@slow_restoration]

Nice to see the truck back together! FBI Chevrolet sounds very interesting!

[@truckguyjoe]

I need a Chevy & GMC franchise!

[@brandonschmitt2609]

Looks great Joe ! This is what mine needs! Can’t wait for FBI CHEVY!

[@truckguyjoe]

Thanks Brandon! Appreciate the feedback. You still got your LBZ?

[@brandonschmitt2609]

@@truckguyjoe yes I still have it. It’s time for a refresh or a new truck!

[@shawnkennedy8425]

Bad ass truck, them numbers though seem way off. Unless like you said the trans and gearing sucking it all up, but that should be atleast 400hp 450-500lb motor by itself.

[@jaycetolison]

Hey Joe I was wondering when we’re gonna get a 2024 2500hd duramax 0-60 would also love to see a 24 l5p vs your banks tuned l5p

[@truckguyjoe]

It’s funny you mention that… I’m mad at myself for not racing the trucks against each other while I had them together. My Banks truck is back to stock and sold it already. I am going to try to find somebody around Erie that I know that we could line up against each other to see how a stock ‘24 compares.

[@evanch123456]

Nicely done!

[@deanferrie7666]

chevy 2007 2500 6.0 litter Bored >030 stroked truck cam made it a 6.7 litter dyno tuned. 410 rear wheel hp 430 ft torque. I wish i would have bored .060 to make it a 6.8 litter. If you want hp bore and stroke.

[@ronkirkham3410]

Hey, I just subscribed, I have a few questions, I have an 05 sierra 8.1 ,with a raylar cam and a bullshit basic tune. I know Raylar make good parts that make good power just costs a fortune.. just looking for your opinion..I know the headers are an issue going with stainless works long tubes..any input is greatly appreciated

[@nomadicfenceman509]

That’s probably the most desirable truck I’ve ever seen… there’s not a 2024 gas or diesel that can compare

[@astro4308]

What a beauty

[@Voges2023]

This truck is delicious

[@coreybihl7488]

I have an 01 2500hd with the 8.1 and a Allison trans what is some upgrades that work but arnt over the top price to help i get like 7mpg

[@nismor3490]

Truck looks amazing!! Does it have a lift in the rear?

[@truckguyjoe]

@@nismor3490 new GM leaf springs…they definitely need to settle a bit

[@nismor3490]

@@truckguyjoe I need a set I saw your truck did not squat as much with all that weight over the rear and mine almost lays on the bumps with the same weight lol. 330k mile springs for ya 😂

[@NotoriousZNT]

amazing truck

[@maxhenry1977]

She’s a beaut!

[@slaytanic921]

Sweet truck

[@dailydose8035]

Mustang dynos read low compared to others. You could go to a different dyno and make 300+WHP and 4XX torque.

[@Slowenchiladas]

Didn't do the intake mod while you were there? Who tuned it? What are you reving it out too?

[@truckguyjoe]

I was only going for a small improvement in day-to-day driving and torque. I wasn't interested in going beyond that. My goal was to keep the engine basically stock. If you look at the dyno graphs at the end of the video you can see the truck is revving out to 4800 RPM

[@utoobexecsblowme]

Which intake mod are you speaking of?

[@duggydo]

You did pretty much exactly what I would have done. I have my 2006 with the 6.0 and only 28k miles on it still. Someday I will do similar to what you have done. Also, what size tires are you running? They look like the perfect size.

[@truckguyjoe]

295/75/16…I love the look of them!

[@duggydo]

@@truckguyjoe Thanks Joe. I am going to get online and see what's available right now.

[@trickyricky12147]

​@@truckguyjoe Me too! I'm glad it's not KFC bucket rims with rubber bands like everyone else would do, especially younger people. Glad to know I'm still not the only who would do a PROPER wheel setup like you did! Also, it makes sense for a truck simply for towing/hauling requirements even though you stated you retired the truck, but it's good for the rare occasion you might choose to tow decent things.

[@user-uv2ht8rg7m]

What cam

[@truckguyjoe]

www.compcams.com/xtreme-energy-206-212-hydraulic-roller-cam-for-gm-8100-8-1l.html

[@MrDan7171]

If you did a CAI, Long Tube Headers and a Cat Back Exhaust you will get much more power! You are not any more than stock motor with a rebuild, upgrades and tune! Your choaking the motor down and it's going to kill your gas milage!

[@truckguyjoe]

I just wanted a slight bump in performance… Nothing significant. The goal was to retain stock appearance with slightly better horsepower and torque… this truck will not be driven much at all… It’s pretty much now a summertime ice cream getter. The horsepower and torque gains we achieved are much better than a stock 8.1.

[@hyracer6684]

Headers are a pain in the a** unless you're building a race truck. I've owned 3 vehicles over the years with headers, and the exhaust always works itself loose. I've used locktite, double-nutted, you name it, and they always develop leaks. Un-capped headers are great, with exhaust systems: no way!

[@domsileo1145]

No headers ? The stock system robs a great deal of HP….

[@truckguyjoe]

@@domsileo1145 no headers… The goal was stock appearance, slight bump in hp & tq

[@domsileo1145]

@@truckguyjoe understood….you did a great job on it…I have an 2010 white dmax I did the same process too. Lots of body work and a complete rebuild of the drive train to stock specifications..

[@willborio8613]

I have a 2010 5.3. My numbers after cam up rebuild. 320 hp 340 tq. Thats sad numbers concidering its a big block.

[@truckguyjoe]

@@willborio8613 The drive train creates a huge parasitic loss, but it’s necessary for trucks like this one pulling trailers and plowing snow to have such a heavy duty transmission.

[@willborio8613]

@truckguyjoe I guess I just think about modern engines. I mean 1 tons pulling 25k + modern engine are insane and these old ones though nostalgic just can't compete. That being said I don't like these small engine turbo truck

[@2jojoruiz]

Your truck is measured in many ponies this one here measures in Clydesdales all torque buddy for pulling not doing burnouts in a circle did you know diesel motors have thousands of foot pounds of torque in simi truck but very low horsepower

[@willborio8613]

@2jojoruiz as you can see I showed my tq numbers. Which isn't the much less than this one. Which is a big block. I don't get how you could think I would make sense of your statement. This isn't a diesel. If it was it would be a massive difference in hp and tq.

[@2jojoruiz]

@@willborio8613 I have an 8.1 in my Kodiak and with a mild RV cam for pulling and a few mods it's kicking out literally 430 hp and 580 in torque if you look up a c5500 u haul for sale it's 325 stock and 450 torque these bastards are made for pulling my truck weighs 22,000 lb and takes off like a pickup to each their own I like big block Chevy small block Chevys Cummins engines and I work on diesel for a living and also love building Big blocks and small blocks show me that is I've done a few LS engines don't care for them

[@richardsiegfried9423]

So you sped up the intake of air and gas but slowed it all down and choked it by leaving stock manifolds and exhaust? Well thats probably 50+ horse lost. Good job

[@truckguyjoe]

@@richardsiegfried9423 I was not going for huge gains. I wanted a slight increase in horsepower and torque, while maintaining all stock components with the exception of the mild cam upgrade and some roller rockers. I had no aspirations whatsoever of changing the intake manifold, air intake, exhaust manifolds, etc. I got exactly what I paid for… The engine looks completely stock when you open the hood. That was the goal… Keep the truck looking original. I had a couple of lifters fail… So I took the opportunity to do some very mild performance upgrades. Horsepower increase was not the purpose of this restoration/build.

[@XxIBRAHIMxX11]

@@truckguyjoethey wont understand.. i own a 496 my self in my yukon xl 2003 a couple lifters faild on mine and hurt the cam shaft .. since i’m gonna change it i search on comp cams and found your videos .. i’ll keep my exhaust and intake manifold stock

[@rossomeness3549]

6.0 with a small turbo would be light years better.

[@truckguyjoe]

@@rossomeness3549 i get that. My goal was a fully restored, stock 8.1 with very mild performance upgrades that you can not see or hear. No loud mufflers, no headers, etc. Small cam & 93 tune.

[@fastwalker21]

93 octane tune? The truck ran on regular, you did not increase the stock compression ratio.You probably did not add much power doing that. Only increased running costs.

[@truckguyjoe]

@@fastwalker21 I trust Trevor Hutter & his tuning experience. If Hutter’s tells me to run premium, I’m going to run premium.

[@truckguyjoe]

@@fastwalker21 keep in mind w/ the upgraded camshaft we altered the combustion taking place, along with the adjustments in fuel trims & timing. Technically the cylinder pressure changed with the specs on the cam.

[@aaroncooper8821]

With an 87 octane tune, I still experienced detonation damage to spark plugs so changed to a 93 tune since it needed higher octane anyway. Not alot of power gain but truck runs great. For what it's worth I picked up .5 mpg towing and 1 mpg empty with a cai, your results may very.

[@bobbobby1846]

93 octane is recommended for towing and performance by most stand alone programmers and tuners because of the timing advance.

[@truckguyjoe]

@@bobbobby1846 100%

[@Remingtonrestoration]

So all that work, & you can’t match the torque of my stock 25 yr old excursion 7.3 diesel…… 😂😂😂😂

[@truckguyjoe]

@@Remingtonrestoration the goal was a stock appearing engine bay, with slight bump in horsepower & torque. Not trying to kill the value of the truck with over-the-top components. I like the fact that at idle, you can’t here the cam. I have plenty of toys in the barn if I want to go fast!!

[@Arkansasfestus]

My 427 sb 80 gmc 2500 4 speed does 450 at the wheels

[@robjones8733]

My 89 K1500 ext Cab LB with TBI 350 puts out at least 85 hp to the rear wheels. 😊

[@bojowers1048]

I'd be ashamed of myself big ass engine and its only 280 horse power.8.1

[@truckguyjoe]

@@bojowers1048 built for torque! This truck will move a house at low rpm.

[@2jojoruiz]

When you measure at the flywheel you get more when you measure at the wheels you get way less