Low numbers for an LS6?
Thread Starter
Teching In
Joined: Jul 2018
Posts: 46
Likes: 8
Low numbers for an LS6? I just had my 66 nova tuned on a dynojet and was let down by what I seen. My setup is a little different since its in a 66 nova and not in a F body but what do you guys think?
LS6 short block
Tick perform mace street heat 1 cam 225/228 | .615”/.595” | LSA112+3
Total Engine Air flow 243 with Stage 2 Porting stock compression
Fast 92
Fast TB
Upgraded injectors I forget the states
Long tube headers
UD pulley
3" exhaust
Ford 9 with 3:70 Gears
4L60E 3000 stall
After 2 pulls my numbers were 407whp 376tq
What do you guys think?
LS6 short block
Tick perform mace street heat 1 cam 225/228 | .615”/.595” | LSA112+3
Total Engine Air flow 243 with Stage 2 Porting stock compression
Fast 92
Fast TB
Upgraded injectors I forget the states
Long tube headers
UD pulley
3" exhaust
Ford 9 with 3:70 Gears
4L60E 3000 stall
After 2 pulls my numbers were 407whp 376tq
What do you guys think?
Thread Starter
Teching In
Joined: Jul 2018
Posts: 46
Likes: 8
Teching In
Joined: Jun 2020
Posts: 6
Likes: 0
From: Louisiana
Oh, the LSX(R?) manifold? Cool. Looking at your specs, I think you went too mild on the cam and should have probably gone with a 102 instead of the 92mm. With the drivetrain losses the numbers you got are probably accurate. I'd look for a more aggressive cam and a higher compression to make more HP. Might also look at your intake to make sure you're pulling in cold air and you're not suffocating your engine unless you ran it on the dyno with just the TB (manifold and TB can only use the air provided to it by the intake system). Anything past that and you're going to need something more serious like boost or stroker kit.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Numbers aren't the highest but not overly low either. You definitely have some great parts on the motor that would make quite a bit more power with a big stanky camshaft. I was once a small cam guy until I put in lots of seat time behind LS platforms of many different types of builds. Big cam, big numbers.
TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
Combo has good parts and those TEA stage 2 ls2 heads work really well.
However, I would have used the FAST 102mm.
It's a much better piece than the 92mm.
Camshaft is good and mild so I see so issue with that.
If you fit a larger camshaft don't go too big or else driveability will suffer too much if it's primarily a street vehicle.
However, I would have used the FAST 102mm.
It's a much better piece than the 92mm.
Camshaft is good and mild so I see so issue with that.
If you fit a larger camshaft don't go too big or else driveability will suffer too much if it's primarily a street vehicle.
Yea thats really low.
In my testing there is little to no difference from the fast 90 to the fast 102 at that power level. Both need porting to perform well.
Idk how much a auto soaks up power but my bolt on ls6 ended up at 451whp 423wtq and that was through a 9" and a m6. Various combinations over the years helped get it there. Lowest it ever dyno'd was 399 but that was on the stock ls1 tune.
In my testing there is little to no difference from the fast 90 to the fast 102 at that power level. Both need porting to perform well.
Idk how much a auto soaks up power but my bolt on ls6 ended up at 451whp 423wtq and that was through a 9" and a m6. Various combinations over the years helped get it there. Lowest it ever dyno'd was 399 but that was on the stock ls1 tune.