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hello all i recently got my ls2 c6 dyno tuned and only made 400whp with a stage 3 turbo cam,cai,and long tube headers no cats full straight pipe. the car is NA will be doing a single turbo kit soon, Is that right??? thought it would make more. the cam specs are 230/235 .615"/.614" 114LSA
thanks in advance
car was tuned on a hub dyno
and is a manual
the car was completely stock before, est 344whp
Last edited by C6ROB3151; Oct 1, 2022 at 08:58 PM.
well maybe its the stock sorry *** LS2 intake holding power back? either swap a set of LS3 heads and intake or at least buy a Fast 92 or 102 intake and NW or Katech TB
With LT headers, MSD atomic intake, Nick Williams TB and a tune I gained right at 50HP to put my 90k mile LS2 at 400RWHP. Since I track the car, I'm not going after any more ponies at this point. I'd like to get to 500HP to run with the Z's but I have some driving improvement to do before I go after the internals and add yet MORE cooling.
I used to have a 2006 GTO. It has the LS2 and a 4-speed auto. I installed a cam with similar specs as yours and long tube headers. Put down exactly 400hp on a Dynojet.
Your car should be reading a little bit higher but not a huge amount more. But different dynos read differently. The main thing is how the car feels and drives. A much better test of gains, would be before and after of quarter mile times and speeds.
Your car going from 344 to 400, a gain of 56 is actually quite good.
I'm not smart enough to know anything by the cam specs but I'd say those power numbers are accurate. I believe when my build had similar mods as you, I put down 409rwhp on a Dynojet roller. As long as your cam is set up for your turbo application, and you have a competent tuner, I wouldn't worry about it.