I am looking into putting the LS6 head and cam conversion kit into my car does anyone know how much rwhp ill pick up and how much of a gain ill get in a 1/4 mile?

 

I am betting probably 40-50 horses more with a good tune. You will not gain that much time in the quarter, maybe 3-5 tenths. Looking at your mod's, the next thing you should buy imo is a stall. What are your 1/4 times now?

 

my buddy and I did the swap in his 01 ss....never had it on the dyno but with manifolds, an slp maf and hypertech(just to raise limiter) everything else stock including the air box it went a best of 12.50@111 but averages 12.60's.....100% stock it ran a best of 13.09 and averaged 13.20's...I'm sure theres more power to be found with a real tune

 

Right now i am at a pretty high elvation but with just a lid and maf i ran a 14.16 at 99.22 mph!!