Hve a good running cam only car (mods in sig) and thinking about going to a set of CNC TSP LS6 heads. I figure about an approx 40rwhp over the junk stock heads I have now, but what will that translate into 1/4 times? Car runs 12.0's right now as it sits. Was thinking about a Yank 3600 too possibly. car made 365rwph on mustng dyno.

 

i don't know that you'd make 40whp more simply by bolting those heads on. maybe 20-25. and i'd guess at most you'll pick up 3 mph. if the car runs 12.0 now...to get an estimimate i'd drop a tenth for every mph picked up. so maybe 11.7ish. i'd certainly invest in a larger stall (3600+), better tires, and a better catback.

 

The stall will help you 1/4 mile more than the heads would. Depending on your current 60 time, with heads and a 3600 stall, you could be down around 11.4's

 

thanks for the info