There you go...so many of you are stuck on headswaps. Use your cash to swap to the PI intake and aftermarket cams...very nearly the same gains as the headswap and you save money in the long run.TGJ said:The PI heads have very little to do with the Power Gain. The newer motors have more aggressive cams, better intake and a more aggressive tune. The biggest choke in the NPI motor was the intake, not the heads. People who have done just the PI Cam and PI intake swaps ARE MAKING the same RWHP as a 99+ car is with the same mods. NPI cars that do the PI headswap as well see a increase in Compression which makes another 10 - 15 RWHP than a 99+ car does.
Don't forget those dyno numbers you may be refering to are on a Mustang Dyno.01Steeda said:heck I know of a car with aftermarket cams that isnt making what I was with just pullies and exhaust.
See sig and garage for my mods.