OneFine89Mustang

i know any after market aluminum head will flow drasticly higher then the stock e7', but how much hp increase would you see, say going from the stock heads to a afr street head

hillbilly pony

its really the combination...just replacing heads without intake throttle body etc.. wont give you what your looking for...and for AFR's new you can get a E-cam and GT-40s and a cobra intake, 70mm throttle body used and see TONS of improvement

302army187

most 5.0's see 30 horse power to the tire.

but it all depend's on the build.