Originally Posted by
BigErn
Well ya cant say it to yourself, that would be silly.
Id say your pretty much at the limit of a standard head at 420bhp mate. You thinking of feeding the urge for more ponies like?
.........i did 420 @ 26 psi.......the car holds 28..(r/r argument)........thinking about bigger injectors and more boost........but will a cam help..????