what is a pair of 4v heads from a '98 cobra, with bowl work and pocket porting, fresh guides/springs, with cams(!) worth?
this is sounding better all the time!
quote:Originally posted by JSHTROD: They're supposed to flow 20% more air out of the box than stock heads.
Where did you hear this? 20% more is about 320 cfm.... thats a BIG improvement!