Originally Posted by rube'68'03
DV- the majority of the 416 heads im finding are 64cc. How much of a diffference will that play then the 58cc you suggested?
FWIW, IMO those 416 heads aren't worth playing with. If you have to use OEM heads just get a set of camel humps or Vortecs and angle mill them 1 degree. You'll have your compression and a better runner (especially the exhaust).