soccerguy045
Oct 13th, 03, 11:18 PM
I'm pretty sure these are the right heads that came with my stock 350 in my SS. (casting 3986339) They're supposed to be 74cc, and my machinist was like, 'whoa, these are some REALLY good stock heads...typically heads on these motors are 66cc' (or somewhere around there). I was wondering is there anything special about these heads being on there? The engine was/is a 2-bbl. I know putting on a 4-bbl will help a lot (especially with my cam that I believe is a Crane High Energy 272), but was wondering if there will be even more noticeable performance with these heads.