Quote:
Originally Posted by bigblockv6
A 650 cfm sounds good but I would consider a cam upgrade to complement it. I do have performance specs for a regrind of your stock cam, here they are as well as anyone else that's interested  |
The valve springs used with this cam are longer than stock due to more lift in the cam. My machinist used Competition Cams #972-16 valve springs that actually fit Ford 390 applications.