Quote:
Originally Posted by Marv D
One argument for the 1.6's is the if it goes all the way to .7,, that means the more time it will be at .6 and in the big flow. ![Smilie](http://67-72chevytrucks.com/vboard/images/smilies/smile.gif) The cnc port is nice. My AFR RR220's went to 295 and hung there. Just wouldn't peek over the 300cfm line at all. But they were about 5-7 cfm over advertised,, Like always AFR is well worth the $
Who's shaft rocker system you using? AFR claims the 220's will 'accept' stock stud rockers and that's true. But if you really want the valve train right,, it requires a .45 / .1 offset. I run Crowers 1.55 shaft system on the 220's in the truck and the valve train is rock solid stable. I was surprised the stainless steel rockers wern't heavier and more of a problem with RPM's but it will go 8000 without missing a beat.
|
The springs are set up to go 1.6 and the machinist has told me thats were he wants it . I will be running his logo on the rear fenders next year also. He has told me bring my 1.5 stuff in and he would sale it for me . Crower is good stuff . I want shaft mounted stuff for sure . Trying to keep this a somewhat tame "bracket" motor . At this point im really nervous about all the changes . Really dont want to start from scratch next year , but going to have to to some extent .