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.  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 .