Currently running a 383 SBC with Vortec heads (2.02 &1.60) with substantial port work.
Comp hydraulic roller:
3.0 overlap @.050
54. overlap @seat
10.0 static CR.
Stainless marine exhaust. This motor pulls hard to 5400rpm, idles well at 800rpm in neutral and idles decent at 650rpm in gear. No Reversion issues.
I've built a new 383:
AFR 195 heads
10.2 static CR.
My question is cam selection. I want a "little" more cam, but still want decent driveability and not worry about reversion.
"Ultradyne-Bullet" cams have several grind profiles that are a step up from the Comp profile. I can have these ground on any LSA. How much is too much duration @.200 or too little?
How much overlap can my exhaust handle?