Cam selection 383 SBC
Currently running a 383 SBC with Vortec heads (2.02 &1.60) with substantial port work.
Comp hydraulic roller: 224/230 @.050 145/151 @.200 112 LSA 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? Help!!! |
Re: Help with cam selection 383 SBC
The cam you say you already have looks a lot like the GM "HOT" cam p/n 12370846. GM installs this cam in their ZZ383 crate motor and it pumps out 425 hp @ 5400.
This cam is one of Dennis Moore's recommendations from his book. Hot cam specs: Duration @ .05: 222/230 Lift w/1.5:1 rockers: 509/528 LSA: 112 |
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