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Old 09-24-2005, 11:46 PM
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From thread "383 stroker" 24 Sept 05


re: 383 stroker


Originally Posted by waltnardo
I've installed a 383 stroker in my 1983 Malibu wagon. I don't know how to set the timing. The cam that I have is a comp CS X4 254H - 11 which has a .447 intake & a .462 exhaust. Can anyone tell me what I should set the timing at?

ok You tell us nothing about your set up, only about your cam, and then somebody says 12*, so I guess you mean ignition timing not cam timing.

Nothing like guessing away 60 hp/torque. huh?

12* initial is a good starting place , considering your altitude and that we don't know anything about your set up.

centrifugal should start at 1000 rpm and come in about 24* at 3000 rpm, lower will probably be too aggressive.

vacuum should do about 12*, variable as per 60 mph cruise vacuum minus 2. recalibrate for highway load.

Cam timing should be cam company spec, dynamic cranking compression to maximum then advanced 2-4*.

Good luck, you need it.

Last edited by xntrik : Today at 12:39 AM.
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