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Initial and total timing for 289?
The 289 is 10.5 to 1 with a 284 hyd. cam. I have the initial at 12 and total is 35 degrees at 2500 rpm. Hoping you guys can get me in the ballpark.
Thanks |
DECEMBER 2000 HOT ROD MAGAZINE HAS AN ARTICLE ABOUT POWER TUNING A '68 302 WITHA MILD CRANE CAM, PERFORMER INTAKE, 585 CFM HOLLEY CARB & HEADERS. THEY SET FOUND OPTIMAL INITIAL TIMING TO BE 14 DEGREES ADVANCED WITH THE STOCK POINTS DIUSTRIBUTOR. THE HAYNES MANUAL SAYS 6 DEGREES WITH THE C-CODE 289 & 12 DEGREES WITH 289 H.P. HOPE THAT HELPS.
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Thanks. I'll dig out that H.R.mag.
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Your timing looks pretty good to me.
You won't be able to run quite as much timing as they were in that article, because you have 10.5:1 compression. I'd just keep advanceing your timing till it starts to ping (usually will first start pinging when engine is at full throttle, low RPM, and hot) then back it off a little. I'm running about 14* initial and 36* total. From what I've heard, this is pretty much normal for small block fords. |
Thanks for the info.
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