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By famdoc3 - 10 Years Ago
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Have an Isky 301 cam installed straight up in an 80 over 312 with cleaned up G heads and 1.5 rockers. It needs at least 20 degrees of initial timing to begin to run. The Demon chart says for cams >250 degrees of duration that's what I should need but it seems like a lot more than the old 6 degrees recommended for the automatic let alone the 4 degrees for a stick. Is it all about the changes in the gas out there??? MIKE
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By paul2748 - 10 Years Ago
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I run 10 degrees on both of mine. Starts ok and they run good. One has an Edelbrock carb and a somewhat performance cam. The other is a stock 312 (teapot) 56 Bird
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By charliemccraney - 10 Years Ago
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What is the condition of the crank damper?
I don't see a 301 cam in the Isky catalog. What are the specs?
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By lowrider - 10 Years Ago
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I'm running my 292, std w/5cc domed pistons, ported, shaved 0.020 G heads with a good sized CompCam (0.500 lift is all I can recall) and a 3x2 intake at 16*. All mechanical advance running 38* total at 2500 rpm. Starts and runs fine. We used to run most Ford timing at 10* for std. and 12* for auto trans on stock engines. As long as they didn't spark knock the customer & the engine loved it.
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By petew - 10 Years Ago
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I run 12 to 14 degrees of initial timing in my bone stock 57 wagon with a 312 manual transmission and that's with non ethanol gas . I have read that ethanol fuel requires more initial timing to perform properly.
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By famdoc3 - 10 Years Ago
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It's 270 duration on intake and exhaust with a 448 lift on both intake and exhaust. Stock number 301333. Vibration damper is T'bird so can't slip like passenger or truck. Mike
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By charliemccraney - 10 Years Ago
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That's the RPM 300 That's a pretty mild cam and should not require 20 degrees. There is probably something wrong if that is required only to rum. Check ignition, carb, vacuum, etc to find the problem.
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