period correct tunnel rams

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TheNovaMan · #1 09-20-2012, 05:19 AM

47 degrees total at 3000rpm!!!

Plowman · #2 09-20-2012, 01:05 PM

47 degrees total at 3000 rpm,possibility distributor retard switch because of 41 degrees at 8000 rpm.

Glenn70 · #3 09-20-2012, 05:27 PM

I talked to Joe over on speedtalk and at the time he raced the chevelle it had an unreal for the day 800" lift camshaft so maybe the added timing at lower engine speeds helped it idle better? All I know is 9:50 ets in 1975 was pretty serious! He musta known sumpthin?

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