Thread: 1969 390s ??
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Old 09-19-2002, 11:08 PM   #5
DRASTiK
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Join Date: May 2001
Location: Yuma, AZ
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According to the Chilton's for years 69-71, they are both 4bbl, 10.5-1 compression, and the only specs that are different are the spark plugs, idle speed, and the trannys. This book doesn't even mention a 2bbl at all. I dunno, maybe it's a misprint? How much power is expected to be lost to the drivetrain? Is there an average percentage?
There aren't any cam specs in this book. There's only a measurement in degrees of how far the intake valve opens, and they both say "16B" whatever that means.

Last edited by DRASTiK; 09-19-2002 at 11:15 PM..
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