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How do you set valves on a 1955 331 engine - DeVille Cadillac Cars & Trucks

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Engine cold, you set the Intake valve clearance at .0005 to .0025
(.0005 = 5 ten-thousands, or also said as 1/2 thousandths.
.0025 = 2 and a half thousandths)

Set the Exhaust at .001 to .0025
(1 thousandths, to 2 and a half thousandths)

Use a feeler gauge. The Firing Order is just like a Chevy. 1-8-4-3-6-5-7-2
Adjust these mechanical tappets, just like you would for any Chevy engine with mechanical tappets.

Posted on Sep 30, 2009

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