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Old 06-09-2006, 07:18 AM
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Mr70 Mr70 is offline
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Default Re: Camshaft and Dist Values

Chevrolet shows the specs on it as:
.520 intake lift
.520 Ex. lift
316 intake duration
302 Ex. duration
1.70 rocker ratio
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Old 06-12-2006, 05:31 AM
Keith Tedford Keith Tedford is offline
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Default Re: Camshaft and Dist Values

With the clearance set at .024" .028" you get .496" on the intake and .492" on the exhaust. Over the years GM opened up the clearance specs from .020" .024" to the later .024" .028" This affected the power characteristics of the engine especially the bottom end torque output. Tight clearances would help in launching on poor traction tires.
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