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Old 01-28-2011, 10:27 AM
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CobraEd CobraEd is offline
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Join Date: May 2000
Location: Northern VA, VA
Cobra Make, Engine: Classic Roadsters
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Is the crank from a "302" or a newer "5.0". The engine balance is different.

A 302 need 28 oz on the harmonic dampner AND flywheel. The newer 5.0 needs 50 oz on both.

If the engine is smooth in neutral and the vibration only occurs when driving, then it is driveshaft balance (or lack there of) or bad U joints or wrong pinion angle.


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Last edited by CobraEd; 01-28-2011 at 03:35 PM..
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