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Old 02-09-2013, 12:38 PM
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The intake valve does not close until after BDC. even on a stock cam.
The bigger the cam duration the latter the intake valve closes past BDC.

set the timing using a timing light. 34 to 36deg BTDC @ max mechanical advance.
The best initial timing will depend on the cam used in the motor.

generally 12 deg +/- for a stock OEM camshaft. You cannot set it by ear.

Did you line up the cam gear timing dot when installing the cam?
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