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  #10 (permalink)  
Old 07-03-2017, 08:30 PM
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Join Date: May 2006
Location: St. Louisville, Oh
Cobra Make, Engine: A&C 67 427 cobra SB
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I looked that cam up on Elgin's website.
Elgin Industries

Intake opens 3 BTDC and exhaust closes 3 ATDC for only 6 deg of valve overlap.

Intake 3 BTDC to 41 ABDC and 180 + 3 + 41 adds to 224 deg.
Exhaust 47 BBDC to 3 ATDC and 180 + 3 + 47 adds to 230 deg, not the 224 stated.

So the exhaust is running 6 deg more duration than the intake.

I thinking motor homes use bigger cams than that.
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