Thread: Thoughts on my CAM selection for my 400ci Engine Build
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  #23  
Old 12-05-2021, 07:35 PM
Steve C. Steve C. is offline
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Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
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The Butler cam has 56 degrees overlap and the UD cam has 54 degrees.


Use Advertised Duration Numbers

http://www.wallaceracing.com/overlap-calc.php


When duration is increased and LSA is constant, the valve overlap is increased. When overlap is increased, vacuum is lower, cylinder pressure is reduced.


.

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Last edited by Steve C.; 12-05-2021 at 07:47 PM.
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