Thread: Thumpy Idle
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01-23-2008 08:24 PM #1
Thumpy Idle
Hi guys/gals!
Camshafts are still a bit of a mystery to me.
About what duration do cams make a engine thumpy at idle/poor vaccum?
Is there a general formula/guide I can follow?
Is camshaft duration porportional to vaccum loss?
In a nutshell, what I am asking is, for a street engine how much duration is too much? Or does it come with years of engine building like you guys have?
lol i'm all questions,
thanks in advance,
-CJPCarry On My Wayward Son
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