All right, I really need to better understand cam specs. I have a basic
understanding but I'm sure there some things I just assume in my thinking.
Maybe someone can clarify these specs for me (I'll use a Comp Cam 604 as an
example):
Duration @.050 210/220 : I know 210 is intake and 220 is exhaust.
210 degrees of what?
Is it 210 degrees out of 360?
220 degrees of what?
@.050 = ?
LSA Lobe Separation Angle 112 degrees:
That would be the distance between the top of the intake and exhaust lobe,
which controls the how much time is between the opening and closing of the
valves?
Is that what causes overlap and a lumpy idle?
How is performance affected when the LSA is changed in a cam (going from 112
to 108)?
Lift:
That one is pretty straight forward.
Centerline installation:
I read a cam can be advanced or retarded depending on what centerline it's
installed on. My 604 is installed on a 108 degree centerline. How would a
106 centerline affect performance? How about a 110 centerline?
Thanks all!
James
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