The cam has to be out of the engine to measure that Bruce, my engine is still running, just looking for the "lift". And if I under stand you correctly, you are measuring the diameter at the lob and 90° to that across the flat? This way you would be getting part of the ramp on that measurement, this only indicates a .220" difference. Intake and Exhaust are also different. Proper way to measure the lift on the bench would be with the cam supported between V-blocks you would indicate the high point of the lob and rotate it 180° to find the lift.
I can alway count on my guru over at the VCCA. He found the factory spec for the lift in the resto pack, intake is .2941" and the exhaust is .3118". He also added that the cams very rarely show any wear.
Denny Graham
Sandwich, IL
Last edited by Denny Graham; 07/12/2009 12:26 PM.
