Comp Cams steel billet 23-000-9 mechanical roller. Bought new in 2006 but less than 100 runs.

Valve Adjustment .020 Intake/Exhaust (approx .017 cold)
Lift Intake/Exhaust .706/.676
Duration @ .020 Intake/Exhaust 318/328 (285/290 @ 0.050)

I don't know the spring pressures. Always used Castrol Synthetic Syntec 20w50 oil. Might have been 5w50 - can't remember right now.

The grooving is actually worse on the sides than on top. Most lobes are affected. Called Comp Cams and they were zero help.

Any thoughts?


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Last edited by markz528; 12/10/19 06:23 PM.
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