COMP Cams 1987 GMC R3500 Parts

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A guide to choosing the right camshaft for your engine. See how to install a new LSR roller camshaft while upgrading valve springs and rocker trunnions.

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What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.

Installing 3" Ram Horn Manifolds on a C/10

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