COMP Cams GMC C25 Engine Parts

Picking the right camshaft can be a challenge. Use our camshaft selection guide to learn how to select the right cam for your street rod's best performance.

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.

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.

Derek kicks off his 55 Chevy rebuild with a fresh small block.

An LS cam swap can yield big power gains. And, you can do it at home. Here's how...

In this episode of our C10 build series, we swap cams in a junkyard 5.3 and make surprisingly big power.

Speedway Motors announced today the introduction of a new IMCA Modified Spec Racing Engine as they kick off the 2025 race season along with discounts Jan. 27-Feb. 2 to help their customers get ready for race season.

It's alive! Our 1968 C10 truck project is one step closer to our first drive. In this episode, our old truck finally comes to life with a cammed junkyard LS.

Engine Cylinder Numbers

Here's a handy guide to familiarize you with our G-Comp line of performance suspension systems.