cam swap

Q: I have a Chevy Silverado K20 pickup with a 350. The engine is basically stock but is bored .030-inch over, has flat top pistons, and an Edelbrock Performer intake and 600 cfm carburetor. I just put in a COMP Cams Magnum 292 Series cam with new lifters, valve springs, retainers, etc., plus roller rocker arms. My

When the gang at COMP Cams decided to swap the camshaft in a 454-cubic-inch V8 L29 L.4-liter Gen. VI motor with an aggressive profile, they were also forced to upgrade the engine’s valve springs to accommodate it. You can see that cam swap video here. There are three important considerations when choosing valve springs: Matching