valvetrain

Under extreme, high-RPM operating stress, your engine’s valvetrain is subject to distortion and flex. This can cause havoc with the valve operation, altering its geometry to cause poor performance or worse—engine damage. That’s where valvetrain stabilizers (also known as stud girdles) come in. As part of it’s “Dart University” program, in today’s video the folks

Q: I have a 1976 Toyota FJ-40 with a 350 small block from a 1973 Camaro. The engine has been rebuilt and is stock internally. The heads have a fresh valve job, and the engine features a Holley 650 cfm carburetor on an Edelbrock Torker II intake. I am using the stock four-speed transmission and

From time to time, OnAllCylinders will provide a peek at some of the newest products and deals that can help get your next project on track for less. Check out what’s in our parts bin this week: Running a higher lift cam and beefier valve springs on your GM LS motor? If so, you’ll want

In this video, Billy Godbold, chief cam designer and astrophysicist at COMP Cams, explains how COMP Cams’ conical valve springs help control heat and friction by dampening spring vibrations and provide much longer spring life than cylindrical or even beehive designs. The conical springs are perfect for the racer wanting to run a more-aggressive camshaft, COMP

Valve springs are the highest stressed component in your engine. That’s why companies like COMP Cams and Summit Racing stress the importance of properly handling your valve springs before, during, and after installation. We consulted COMP Cams for some handling tips to ensure maximum spring life.   First, double check to make sure your springs

If the rotating assembly is the heart and soul of your engine, then the camshaft is the brain. The camshaft controls the movement of the entire valvetrain. The right cam will produce excellent power right where you want it, maintain good drivability, create decent vacuum for power brakes, and even deliver the loping idle you

If the rotating assembly is the heart and soul of your engine, then the camshaft is the brain. The camshaft controls the movement of the entire valvetrain, telling the valves when to open and close and allowing your engine to breathe properly. Like the human brain, the camshaft is a highly complex entity and even