Many gearheads buy their cylinder heads fully assembled and don’t have to sweat making sure all of the various parts are set up correctly. But for those that build their own, or that just need to swap ...

For many years camshaft technology was limited not by any lack of knowledge on the part of lobe profilers but by valvespring technology that just wasn't up to stabilizing aggressive lobe designs. But ...

This situation recently occurred when we purchased a set of valve locks from a local engine shop. While assembling the valvesprings and retainers, we noticed that one of the locks was not the same as ...