valvetrain

When it comes to rocker arms, you’ll see that they come in three basic flavors: stud-mount, pedestal-mount, and shaft-mount. While there are pros and cons of each rocker arm design, […]

It should go without saying that correct rocker arm specs are something you want to get right the first time. But measuring a rocker arm isn’t as straightforward as you […]

From extreme heat cycles to the constant hammering from pushrods and valves, the rocker arms in your engine’s valvetrain put up with a lot. That also means that they won’t […]

*** Your problem stems from an unfortunate combination of parts—but the good news is that the solution is easy. Here’s the background information. Sometime in the mid 1980s, Chevy changed […]

Work around valvetrains much? Then we don’t need to tell you how important pushrod length is to the health of your engine. And that’s doubly true when you’re talking about […]

I’m going through my small block that’s running a hydraulic roller cam and lifters. The lifters I have seem to work just fine but I’m thinking that I should clean […]

Working on a cylinder head and valvetrain is one of the first introductions many folks have to more advanced engine building techniques. And though that mix of rocker arms, valve […]

For as important as they are, there can be some confusion when it’s time to choose the right valve springs for an engine. That’s probably because there are so many […]

I have a 355 c.i.d. small-block Chevy with a big cam, decent compression, and production iron heads. The cam is an Isky 268/272 at 0.050 with 0.640-inch lift. It has […]

I bought a set of TFS valve springs (PN 16918-16) for my Summit 8702 cam for an LS engine and I realized these springs are only good up to a […]