Correct valvetrain geometry is critical to ensure trouble-free operation of an engine, especially during high-rpm operation. When building a new engine, many people simply reuse the original pushrods ...

The lowly pushrod has been a favorite fall guy for bad engine design. When any cam-in-block mill fails to produce adequate power, rpm, or fuel economy, how the valves are opened comes under scrutiny, ...

Pushrod engines may not be as popular as they used to be, but to paraphrase the old Mark Twain misquote, "The reports of its death are greatly exaggerated." In fact, GM recently announced it was ...

Chevrolet’s small-block V8 has outlived entire automotive trends, surviving turbo crazes, multivalve revolutions, and now the industry’s pivot to electrification. The constant through all of that has ...

Introduced as a successor to the venerable small block Chevy, the LS engine family had a good run. Recently replaced by the fancy, direct-injected, LT-series engine, the LS still reigns supreme in ...

Much of the Dodge's modern success can be attributed to thundering Hemi V8s under the hood of the Challenger, Charger, and other models. Likewise, much of the reason for its floundering sales today is ...

One of the signature design features of traditional small- and big-block Mopar engines was the simple and effective shaft rocker arrangement. With few exceptions, these were minimalistic setups, ...

There are many factors that determine whether or not a pushrod will fit and operate correctly. Unfortunately, there's little information out there showing you how to determine if yours are correct. We ...

This may feel like specialist information, but for serious engine builders and home mechanics with a project themselves, checking the pushrod length may be a pain in the neck, but it’s worth doing.

The Chevrolet Corvette is the last true sports car to use a pushrod V8, and you might not think that's a good thing. After all, overhead-cam engines have been the standard for decades at this point, ...

If you are new to customizing and servicing Harley-Davidsons, the idea of using bolt cutters on your shiny new V-twin engine might be intimidating. But that's exactly what The Motor Company recommends ...