General Motors might be hopping on the variable compression wagon if this patent is any clue.

More than just variable compression, this engine design also features independent compression and expansion ratios.

It's not often you get to see the assembly of a factory-supercharged 840-horsepower Gen-III powerhouse.

This time-lapse video shows the entire assembly process from bare block to running engine with some style.

The correct rocker arm geometry is crucial to making your rocker arms live in high-power, high-cylinder-pressure applications.

Crower makes the process easy with their shaft rocker systems.

The two supercharged engines were put on Westech's engine dyno to see which one reigns supreme.

Will the stellar efficiencies of the Coyote be enough to overcome the brute size of the LS?

Degreeing your cam is an essential part of engine assembly.

It ensures that your valve events are happening exactly when they are supposed to, and you are making maximum horsepower.

MPR Racing Engines builds a Coyote engine ready for big ProCharger boost.

It will battle a built Bow Tie in Horsepower Wars: LS vs. Coyote, Part 2.

These days, to be on the cutting edge of technology, you need to think outside of the box.

These engines definitely do that, and then some, with wild, unconventional designs.

Jason Fenske of Engineering Explained takes a look at the science of carbon buildup in your engine.

Can making full-load pulls to redline help eliminate those deposits, or is it all a wives' tale?

Balancing an engine's rotating assembly is a critical process, key to both performance and longevity.

This video walks you through the process as it happens, for an inside look at balancing a rotating assembly.

A Ford Australia engine, the 4.0-liter DOHC Barra ranged from 207 to 496 horsepower in factory form.

In Aftermarket trim, getting the big straight-six into the four-digit horsepower range is achievable.