PennGrade Engine

Discover the legacy of green motor oil made from Pennsylvania crude. Trusted by racers, builders, and classic car owners for over 60 years.

Crate Engine vs Rebuilt: Is Rebuilding an Engine Worth It? Crate engines are often the more affordable option over a purpose-built engine. Some still think a rebuild is cheaper than a crate engine. But is it? That’s what we’re here to find out.

What is the best engine to swap? Discover the top engine swap options, including LS, Hemi, and Cummins, and find the best engine swap for your build.

Is it OK to put Diesel oil in my gas engine? When is diesel oil bad for my car? Do I need to any additives in addition to diesel oil in my gas engine?

Different ways to lift an engine, including the most common way and the parts needed to do so.

Engine Cylinder Numbers

To celebrate the upcoming 106th running of the Indianaplis 500, here's a look back at a few of the engines that have competed at the Brickyard over the years.

Once you're ready to start selecting valve train components, we have some useful tips and tools that should boost your performance. We discuss proper valve-springs, pushrod length, and rocker arm ratios.

Inside GM’s Gen V LT engine family: history, tech, and performance of each LT engine option available.

In this Tech Tip, John gets to answer a favorite question of ours, what engine should I get?