AC Delco Engine

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.

Learn all about what is a 602 crate motor and what it takes to run this small block Chevy in your race or street car.

Learn all about what is a 604 crate motor and what it takes to run this small block Chevy in your race or street car.

While everyone is looking for a 6.0 LS, don’t count out the original 5.7 LS1 engine for your next LS swap performance build

Overheating is a major cause of DNFs and damaged engines. We'll go beyond the cooling system for solutions to your overheating issues.

There's a right and wrong way to run a two-barrel carburetor on your vintage engine. Check out this guide about how to select the correct carburetor for your Flathead or vintage engine.

Follow this detailed guide on installing a FiTech EFI system in a '67 Chevelle. Learn helpful tips along the way including how to route the blue trigger wire away from the coil and ignition system.

Speedway Product Manager Jeff K. talks about the old failing "Dealer Air" in his '46 Ford Sedan Delivery we've become familiar with, and the replacement unit from Vintage Air he got from Speedway Motors.

There is a lot to consider when choosing the proper spark plug for your engine's intended application and power level. Let us take some of the guesswork out with our spark plug buyer's guide.

The dyno at the Speedway Motors Racing Engine shop is always humming. We set up a camera in the cell to catch a few of the engines that have passed through the door recently.