Chrysler 8-3/4 Inch Street Engine Parts

Determining your engine's bore and stroke displacement, and more with our easy to use calculators

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

Fuel injection is here to stay and we delve into the benefits of such retrofit systems for your classic muscle car or street rod in our EFI retrofit buyer's guide!

In this Tech Tip, John responds to a customer looking to upgrade the 8” stock differential in his Cougar to a 9” open diff.

Decode, ID, and upgrade your GM 12-bolt rear end. Learn axle specs, gear ratios, and best performance parts upgrades.

Engine Cylinder Numbers

An engine guide that will help determine if an internal or external balanced flexplate is needed for your engine.

The '21 season marks the 70th year of NHRA drag racing. Here's look at a few great drag cars from that 70 year history from the Museum of American Speed.

Learn what throttle and kickdown cables do, how to install them, and tips for troubleshooting issues like broken or stuck cables.