Chrysler 8-3/4 Inch Muscle & Classic Car Engine Parts

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

I'm sorry to have to tell you this, but the '64 GTO was not the first muscle car.

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!

Who gets your pick as the best manufacturer from the golden age of the muscle car wars?

Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. Our Mopar flexplate buyer’s guide will help.

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

Estimate horsepower, trap speed, and ET with our drag performance calculator. Use it as a 1/4 mile time estimator or 1/8 mile ET to mph calculator.

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.