Chrysler 8-1/4 Inch Truck Engine Parts

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

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

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.

Wondering what a stroker motor is and how to build one? Speedway Motors has the answers with this stroker motor build guide.

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

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

In this Tech Tip, John answers a customer concerns about adding additional drop to his 1960-1972 Chevy truck.

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