Chrysler 8-1/4 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.

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

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!

Gassers were those wild drag cars from the 60's that featured outrageously tall stances, big unruly powerplants, and huge slicks to propel them down the track. But just how did these insane creations come to be, and where did they go?

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

Engine Cylinder Numbers

Learn how to hook up a 1-wire alternator on your vehicle. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project.