4L60E, Chrysler 9-1/4 Inch, Racing Parts

A real-world guide to 4L60 transmission specs, strength, and swap tips.

It in this last part of the race car sponsorship series, Frank and McKenna discuss the importance of following up and continuing to build relationships with sponsors.

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

The Speedway Motors Tech Team created a quick how-to on squaring the front axle of your open wheel race car.

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?

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

In honor of NASCAR's 75th anniversary, we're taking a look at a few remarkable engines that have powered our favorite racers to victory through the years.

On Day Four of Racer Appreciation Week, the Speedway Motors team visited the shop of Speedway Racing Engines for a tour.

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!

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.