AMC Eagle Muscle & Classic Car Differentials

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

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

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

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.

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.

Learn about GM alternator identification in our guide. We cover GM 3 wire alternators, 1 wire alternators, and externally regulated so you know what to choose.