GM’s 10-bolt rear axle has been around since the 1960s, here’s how to determine if your junkyard find is worth taking home

GM 10-Bolt Identification and Upgrades | 7.625, 7.5, 8.2, 8.5, 8.6

Are you a collector of automotive signs? This is a DIY project where you will learn how to convert a hardwired sign to a plug in. Jess M. explains each step to get the job done!

Converting a Hardwired Sinclair Sign to Plug-In

Decode, ID, and upgrade your GM 12-bolt rear end. Learn axle specs, gear ratios, and best performance parts upgrades.

GM 12-Bolt Rear End Identification & Upgrade Guide

Learn about the wiring of GM HEI Ignition Distributors with our diagrams and guide.  Ensure you are getting the best performance out of your ignition system.

GM HEI Ignition Distributor Wiring Diagrams and Guide

Electrical wiring is one of those tasks that enthusiasts dread tackling on their own. We're here to tell you that wiring your project vehicle is something you can do with a little help from your friends at Speedway Motors!

The Best Wiring Solution for Your Hot Rod or Muscle Car Project

Testing a 2 or 3 wire speed sensor sounds difficult, but these videos show that it actually is quite easy!

Testing 2 and 3 Wire Speed Sensors

Check out this headlight wiring and taillight wiring diagram.

Headlight & Taillight Wiring Diagram

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.

GM Alternator Identification

Why convert to an LED-style headlight or taillight system? Click here to find out how to do it the easy way!

Light Emitting Diodes (LED's)

Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.

Steering Column Wiring Guide

Engine Family Facets

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GM X-Body AMC V8 Gen 2 343 Electrical, Lighting and Wiring Parts

GM X-Body AMC V8 Gen 2 343 Electrical, Lighting and Wiring Parts | Speedway Motors

Shop GM X-Body AMC V8 Gen 2 343 Electrical, Lighting and Wiring Parts and get Free Shipping on orders over $199 at Speedway Motors.

GM X-Body AMC V8 Gen 2 343 Electrical, Lighting and Wiring Parts

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Powermaster 67297 Smooth Look Alternator, 150A, V-belt, 12V, GM