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

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

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Replacing GM Rear End Spherical Bushings

Tips and tricks to pull the most from your GM 602/604 platform.

Approved Upgrades for the GM Crate 602/604

Learn how to swap out an LS engine with a modern fuel injected engine into a hot rod for added horsepower, fuel economy, or throttle response. View a list of parts and helpful tips to complete the installation.

LS Swap Guide: GM 3 Speed / 4 Speed Parts List

Steve provides a step-by-step guide to install the Speedway Motors GM 10-Bolt Polished Finned Aluminum Rear End Cover.

GM 10-Bolt Polished Finned Aluminum Rear End Cover Installation Guide

Engine Family Facets

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Fox Body Forth Gen High Feature V6 Parts

Fox Body Forth Gen High Feature V6 Parts | Speedway Motors

Shop Fox Body Forth Gen High Feature V6 Parts and get Free Shipping on orders over $175 at Speedway Motors.

AC Delco R44LTS6 Conventional Spark Plug

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AC Delco R44LTS6 Conventional Spark Plug