4L60E, GM 9.5 Inch 14-Bolt, Racing Parts

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

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

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

The LS swap is no doubt still going strong, but if you’re planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, you’ll need to pay attention to a few items we discuss in this buyer’s guide.

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

This article demonstrates how to install a complete Winters quick change kit with additional parts including birdcages, brackets, and calipers for a modified race car.

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

Learn the differences between Chevy 2-bolt and 4-bolt main blocks, how to ID them, key years, and whether a 4-bolt is worth it for your build

Learn why the Ford 9-inch rear end is the go-to axle for performance builds, and why this legendary rear end is trusted for high-horsepower applications

In this video, we go through the process of measuring and cutting 9" Ford axles.