TH400, GM 8.5 Inch 10-Bolt, Racing Parts

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

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.

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

Learn how to install a side detent shifter in a 1969 Chevy C10.

Read up on GM 10 bolt ring and pinion installation instructions. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear.

How to plan and execute a LS swap into any 1973-1987 Chevy/GMC K10 pickup truck.

Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. We’ll help you determine the correct flexplate for your Chevy engine in this buyer’s guide.

Learn about the power behind the G-body platform and the steps to upgrade a 7.5" bolt rear end to a 8.5" to withstand high horsepower. See how to change the differential fluid and install new gaskets.

Here are some suggestions about which tools can make your life easier while building body panels.

If you're ready to swap an LS engine into you '73-'87 Squarebody Chevy or GMC truck, here's a guide to get you started and a parts list to help you get everything you need for your swap.