1977 GMC G25 Powerglide Transmission Parts

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

Check out these tips on T-5 transmissions!

Learn how Zach replaces a transmission and breakaway converter in his 55 Chevy, with some helpful tips along the way.

Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility.

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.

Steve takes us along as he centers the 525 manual steering gear he is using for his Laguna.

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.

We help determine what are the best 10-spline quick change gear ratios for your street or racing needs