GMC Small Block Chevy Transmissions

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

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.

Decode small block Chevy engine suffix codes and block casting numbers with our SBC decoding info guide. Learn how to find and decipher your small block Chevy engine codes quickly and easily!

The 4.8 LS engine is a salvage yard bargain vs the typical 5.3 or 6.0 LS and can still make great power for your LS swap needs.

Identify SBC heads using casting numbers, style tips, and year-by-year guides for your small block Chevy engine projects

Small block and big block Chevy engines were designed with two styles of water pumps, short and long. Before you purchase a new pump, it's important to determine which oneyou have.

The 454 big block Chevy is still a popular build option for when there is no replacement for displacement!

Learn how to successfully upgrade the cooling system for a 400 small block Chevy. Read tips for installing a water pump and auxiliary coolant lines using fittings and fuel hoses.

This new steel bellhousing from Speedway Motors is made for everyone who wants to run three pedals without spending a fortune or relying on a crusty original.

Here's our attempt to do the impossible: pick a favorite GM truck design!