Gen 3 4.8 LR4 Drag Racing LS Swap Parts

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

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

Comparing GM’s LS V8 engine to the high-tech LT V8 engine. Which is better for your performance needs and budget?

Inside GM’s Gen V LT engine family: history, tech, and performance of each LT engine option available.

Heath P. tells his story on how the passion for 'hot rodding' was instilled in him by his grandfather. From driving tractors on their family farm to becoming a Ford family, you are in for a good read.

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.

Estimate horsepower, trap speed, and ET with our drag performance calculator. Use it as a 1/4 mile time estimator or 1/8 mile ET to mph calculator.

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

Check out a gallery of our favorite Chevys and other GM cars and trucks from the 2022 SEMA show!

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!