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.

LS Swap Guide: GM 3 Speed / 4 Speed Parts List

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!

Gen III/IV LS Engine ID Guide

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

How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

We show you how to keep that old GM transmission when swapping in an LS engine. Our LS swap adapter kits make it easy!

How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions

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.

Replacing a G-Body 7.5" Bolt Rear End

Kevin W. walks through each step of installing a new alternator bracket on a 454 Big Block Chevy.

Alternator Bracket Install on a 454 Big Block Chevy

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

Transmission Replacement on a 55 Chevy

Chevy LS engines get Engine Code as Top Category

Engine Family Facets

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Fuel Injector Control Modules 77 79 Gm B Body Gm Chevy Gen 4 V8 Ls

Fuel Injection Systems 77 79 Gm B Body Gm Chevy Gen 4 V8 Ls

Fuel Rails 77 79 Gm B Body Gm Chevy Gen 4 V8 Ls

Fuel Injectors 77 79 Gm B Body Gm Chevy Gen 4 V8 Ls

Engine Control Modules 77 79 Gm B Body Gm Chevy Gen 4 V8 Ls

Popular Parts

77-79 GM B-Body Gen 4 LS Swap Fuel Injection Throttle Body Adapters

77-79 GM B-Body Gen 4 LS Swap Fuel Injection Throttle Body Adapters | Speedway Motors

Shop 77-79 GM B-Body Gen 4 LS Swap Fuel Injection Throttle Body Adapters and get Free Shipping on orders over $175 at Speedway Motors.

77-79 GM B-Body Gen 4 LS Swap Fuel Injection Throttle Body Adapters

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Holley 300-630BK LS Lo-Ram 105mm Throttle Body Adapter, Black

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