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

Both 5.3 and 5.7 LS engines are commonly sourced for LS swaps. Here's a look at some differences and similarities as well as a discussion of what might be the best choice for your project.

Is The 5.3 a LS1 | 5.3 vs 5.7 LS | Vortec vs LS ID Guide

Steve provides a step-by-step guide to install the Speedway Motors GM 10-Bolt Polished Finned Aluminum Rear End Cover.

GM 10-Bolt Polished Finned Aluminum Rear End Cover Installation Guide

Decode, ID, and upgrade your GM 12-bolt rear end. Learn axle specs, gear ratios, and best performance parts upgrades.

GM 12-Bolt Rear End Identification & Upgrade Guide

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

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

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Replacing GM Rear End Spherical Bushings

Chevy LS engines get Engine Code as Top Category

Engine Family Facets

707063f6-5cf0-44d1-8e1f-49059e48addf

3fe4cfeb-d42e-4b60-a312-2940d324f962

Valve Spring Compressors Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Valve Spring Retainers Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Camshaft And Lifter Kits Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Camshaft Bearings Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Valve Springs Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Valve Lifters Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Rocker Arm Studs Gm Chevy Gen 4 V8 Ls 5 3 Lmg

Timing Covers Gm Chevy Gen 4 V8 Ls 5 3 Lmg

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GM LMG Timing Cover Bolts

GM LMG Timing Cover Bolts | Speedway Motors

Shop GM LMG Timing Cover Bolts and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. GM LMG Timing Cover Bolts in-stock with same-day shipping.

GM LMG Timing Cover Bolts

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ICT BILLET 551432 Timing Cover Bolt Kit, GM LS, Billet

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