LS swaps are nothing new, but they're still a little mysterious to some of us. Here is an overview of what you will need and what you need to know to swap some modern performance into your muscle car, truck, or hot rod!

LS Swap How-To 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

A guide on how to install a universal wiring harness in a car. Read tips on properly wiring taillights, headlights, gauges, ignition switch, steering column and more.

Universal Wiring Harness Instructions - Installation

In this Tech Tip, John answers a customer question about the Speedway 12 Circuit Wiring Harness.

Speedway Economy 12 Circuit Wiring Harness

Electrical wiring is one of those tasks that enthusiasts dread tackling on their own. We're here to tell you that wiring your project vehicle is something you can do with a little help from your friends at Speedway Motors!

The Best Wiring Solution for Your Hot Rod or Muscle Car Project

Learn how to identfy motors for your LS Swap. In this guide we cover generation 4 small block engines and some of the cheaper options for more power.

Gen 4 LS Engines - Junkyard LS Swap Identification Guide: Part 2

Having a difficult time deciding which racing harness to use? With many options to consider from size to closure type, this article will walk you through how to go about choosing the perfect one for you and your race car. Safety first!

How to Choose a Racing Harness

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

Speedway Motors just added some exciting new options to our line of racing harnesses.

New Racing Safety Products from Speedway Motors: Harnesses

Learn about the wiring of GM HEI Ignition Distributors with our diagrams and guide.  Ensure you are getting the best performance out of your ignition system.

GM HEI Ignition Distributor Wiring Diagrams and Guide

Engine Family Facets

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Chassis Wiring Harnesses 4Th Gen Gm F Body

Transmission Wiring Harnesses 4Th Gen Gm F Body

Engine Wiring Harnesses 4Th Gen Gm F Body

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4th Gen GM F-Body ECM Wiring Harnesses

4th Gen GM F-Body ECM Wiring Harnesses | Speedway Motors

Shop 4th Gen GM F-Body ECM Wiring Harnesses and get Free Shipping on orders over $175 at Speedway Motors.

4th Gen GM F-Body ECM Wiring Harnesses

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FAST 301403 VSS and Auxiliary Shaft Wiring Harness

FAST 301404 Switching Outputs Wiring Harness, Push into Connector

FAST 301400 Power Adder Wiring Harness, Nitrous and Turbo Applications

FiTech 38301-1 Ultra Ram EFI Throttle Body Adapter Harnesses

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