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

Transmission Interchange List Chevy, Ford, Mopar V8 Compatibility

In this Tech Tip, a returning customer asks for advice on wiring harnesses for his ’29 Ford roadster project.

Wiring Harnesses for a 1929 Ford

We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. We'll also walk you through choosing the correct parts in order to make this installation a breeze!

Adapting Tremec's Popular T5 5-speed Manual to Ford's Flathead V8 Engine

Wiring of your race car or hot rod can be completed at home with these helpful automotive 12 V wiring tips.

How to Wire a Race Car | DIY Wiring Harness 101

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

Learn about the specs of the V8 Ford Flathead Engine. Check out these Flathead firing order diagrams and torque specifications chart created by the experts.

Ford Flathead V8 Firing Order and Specs

Read how to wire a lightning sprint engine. This detailed account of how to successfully wire an engine will ensure a smooth installation.

How to Wire a Lightning Sprint Engine

Learn how to ID a Ford 8.8 rear end by tag, width, and code. Compare 8.8 vs 9-inch axles, decode gear ratios, and find which Ford models used them.

Ford 8.8 Rear End ID Guide | Widths, Codes & 8.8 vs 9" 

This video is a step-by-step guide on how to properly install a wrap-around 5 point harness seat belt. Joe and Kyle also talk about the benefits of the Speedway Motors 5 point harness seat belt combo.

How to Install a Wrap-Around 5 Point Harness Tech Talk

Engine Family Facets

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Ford 5.4 Modular Engine Wiring Harnesses

Ford 5.4 Modular Engine Wiring Harnesses | Speedway Motors

Shop Ford 5.4 Modular Engine Wiring Harnesses and get Free Shipping on orders over $175 at Speedway Motors.

Ford 5.4 Modular Engine Wiring Harnesses

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Holley EFI 558-113 Ford Modular 2V & 4V Main Harness w/Smart Coils