Fuel injection is here to stay and we delve into the benefits of such retrofit systems for your classic muscle car or street rod in our EFI retrofit buyer's guide!

Choosing an Electronic Fuel Injection Retrofit for Your Street Rod or Muscle Car

Learn how to convert an engine using a Carbureted LS Conversion Kit, along with tips for a smooth install. Read more on the manifold and timing control module, which comes with an MSD ignition control box and wiring harness.

Carbureted LS Intake Conversion Kit

Learn how to hook up a 1-wire alternator on your vehicle. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project.

Why Convert to A One Wire Alternator

Bringing an old Mopar back to life isn't always a breeze. Fortunately, MSD has come up with a solution for those outdated and unreliable points-type ignition systems. Find out how to install a MSD 8386 distributor and MSD 5531 spark plug wires

Ignition Upgrades for Classic Mopar Muscle

Learn about performing an LS Swap in a 1972 Chevelle in this tech article. We'll discuss lessons learned from our Chevelle engine swap using a 500-horse 6.0.

LS Swap Chevelle Guide

Electronic Throttle Harnesses

Electronic Throttle Harnesses | Speedway Motors

Shop Electronic Throttle Harnesses and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. Electronic Throttle Harnesses in-stock with same-day shipping.

Electronic Throttle Harnesses

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Holley 558-418 Gen III HEMI Drive-By-Wire Harness

Holley EFI 558-121 Terminator Stealth 2X4 Main Harness