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

Check out some cool overhead conversions to the Ford flathead V8 on display in the Museum of American Speed!

Vintage Overhead Valve Conversions for the Ford Flathead

Tim talks about the rare V8-60 engine and the parts we have to offer for one.

Speedway Tech Talk - Ford V8-60 Flathead Parts

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 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

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

Speedway Motors employee Pat O. is back to talk Ford Automatic OverDrive Kickdown brackets and kits.

Ford AOD Transmission Kickdown Kit

Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility.

GM Steering Column Compatibility, Interchange & Repair Guide

Heath P. tells his story on how the passion for 'hot rodding' was instilled in him by his grandfather. From driving tractors on their family farm to becoming a Ford family, you are in for a good read.

For the Love of the Flathead V8

Speedway Motors, a manufacturer, retailer and distributor of high-quality automotive parts and racing products, announced today new products now available on their website.

New Product Spotlight - 4th Quarter 2025 - Parts to Fuel Your Passion

Engine Family Facets

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F-Series Cadillac 425 Automatic Transmission Parts

F-Series Cadillac 425 Automatic Transmission Parts | Speedway Motors

Shop F-Series Cadillac 425 Automatic Transmission Parts and get Free Shipping on orders over $199 at Speedway Motors.

F-Series Cadillac 425 Automatic Transmission Parts

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Products

Mr Gasket Magnetic 15 1/2"-20 Oil Pan Plug