Speedway Motors Mercury Cyclone TH400 Parts

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

Mike's Cyclone was a rare bird when it left the factory, and it's led an amazing life since then! Mike's goal is to go 200 at Bonneville in a car that has done Hot Rod Power Tour and has logged a ton of street miles...

Speedway Motors announced today they will celebrate customers and their cars during Customer Appreciation Week, August 28-September 1, with customer stories, a build list giveaway and Buy Now, Save Later promotion.

Learn how to install a side detent shifter in a 1969 Chevy C10.

Speedway Motors announced today a list of new products that will be debuted Nov. 2-6 during SEMA360.

Here's another in our ongoing series featuring our customers' cars and projects. Chris's Willys coupe is the gasser that he's always wanted, and it's a knockout.

Speedway Motors, a manufacturer, retailer and distributor of high-quality automotive parts and racing products, announced today a list of new products that will be debuted Nov. 2-5 in Las Vegas, Nev. at the 2021 SEMA Show.

Jason Martin fro EMi visits the Shock Technologies department of Speedway Motors, and sheds some light on just what happens when you send in your shocks for tuning.

Speedway Motors announced today the introduction of a new IMCA Modified Spec Racing Engine as they kick off the 2025 race season along with discounts Jan. 27-Feb. 2 to help their customers get ready for race season.

The dyno at the Speedway Motors Racing Engine shop is always humming. We set up a camera in the cell to catch a few of the engines that have passed through the door recently.