Speedway Motors, a manufacturer, retailer, and distributor of high-quality automotive parts and racing products, will introduce new racing products in their booth (#4101) at the 2025 PRI Show Dec. 11-13 in Indianapolis, Ind.

Our ZDDP oil list covers conventional, synthetic, and diesel oil zinc content levels to help you determine the best oil for your engine's needs.

Making great horsepower on a budget is the LS engine family’s claim to fame, but just like any other engine, the more power you ask of it the more you’ll need to spend.

Learn the differences between Chevy 2-bolt and 4-bolt main blocks, how to ID them, key years, and whether a 4-bolt is worth it for your build

What is a sway bar and what does it do? Understand how sway bars reduce body roll, improve cornering, and what's best for your car or truck

Estimate horsepower, trap speed, and ET with our drag performance calculator. Use it as a 1/4 mile time estimator or 1/8 mile ET to mph calculator.

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

Speedway Motors, a manufacturer, retailer, and distributor of high-quality automotive parts and racing products, will introduce a number of new products in their booth (#23791) at the 2025 SEMA Show Nov. 4-7 in Las Vegas, Nev.

SoCal's first speed shop, Bell Auto Parts, pioneered the aftermarket with OHV Ford Flatheads, Cragar Mags, and racing helmets in the 1920s racing scene

Explore multi-link rear suspension upgrades, from 3-link to 4-link kits. Find out how a 4-link suspension improves traction and ride quality.

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.

Using the proper U-joint size is critical to correct fitment and operation of your driveline's driveshaft.

Advantages of using Speedway Motors weld-on rear disc brake kit for a Ford 9-Inch rear end. Learn some tips for installation. This kit includes IMCA approved brake calipers.

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

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