Dirt Track Engine Blocks

Explore dirt stock car racing’s key terms, classes, rules, parts, and tips for success in this ultimate guide for new competitors.

Make Your Engine Stand Out with These Engine Block Painting Tips

Dirt modified racing delivers high-horsepower, adrenaline-fueled action, learn more about them and their racing classes

The new Steel LS Mock Up Block from Speedway Motors makes it easy to fab mounts and check clearances while LS swapping your car.

Overheating is a major cause of DNFs and damaged engines. We'll go beyond the cooling system for solutions to your overheating issues.

Why the budget-friendly Hobby Stock class is grassroots motorsports at its finest, and perfect for first-time dirt track racers.

Determining your engine's bore and stroke displacement, and more with our easy to use calculators

There's a new spec engine option for the 2025 IMCA Modified season. Here's what you need to know.

Learn proven small block Chevy 383 stroker engine build combos from 400-600 HP to power your next build

What is the difference between 305, 360, and 410 sprint cars? From engines and horsepower to speed, cost, and racing series, both winged and wingless – we the racing experts from Speedway Motors break it down.