Modified Battery Testers

Leaking engine cylinders is an important preventative maintenance test to do while racing. Learn the steps to perform this test and how to indicate proper engine tuning.

There are several aspects of a properly relocated battery installation. Our guide will help you ensure that your relocation goes smoothly.

Our automotive battery buyer's guide walks you through the most popular battery types and how to determine what is best for your application, be it street performance, racing, or otherwise.

Selecting the right battery cable wire size for automotive alternator to battery applications is crucial for optimal electrical performance and preventing potential issues. Our guide helps you choose the right wire gauge for any length of wire run.

Speedway Motors employee Jess M. talks about the custom battery tray and cables she built for her '33 Ford.

This article demonstrates how to install a complete Winters quick change kit with additional parts including birdcages, brackets, and calipers for a modified race car.

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

Little is thought of your engine’s starter until it refuses to turn your engine over at the worst possible moment. Today’s powerful mini starters can crank the biggest engines with ease. Learn how in our buyer’s guide.

If you're considering upgrading your classic car's charging system with an generator to alternator conversion, here are some helpful tips.

It is most certainly an important procedure and should be part of a weekly maintenance routine.