Modified Camshafts

Learn how to choose the right valve springs for your camshaft, the differences between single and dual valve springs and when to replace them.

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

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.

Learn how to lower a hot rod by modifying the axles and some history behind early hop ups. This project features a Ford axle with wishbones for a Model A.

Learn a few tips on how to properly mount Modified bodies and some products that will help get your race car body fabrication job done!

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.

An LS cam swap can yield big power gains. And, you can do it at home. Here's how...

In order to be competitive and win, it's important to find the right set up that works for you and your car. Here's some general reminders to remember during set up!

What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.

Picking the right camshaft can be a challenge. Use our camshaft selection guide to learn how to select the right cam for your street rod's best performance.