B³ Racing Engines is a professional engine building shop that services all brands of domestic V-8 engines, specializing in Chrysler engines, and more specifically Mopar valvetrains.

The Mopar shaft-style rocker system is arguably the most misunderstood area of the whole engine. The subject of valvetrain geometry is shrouded in mystery and misinformation, ranging from low-quality aftermarket parts suppliers, to well-known performance books, all the way to Chrysler literature and books.

We manufacture custom parts to correct many of the issues associated with this system when used for high performance and racing purposes, and are constantly working on new products and methods to improve upon these engines that have so much untapped potential.

Mopar Rocker Arm Geometry - Part 4