When precession and performance matter mostů choose RGR! call us at:  209.368.2571

More than 20 Years of Excellence in Engine Building, Design, Refurbishing and Machining

Ron Grose Racing and Machine provides superior quality, workmanship and service, combined with top of the line, brand name parts. RGR has the expertise to create extraordinary performance in your competition and street vehicles.

Engines built for NASCAR, drag boats, drag cars, hot rods, off-shore boats and our exclusive one-piece propellers.

Ron Grose Racing started in 1980 as a hobby. It has evolved into a full-blown, state-of-the-art machine shop and after market speed shop. As a professional drag boat and pro-stock drag car racer of more than 25 years, Ron Grose Racing is a world champion and world record holder for more than 7 years in a row. It is with this experience, skill and dedication that RGR has applied to motor building and given them the reputation as top-notched motor builders.



The RGR Difference

  • State-of-the-art facility utilizing the latest machining technology
  • Personal, one-on-one customer service for a long term relationship
  • Full service facility—all work done under one roof
  • Each build is a "custom build" without special costs
  • Superior component designs created from our extensive research & development
  • Patented one-piece forged propeller available
  • Confidential head digitizing, 5-axis CAD/CAM software
  • Engine dyno testing facility
  • Spintron testing facility