Richmond 4.11 Ratio Ring and Pinion 25 Spline Pinion 8.200" Ring Gear 3 Series - GM 10 Bolt H774003XL Under drive pulleys increase engine

Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use

and other manufacturers to ensure every new product works as well as it looks

the stock HEI falls short

Crank Scraper

Fan Wiring Harness

Richmond 4.11 Ratio Ring and Pinion 25 Spline Pinion 8.200" Ring Gear 3 Series - GM 10 Bolt H774003XL Under drive pulleys increase engineProduct Description: Ring and Pinion 4. 11 Ratio 25 Spline Pinion 3 Series 8. 2 in GM 10 Bolt Richmond Gear is famed for their tough and reliable ring and pinion sets. That same level of reliability and precision is available in their other driveline products, including differentials, racing Transmissions, driveshaft components, and more. Racecars around the world rely on Richmond premium gearsets and Transmissions; your hotrod will run better than