Richmond 3.73 Ratio Ring and Pinion 30 Spline Pinion 8.875" Ring Gear 4 Series - GM 12 Bolt X-Small GM A-Body / F-Body 1964-79

GM A-Body / F-Body 1964-79

Xtreme Anti-Roll

Dual Male Probe (4-1/2 Centers) w/ Handle

oversize polycarbonate

Inside the Digital 6A you'll find a microprocessor that monitors and controls every firing and rev limit

Richmond 3.73 Ratio Ring and Pinion 30 Spline Pinion 8.875" Ring Gear 4 Series - GM 12 Bolt X-Small GM A-Body / F-Body 1964-79Product Description: Ring and Pinion 3. 73 Ratio 30 Spline Pinion 4 Series 8. 875 in GM 12 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