3.73 8.5in 10 Bolt GM

The 3.73 8.5in 10 Bolt GM ring and pinion gear set from Richmond is designed for street performance and mild off-road applications on General Motors 8.5-inch 10-bolt rear differentials. This gear set is essential for enhancing your vehicle's power delivery system, effectively translating engine torque to your wheels while ensuring drivability across various RPM ranges.

Richmond's precision-forged pinion and ring gears are manufactured to strict tolerances and heat-treated for durability under load cycling and thermal stress. The 3.73 gear ratio strikes a balance between throttle responsiveness and fuel economy, making it suitable for daily-driven vehicles while retaining enough mechanical advantage for modest towing or light payload work.

This gear set is ideal for owners of GM trucks, SUVs, and muscle cars looking to upgrade from factory ratios or replace worn internals. Proper differential service skills, including backlash adjustment and carrier setup, are required for installation, ensuring optimal performance and longevity of the gear set.