Short Summary:
Upgrade your GM 7.5"/7.625" differential with the Motive Gear G975390 Pro Gear Set. Featuring a 3.90 ratio, this performance-built ring & pinion is ideal for high-horsepower street and strip applications requiring increased torque and durability.
Gear Ratio: 3.90
Pinion Gear Tooth Count: 10
Ring Gear Tooth Count: 39
Ring Gear Outside Diameter: 7.5"
Pinion Shaft Diameter: 1.438"
Pinion Spline Count: 27
Cover Bolt Quantity: 10
Ring Gear Material: 9310 Forged Steel
Carrier Break: 3.23 and higher
Ring Gear Rotation: Standard
Buick1973–1975 Apollo - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1981 Century - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1991–1996 Commercial Chassis - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1976–1985 Electra - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1983 Estate Wagon - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1975–1985 LeSabre - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1979 Opel - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1987 Regal - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1978 Riviera - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1991–1996 Roadmaster - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1975–1979 Skylark - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier

Cadillac1987–1990 Brougham - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1982–1984 DeVille - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1982–1990 Fleetwood - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier

Chevrolet1985–2005 Astro - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1995–2001 Blazer - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1982–2002 Camaro - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1996 Caprice - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
2004–2013 Colorado - For GM 7.6" IFS; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1987 El Camino - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1977–1985 Impala - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1994–1996 Impala - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1973–1983 Malibu - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1978–1988 Monte Carlo - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1976–1979 Nova - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1982–2004 S10 - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1983–1994 S10 Blazer - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier

GMC2004–2012 Canyon - For GM 7.6" IFS; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1992–2005 Jimmy - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1982–1990 S15 - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1983–1991 S15 Jimmy - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1985–2005 Safari - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1991–2004 Sonoma - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1991–1991 Syclone - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier

Hummer2006–2010 H3 - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
2009–2010 H3T - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier

Isuzu2003–2008 Ascender - For GM 7.6" IFS; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier
1981–1995 Pickup - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Yukon YG GM7.5-390
USA Standard ZG GM7.5-390
Richmond 69-0050-1
AAM 26013189
Backed by a 2-Year / 100,000-Mile Warranty, Motive Gear products are known for their high-strength construction, quiet performance, and reliability in both stock and performance vehicles. Trusted by racers and professionals worldwide.