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EXCEL from Richmond Differential Ring and Pinion - GM75390
EXCEL from Richmond Differential Ring and Pinion - GM75390 - Image 2 EXCEL from Richmond Differential Ring and Pinion - GM75390 - Image 2

EXCEL GM75390 Differential Ring and Pinion

If you're looking for a reliable upgrade to your vehicle's differential, the EXCEL GM75390 Differential Ring and Pinion is a solid choice. Designed specifically for a range of GM vehicles, this part offers OEM quality at an affordable price, ensuring you get the performance you need without breaking the bank.

Why Choose the GM75390?

The GM75390 features a gear ratio of 3.90, making it an excellent option for those who want to enhance their vehicle's acceleration and towing capabilities. Whether you're a fan of classic Chevys or modern GMCs, this differential gear fits a broad lineup of vehicles, ensuring compatibility with your ride.

Fitment

This differential ring and pinion set is compatible with various GM models, including:

  • Buick Apollo (1973-1975)
  • Buick Regal (1977-1987)
  • Chevrolet Camaro (1982-2002)
  • Chevrolet Impala (1977-1985 & 1994-1996)
  • GMC Jimmy (1983-2005)
  • Oldsmobile Cutlass (1977-1981)
  • Pontiac Firebird (1977-2002)

Technical Specifications

  • Ring Gear Diameter: 7.5 inches
  • Ring Gear Tooth Quantity: 39
  • Pinion Gear Tooth Quantity: 10
  • Pinion Spline Count: 27
  • Pinion Shaft Diameter: 1.438 inches
  • Ring Gear Bolt Quantity: 10
  • Cover Bolt Quantity: 10
  • Material: 8620 Steel
  • Differential Case Design Type: GM 7.625
  • Carrier Break: 3.23 and higher
  • Position: Fits both rear and front differentials

Installation Insights

Installing the GM75390 is straightforward for those familiar with differential work. It's a perfect fit for GM 7.5"/7.625" differentials and is designed to work seamlessly with 3.23 ratio carriers and higher. Make sure to have the right tools on hand, and you'll be back on the road with improved performance in no time.

Customer Feedback

Owners of classic Chevy Impalas have noted how the GM75390 significantly improved their vehicle's response and power delivery, especially when towing. One Chevrolet Camaro owner shared, "After installing the GM75390, I noticed a huge difference in acceleration. It feels like a whole new car!"

Important Notes

Before purchasing, please ensure your vehicle meets the compatibility requirements. The GM75390 is designed for specific GM models, and proper fitment is crucial for optimal performance.

California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Buick Apollo 1973-1975 Base
Buick Apollo 1975 SR
Buick Century 1977-1979 Custom
Buick Century 1977, 1980-1981 Base
Buick Century 1977-1979 Special
Buick Century 1978-1981 Sport
Buick Century 1978-1981 Limited
Buick Century 1980-1981 Estate
Buick Commercial Chassis 1991-1996 Base
Buick Electra 1976-1979 225
Buick Electra 1976-1985 Limited
Buick Electra 1978-1985 Park Avenue
Buick Electra 1980-1985 Estate Wagon
Buick Electra 1985 T-Type
Buick Estate Wagon 1977-1983 Base
Buick LeSabre 1975-1978, 1982-1985 Custom
Buick LeSabre 1975-1981 Base
Buick LeSabre 1977 Custom Sport
Buick LeSabre 1978-1981 Sport
Buick LeSabre 1979-1985 Limited
Buick LeSabre 1982 Limited Edition F/E
Buick LeSabre 1985 Collector's Edition
Buick LeSabre 1985 Estate Wagon
Buick Regal 1977 SR
Buick Regal 1977-1987 Base
Buick Regal 1978-1987 Limited
Buick Regal 1978-1982 Sport
Buick Regal 1982 Limited Turbo
Buick Regal 1982-1983 Estate Wagon
Buick Regal 1983-1986 T-Type
Buick Regal 1984-1987 Grand National
Buick Regal 1987 GNX
Buick Riviera 1977-1978 Base
Buick Riviera 1978 LXXV Anniversary Edition
Buick Roadmaster 1991-1995 Estate Wagon
Buick Roadmaster 1992-1995 Base
Buick Roadmaster 1992-1995 Limited
Buick Roadmaster 1996 Estate Wagon Collector's Edition
Buick Roadmaster 1996 Collector's Edition
Buick Roadmaster 1996 Limited Collector's Edition
Buick Skylark 1975-1979 Base
Buick Skylark 1975-1977 SR
Buick Skylark 1976-1979 S
Buick Skylark 1978-1979 Custom
Buick Skylark 1978 Sport
Cadillac Brougham 1987-1990 d'Elegance
Cadillac Brougham 1987-1990 Base
Cadillac DeVille 1982-1984 Base
Cadillac DeVille 1982-1984 Cabriolet
Cadillac DeVille 1982-1984 d'Elegance
Cadillac Fleetwood 1982-1986 Brougham
Cadillac Fleetwood 1982-1990 Base
Cadillac Fleetwood 1982-1986 Brougham d'Elegance
Cadillac Fleetwood 1982-1984 Formal
Cadillac Fleetwood 1985-1989 Brougham Commercial Chassis
Cadillac Fleetwood 1985, 1987-1990 d'Elegance
Cadillac Fleetwood 1985-1987 75
Cadillac Fleetwood 1985-1987 75 Formal
Cadillac Fleetwood 1987-1990 60 Special
Chevrolet Astro 1985-1995 CL
Chevrolet Astro 1985-1995 CS
Chevrolet Astro 1985-2005 Base
Chevrolet Astro 1987-2005 LT
Chevrolet Astro 1996-2005 LS
Chevrolet Blazer 1987-1994 Silverado
Chevrolet Blazer 1987 Custom Deluxe
Chevrolet Blazer 1988-1991 Scottsdale
Chevrolet Blazer 1992-1993 Cheyenne
Chevrolet Blazer 1994 Silverado Sport
Chevrolet Blazer 1994-1999 Base
Chevrolet Blazer 1995-1997 Deluxe
Chevrolet Blazer 1995-2001 LT
Chevrolet Blazer 1996-2001 LS
Chevrolet Blazer 1999-2001 Trailblazer
Chevrolet Blazer 2001 Xtreme
Chevrolet Camaro 1982-1987, 1991-2002 Z28
Chevrolet Camaro 1982 Z28 Indianapolis 500 Pace Car
Chevrolet Camaro 1982-1986 Berlinetta
Chevrolet Camaro 1982-1987 Sport
Chevrolet Camaro 1985-1990 Iroc-Z
Chevrolet Camaro 1987 LT
Chevrolet Camaro 1988, 1993-2002 Base
Chevrolet Camaro 1989-1992, 1996-1997 RS
Chevrolet Camaro 1992 Z28 Heritage Edition
Chevrolet Camaro 1992 RS Heritage Edition
Chevrolet Camaro 1993 Indianapolis 500 Pace Car
Chevrolet Camaro 1996-1998 Lujo
Chevrolet Camaro 1998-2002 Z28 SS
Chevrolet Caprice 1977-1981 Classic Landau
Chevrolet Caprice 1977-1978, 1981-1982 Classic Estate
Chevrolet Caprice 1977-1996 Classic
Chevrolet Caprice 1979 Landau
Chevrolet Caprice 1979-1980 Classic Sport
Chevrolet Caprice 1980-1982, 1985-1992 Base
Chevrolet Caprice 1986-1990 Classic Brougham
Chevrolet Caprice 1987-1990 Classic LS Brougham
Chevrolet Caprice 1991-1993 Classic LTZ
Chevrolet Caprice 1993-1994 Classic LS
Chevrolet Chevelle 1973-1977 Malibu
Chevrolet Chevelle 1973 Malibu Estate
Chevrolet Chevelle 1974-1977 Malibu Classic
Chevrolet Chevelle 1974-1976 Malibu Classic Estate
Chevrolet El Camino 1977-1987 SS
Chevrolet El Camino 1977-1987 Base
Chevrolet El Camino 1977-1978, 1981-1986 Conquista
Chevrolet El Camino 1977 Classic
Chevrolet El Camino 1979-1981 Royal Knight
Chevrolet Impala 1977-1979 Landau
Chevrolet Impala 1977-1985 Base
Chevrolet Impala 1977 Custom
Chevrolet Impala 1979-1980 Sport
Chevrolet Impala 1981-1982 Estate
Chevrolet Impala 1994-1996 SS
Chevrolet K5 Blazer 1983-1986 Silverado
Chevrolet K5 Blazer 1983-1986 Custom
Chevrolet K5 Blazer 1984 Scottsdale
Chevrolet Malibu 1978-1980 Classic Estate
Chevrolet Malibu 1978-1981 Classic Landau
Chevrolet Malibu 1978-1983 Classic
Chevrolet Malibu 1978-1981 Base
Chevrolet Malibu 1979-1980 Estate
Chevrolet Malibu 1979-1980 Classic Sport
Chevrolet Malibu 1979 Landau
Chevrolet Malibu 1979 Police
Chevrolet Malibu 1979-1980 Sport
Chevrolet Monte Carlo 1978-1981 Landau
Chevrolet Monte Carlo 1978, 1980 Sport
Chevrolet Monte Carlo 1979, 1981-1988 Base
Chevrolet Monte Carlo 1983 CL
Chevrolet Monte Carlo 1986-1988 LS
Chevrolet Nova 1976 SS
Chevrolet Nova 1976-1977 Concours
Chevrolet Nova 1976-1978 Police
Chevrolet Nova 1976-1979 Base
Chevrolet Nova 1977-1979 Rally
Chevrolet Nova 1978-1979 Custom
Chevrolet S10 1982-1989 Sport
Chevrolet S10 1982-1990 Durango
Chevrolet S10 1982-1992 Tahoe
Chevrolet S10 1982-2003 Base
Chevrolet S10 1991-1993 Maxi
Chevrolet S10 1991 Baja
Chevrolet S10 1992-1993 EL
Chevrolet S10 1994-1998 SS
Chevrolet S10 1994-2004 LS
Chevrolet S10 1994-2003 ZR2
Chevrolet S10 1999-2003 Xtreme
Chevrolet S10 2002-2004 ZR5
Chevrolet S10 Blazer 1987-1990, 1992 Sport
Chevrolet S10 Blazer 1987-1988, 1990-1994 Tahoe
Chevrolet S10 Blazer 1987-1994 Base
Chevrolet S10 Blazer 1987-1989 High Country
Chevrolet S10 Blazer 1991-1994 Tahoe LT
Chevrolet S10 Blazer 1991-1994 Nevada
Chevrolet S10 Blazer 1994 LT
GMC Jimmy 1983-1985 High Sierra
GMC Jimmy 1983-1990 Sierra Classic
GMC Jimmy 1983-1996, 2005 Base
GMC Jimmy 1986 Silverado
GMC Jimmy 1992-2001 SLE
GMC Jimmy 1992-2001 SLT
GMC Jimmy 1993-2005 SLS
GMC Jimmy 1995-1999, 2001 SL
GMC Jimmy 1998-2000 Envoy
GMC Jimmy 2000-2001 Diamond Edition
GMC S15 1982-1990 Base
GMC S15 1982-1990 Sierra Classic
GMC S15 1982 Sierra Grande
GMC S15 1982-1990 High Sierra
GMC S15 1983, 1986-1988 Gypsy
GMC S15 1987 EL
GMC Safari 1985-1987, 1995-2000 SL
GMC Safari 1985-1989, 1994-1998 SLX
GMC Safari 1985-1989, 1991-2000 SLE
GMC Safari 1985-1989, 1991-1997 Base
GMC Safari 1987-1989, 1991-2000 SLT
GMC Safari 1993 GT
GMC Sonoma 1991-2001 SLE
GMC Sonoma 1991-1993 Base
GMC Sonoma 1992 GT
GMC Sonoma 1993-2004 SLS
GMC Sonoma 1994-2004 SL
GMC Syclone 1991 Base
Hummer H3 2006-2010 Base
Hummer H3 2006-2010 Luxury
Hummer H3 2006-2010 Adventure
Hummer H3 2007-2009 X
Hummer H3 2008-2010 Alpha
Hummer H3 2009 Championship Series
Hummer H3T 2009-2010 Base
Hummer H3T 2009-2010 Alpha
Hummer H3T 2010 Adventure
Isuzu Pickup 1988 1 Ton
Isuzu Pickup 1988 LS
Isuzu Pickup 1988 S
Isuzu Rodeo 1991-1992 XS
Isuzu Rodeo 1991-2002 LS
Isuzu Rodeo 1991-2002 S
Isuzu Rodeo 1999-2002 LSE
Isuzu Rodeo 2001-2002 S V6
Oldsmobile 98 1977-1981 Luxury
Oldsmobile 98 1977-1984 Regency
Oldsmobile 98 1982-1984 Regency Brougham
Oldsmobile Bravada 1991-1994, 1996-2004 Base
Oldsmobile Custom Cruiser 1977-1979 Base
Oldsmobile Cutlass 1977 S
Oldsmobile Cutlass 1977 Colonnade S
Oldsmobile Cutlass 1977-1979 Vista Cruiser
Oldsmobile Cutlass 1977 Colonnade
Oldsmobile Cutlass 1977 442
Oldsmobile Cutlass 1979 Vista Cruiser Brougham
Oldsmobile Cutlass 1980-1981 LS
Oldsmobile Cutlass 1980-1981 Brougham
Oldsmobile Cutlass 1980 Base
Oldsmobile Cutlass 1981 Supreme
Oldsmobile Cutlass Calais 1978-1979 Base
Oldsmobile Cutlass Cruiser 1980-1983 Base
Oldsmobile Cutlass Cruiser 1980-1981 Brougham
Oldsmobile Cutlass Salon 1978-1979 Base
Oldsmobile Cutlass Salon 1978-1979 442
Oldsmobile Cutlass Salon 1978-1979 Brougham
Oldsmobile Cutlass Salon 1979 Hurst
Oldsmobile Delta 88 1977-1985 Royale
Oldsmobile Delta 88 1977-1983 Base
Oldsmobile Delta 88 1980-1985 Royale Brougham
Oldsmobile Delta 88 1980-1981 Holiday
Oldsmobile Delta 88 1984-1985 Royale Brougham LS
Oldsmobile Omega 1976-1979 Brougham
Oldsmobile Omega 1976-1978 SX
Oldsmobile Omega 1976-1977 F85
Oldsmobile Omega 1976-1979 Base
Oldsmobile Omega 1977 Deluxe
Oldsmobile Omega 1978-1979 Brougham LS
Pontiac Firebird 1977-1981, 1989-2002 Formula
Pontiac Firebird 1977-2002 Trans Am
Pontiac Firebird 1977-1981 Esprit
Pontiac Firebird 1977-2002 Base
Pontiac Firebird 1982-1986 S/E
Pontiac Firebird 1989-1992 Trans Am GTA
Pontiac Firebird 1989 Trans Am GTA SE
Pontiac Firebird 1994 Trans Am GT

EXCEL Banner

Who is Excel?

Excel is a brand under Richmond that is best known for its high-quality drivetrain products for the automotive industry. They specialize in creating durable, high-quality differential components used both on the track and on the street. Today, they are the leading brand when it comes to differential components in the market.

Racer’s Brand Of Choice

The company offers premium differential kits and components that are used by many racers everywhere. Their rock-solid design aims to provide maximum performance and safety during extreme and tough driving conditions.

Your Drivetrain Component Experts

For more than 80 years, the company has provided quality aftermarket parts for different industries. It includes the agriculture, construction, marine, and automotive sector. They have a wide range of drivetrain products such as spools and mini spools, transmissions, ring and pinion gear, synthetic gear oils, and transmission fluids. They have a comprehensive list of products and even have parts for vehicles made from the 1940s up to the present.

State-of-the-Art Facility

To ensure that all their products come out the way they designed them, the company utilizes the latest and most advanced equipment available in the market. It allows them to create parts with precision cuts with very minimal tolerances.

Purchase  Excel Products At Vivid Racing

If you are in the market for quality drivetrain components for your vehicle, then Excel is the brand for you. Whether it is a classic car or a modern one, they would have the right set for you. To know more about Excel and what they can offer, visit Vivid Racing and check out their list of products that fit your specific needs.






Installation Instructions

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