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Short Summary: The Richmond Gear 49-0285-1 ring and pinion set is designed for GM 7.5", 7.625", and 7.6" IFS axles.With a 3.90 ratio and thick ring gear profile, this set delivers robust performance for racing, towing, or restoring classic GM muscle cars and trucks.Key Features Application: GM 7.5", 7.625", and 7.6" IFS axles Gear Ratio: 3.90 Thick (Requires 3.08 or numerically lower carrier) Tooth Count: 39 Ring & 10 Pinion Spline Count: 27-spline pinion Material: Heat-treated 8620 steel for performance and longevity Vehicle Compatibility Buick 1973–1975 Apollo 1977–1981 Century, 1976–1985 Electra, 1977–1983 Estate Wagon, 1975–1985 LeSabre, 1977–1979 Opel, 1977–1987 Regal, 1977–1978 Riviera, 1991–1996 Roadmaster, 1975–1979 Skylark Cadillac 1987–1990 Brougham, 1982–1984 DeVille, 1982–1990 Fleetwood Chevrolet 1985–2005 Astro, 1995–2001 Blazer, 1982–2002 Camaro, 1977–1996 Caprice, 2004–2013 Colorado, 1977–1987 El Camino, 1977–1985 & 1994–1996 Impala, 1973–1983 Malibu, 1978–1988 Monte Carlo, 1976–1979 Nova GMC 2004–2012 Canyon, 1992–2005 Jimmy, 1982–1990 S15, 1983–1991 S15 Jimmy, 1985–2005 Safari, 1991–2004 Sonoma, 1991 Syclone Hummer 2006–2010 H3, 2009–2010 H3T Isuzu 2003–2008 Ascender, 1981–1995 Pickup, 1991–2002 Rodeo Oldsmobile 1977–1984 98, 1991–1994 & 1996–2004 Bravada, 1977–1984 Custom Cruiser, 1977–1981 & 1985–1987 Cutlass, 1978–1984 Cutlass Calais, 1980–1983 Cutlass Cruiser, 1977–1980 Cutlass Salon, 1977–1984 Cutlass Supreme, 1977–1985 Delta 88, 1976–1979 Omega Pontiac 1975–1986 Bonneville, 1975–1981 Catalina, 1977–2002 Firebird, 1978–1980 Grand Am, 1977–1983 Grand LeMans, 1977–1987 Grand Prix, 1977–1978 Grand Safari, 1977–1981 Laurentian, 1977–1981 LeMans, 1977–1986 Parisienne, 1977–1979 Phoenix, 1976–1977 Ventura Replaces OEM & Aftermarket Part Numbers EXCEL from Richmond: GM75390TK SVL: 10035667 Warranty & Quality Assurance Backed by a 2-year or 100,000-mile warranty, Richmond Gear ring and pinion sets are built to meet the toughest demands of street and off-road applications.Trusted by racers and performance builders, Richmond delivers premium quality gear performance.
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