Excel Ring & Pinion Gear Set <br>GM 8.5" & 8.625" 10 BoltRatio: 3.42Teeth: 41-12 Applications:1977-96 Buick Full Size1977-91 Blazer (K Series Front)1973-77 Apollo, Regal, Century1971-74 Biscayne1984-87 Grand National1971-75, 77-79 Skylark, GS1970-76 Chevelle1971-96 Chevy Full Size1970-79 Chevy II, Nova1971-81 Camaro, Firebird, TA1971-77 Cutlass1976-78 Electra1973-77 Gran Sport1970-81 GTO, Firebird1973-74 LeSabre1971-89 Olds Full Size1985-88 Olds, Hurst1971-89 Pontiac Full Size1985-88 Hurst Olds1973-75, 77-79 Omega1971-77 Grand Prix, Lemans1971-74, 96-96 Roadmaster1971-77 Ventura, Phoenix1972-81 Z281970-76 Olds F651980-02 C10, C15 (Rear)1980-02 K10, K15 (Rear)1977-87 K10, K20 (Front)1980-96 Suburban (Rear)1977-91 Suburban (Front)1973-76 El Camino1970-96 G10, G20 Van