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1970-96 GM 10 Bolt 8 1/2 Inch Ring and Pinion

Price: $149.99 - $199.99
1970-1976 GM 10 BOLT 8.5" RING & PINION
Item #:
91910
1970-96 GM 10 Bolt 8 1/2 Inch Ring and Pinion
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Many ratios to choose from.

  • 8.50" diameter ring gear
  • 1.625" diameter pinion
  • 10 ring gear bolts
  • 10 cover bolts
  • 30 pinion splines
  • Uses LH thread ring gear bolts - 7/16"-20

Note: When replacing a stock 2.56 (or numerically lower) ratio, the carrier must also be replaced with a 2.73 or higher ratio's carrier to compensate for the difference in ring gear thickness.

  • 91910-373
    Ratio
    3.73:1
    Outside Diameter
    8.500" (8 1/2")
    Shaft Diameter
    1.630"
    Spline Count
    30
    Sold in Quantity
    Set
    Notes
    Inside thickness of ring gear is 1.7"
  • Buick Full Size 1977-1996
  • Buick Electra 1976-1978
  • Regal 1973-1977
  • Century 1973-1977
  • Skylark, GS 1971-1975
  • Skylark, GS 1977-1979
  • Chevy Full Size Car 1971-1996
  • Chevy II 1971-1979
  • Nova 1971-1979
  • Camaro 1971-1981
  • Firebird TA 1971-1981
  • Cutlass 1971-1977
  • El Camino 1971-1977
  • Monte Carlo 1971-1977
  • Impala 1991-1996
  • Olds Full Size 1971-1989
  • Pontiac  Full Size 1971-1989
  • Grand Prix 1971-1977
  • Lemans 1971-1977
  • GTO 1971-1977
  • Ventura 1971-1977
Note: Circle track racing applications require a minimum of 4 qts. of rear end lube. Using less than this amount will lead to immediate pinion bearing failure.
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