Richmond Gear GM 12 Bolt Ring & Pinion Gear Set Ratio: 3.08

GM 12 Bolt Ring & Pinion Gear Set

• Ratio: 3.08
• Teeth: 40-13
• Series: 3

  12-Bolt 8.875" Passenger Car

  • 3 Series Fits 3.07 to 3.73 Ratio Carrier, 4 Series Fits 3.90 and Numerically Higher Carrier.
  • 30 Spline, 1.625 Diameter Pinion.

     

     
  • 1965-72 Bel Air, Caprice, Impala, Chevelle, El Camino, Chevy II,
  • 1967-72 Camaro,
  • 1970-72 Nova, GTO, Firebird,
  • 68-69 Olds F-85

   

  Specifications:

  Axle Type

  GM 12 Bolt

  Cover Bolt Quantity

  12

  Pinion Gear Tooth Quantity

  13

  Pinion Spline Count

  30

  Ring Gear Bolt Quantity

  12

  Ring Gear Diameter

  8.875

  Ring Gear Material

  8620 Steel

  Ring Gear Tooth Quantity

  40

  Ring Gear Rotation

  Standard

  Pinion Shaft Diameter

  1.625 in (41.3 mm)

   

  Ring Gear Bolts

  12

  Pinion Gear Teeth

  13

  Ring Gear Teeth

  40

   

  Ring and Pinion Ratio

  3.08:1

  Differential Carrier Break

  3.07 to 3.73

  Cover Bolts

  12

  Carrier Series

  3