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8.875" 12 Bolt GM Car

8.875" 12 Bolt GM Car

10-7/8"
12 HOLES
Oval Gasket Pattern


  • RG Diameter 8.875"
  • 12 3/8" X 24 RH Threaded Bolts
  • PINION Diameter 1.625", 30 Spline

    CASE: 3.73 & Down, 3.30 Numerically Higher

    8620 Material Heat-Treated

    Assembly Specifications:

  • Cover Bolt Ft. Lbs. 20
  • Pinion Brg. Preload In. Lbs 20-25
  • Pinion Brg. Preload In. Lbs 10-15 Used
  • Ring Gear Backlash .005-.009
  • Ring Gear Bolt to case Ft. Lbs. 90
  • Side Brg. Caps Ft. Lbs.

GM 8.875" 12 Bolt Applications

Model Year   Model

Year

Chevrolet 65-72   Firebird

GTO

70-72

Chevy II 65-72   Nova

70-72

Chevelle 65-72   Olds F85

68-69

Camaro 67-72  


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12P GM 3.42 R&P
$197.20
SKU: GM12P-342-MG
12P GM 3.42 R&P Learn More

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12P GM 3.55 R&P
$197.20
SKU: GM12P-355-MG
12P GM 3.55 R&P Learn More

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12P GM 3.73 R&P
$197.20
SKU: GM12P-373-MG
12P GM 3.73 R&P Learn More

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12P GM 4.11 R&P
$197.20
SKU: GM12P-411-MG
12P GM 4.11 R&P Learn More

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