Performance Differential Ring and Pinion (12 Bolt)

145905
145906
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145908
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Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicle. Our gear sets are made from first-run steel, we never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high horsepower racing engines. Extensive engineering, computer controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in our in-house lab. Motive Gear Performance: What the pros run!

G888514 Application Notes

Warranty

2 Years or 100,000 Miles

G888514 Specifications

App Model GM 8.875 Car
Cover Bolt Quantity 12
Differential Carrier Break 3.90 Ratio and Higher
Differential Case Design Type GM 8.875 Car
Gear Ratio 5.14
Pinion Gear Tooth Quantity 7
Pinion Shaft Diameter 1.625 (Inch)
Pinion Spline Count 30
Ring Gear Bolt Quantity 12
Ring Gear Material 8620 Steel
Ring Gear Outside Diameter 8.875 (Inch)
Ring Gear Rotation Standard
Ring Gear Tooth Quantity 36
Taxonomy A LD Differential, LD Differential, LD Differential
Taxonomy B Ring and Pinion, Ring and Pinion, Ring and Pinion
Taxonomy C Rear, Rear, Rear
Taxonomy D 5.14, 5.14, 5.14
Where to buy

Vehicle Applications

  • 1971 – 1972 Buick Centurion

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Buick Electra

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Buick Estate Wagon

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1970 – 1972 Buick GS

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1968 – 1969 Buick GS 350

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1968 – 1969 Buick GS 400

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1970 – 1972 Buick GS 455

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1967 Buick Gran Sport

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Buick LeSabre

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Buick Skylark

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1969 Buick Special

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1964 – 1972 Buick Sportwagon

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1970 Chevrolet Bel Air

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1967 – 1972 Chevrolet Camaro

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1966 – 1972 Chevrolet Caprice

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1964 – 1973 Chevrolet Chevelle

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1968 Chevrolet Chevy II

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Chevrolet El Camino

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Chevrolet Impala

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1967 Chevrolet Malibu

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1970 – 1972 Chevrolet Monte Carlo

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1969 – 1972 Chevrolet Nova

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 GMC Sprint

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 Oldsmobile 442

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Oldsmobile 98

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Oldsmobile Cutlass

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Oldsmobile Cutlass Supreme

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1967 – 1968 Oldsmobile Delmont 88

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Oldsmobile Delta 88

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Oldsmobile F85

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1966 Oldsmobile Jetstar 88

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 Oldsmobile Jetstar I

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1966 Oldsmobile Starfire

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1967 – 1972 Oldsmobile Vista Cruiser

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1971 Pontiac Acadian

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1969 Pontiac Beaumont

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Pontiac Bonneville

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1972 – 1973 Pontiac Bristol

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Pontiac Catalina

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1967 – 1970 Pontiac Executive

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1967 – 1968 Pontiac Firebird

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1969 Pontiac Firebird
  • 1969 – 1970 Pontiac Firebird

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1970 – 1971 Pontiac Firebird
  • 1971 Pontiac Firebird

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1972 Pontiac Firebird

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Pontiac GTO

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1970 – 1972 Pontiac Grand Prix

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Pontiac Grand Safari

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1971 – 1972 Pontiac Grandville

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Pontiac Laurentian

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Pontiac LeMans

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1972 Pontiac Parisienne

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1965 – 1970 Pontiac Strato-Chief

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance
  • 1970 Pontiac Tempest

    Application notes:

    • For GM 8.875" (12 Bolt)
    • Performance Ring and Pinion
    • 5.14 Ratio
    • Requires a 4.10 and Numerically Higher Ratio Carrier
    • Requires Notched Cross Pin 80-0269-1 For Ring Gear Clearance

Installation

Installation Instructions
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