3.90 Ratio Performance Differential Ring and Pinion for 8.875 (Inch) (12 Bolt)

2570
147237
147238
147239
2572

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!

G888390 Application Notes

  • For GM 8.875" (12 Bolt)
  • Performance Ring and Pinion
  • 3.90 Ratio
  • 3.07 to 3.73 Ratio Carrier

Warranty

2 Years or 100,000 Miles

G888390 Specifications

Cover Bolt Quantity 12
Differential Carrier Break 3.07 to 3.73 Ratio
Differential Case Design Type GM 8.875 Car
Pinion Gear Tooth Quantity 10
Pinion Shaft Diameter 1.625 (Inch)
Pinion Spline Count 30
Ring & Pinion Gear Ratio 3.90
Ring Gear Bolt Quantity 12
Ring Gear Diameter 8.875 (Inch)
Ring Gear Material 8620 Steel
Ring Gear Rotation Standard
Ring Gear Tooth Quantity 39
Taxonomy A LD Differential, LD Differential, LD Differential, LD Differential, LD Differential
Taxonomy B Ring and Pinion, Ring and Pinion, Ring and Pinion, Ring and Pinion, Ring and Pinion
Taxonomy C GM 8.875 Car, GM 8.875 Car, GM 8.875 Car, GM 8.875 Car, GM 8.875 Car
Taxonomy D Rear, Rear, Rear, Rear, Rear
Where to buy

Vehicle Applications

  • 1971 – 1972 Buick Centurion
  • 1965 – 1972 Buick Electra
  • 1971 – 1972 Buick Estate Wagon
  • 1970 – 1972 Buick GS
  • 1968 – 1969 Buick GS 350
  • 1968 – 1969 Buick GS 400
  • 1970 – 1972 Buick GS 455
  • 1965 – 1967 Buick Gran Sport
  • 1971 – 1972 Buick LeSabre
  • 1971 – 1972 Buick Skylark
  • 1965 – 1969 Buick Special
  • 1964 – 1972 Buick Sportwagon
  • 1965 – 1970 Chevrolet Bel Air
  • 1967 – 1972 Chevrolet Camaro
  • 1966 – 1972 Chevrolet Caprice
  • 1964 – 1973 Chevrolet Chevelle
  • 1965 – 1968 Chevrolet Chevy II
  • 1965 – 1972 Chevrolet El Camino
  • 1965 – 1972 Chevrolet Impala
  • 1965 – 1967 Chevrolet Malibu
  • 1970 – 1972 Chevrolet Monte Carlo
  • 1969 – 1972 Chevrolet Nova
  • 1970 – 1972 Ford Royal
  • 1971 – 1972 GMC Sprint
  • 1971 Oldsmobile 442
  • 1965 – 1972 Oldsmobile 98
  • 1971 – 1972 Oldsmobile Cutlass
  • 1971 – 1972 Oldsmobile Cutlass Supreme
  • 1967 – 1968 Oldsmobile Delmont 88
  • 1965 – 1972 Oldsmobile Delta 88
  • 1965 – 1972 Oldsmobile F85
  • 1965 – 1966 Oldsmobile Jetstar 88
  • 1965 Oldsmobile Jetstar I
  • 1965 – 1966 Oldsmobile Starfire
  • 1967 – 1972 Oldsmobile Vista Cruiser
  • 1965 – 1971 Pontiac Acadian
  • 1965 – 1969 Pontiac Beaumont
  • 1965 – 1972 Pontiac Bonneville
  • 1965 – 1972 Pontiac Catalina
  • 1967 – 1970 Pontiac Executive
  • 1967 – 1972 Pontiac Firebird
  • 1965 – 1972 Pontiac GTO
  • 1970 – 1972 Pontiac Grand Prix
  • 1971 – 1972 Pontiac Grand Safari
  • 1971 – 1972 Pontiac Grandville
  • 1965 – 1972 Pontiac Laurentian
  • 1965 – 1972 Pontiac LeMans
  • 1965 – 1972 Pontiac Parisienne
  • 1965 – 1970 Pontiac Strato-Chief
  • 1970 Pontiac Tempest
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov