Eaton Posi Differential 17 Spline 3.90 & Down Ring Gear Pinion Ratio Rear 8.2in

The Eaton Posi limited-slip differential prevents wheel slip before it can get started. To do that, carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When torque input increases the clamping load on the clutch packs increases. That causes the chatter-free clutch packs to grab and transfer power to the other wheel. Muscle cars, hot rods and mild off-road vehicles should look to Eatonss limited-slip differential for their traction answers. And the fact is, Eatons Posi units are virtually bullet proof. Eaton Posi™ Differential; 17 Spline; 3.90 And Down Ring Gear Pinion Ratio; Rear 8.2 in.; Fitment: 1955 Buick Century Base 1955 Buick Roadmaster Base 1955 Buick Special Base 1955 Buick Super Base 1955 Chevrolet Bel Air Base 1955 Chevrolet Bel Air Beauville 1955 Chevrolet Bel Air Nomad 1955 Chevrolet Corvette Base 1955 Chevrolet Nomad Base 1955 Chevrolet One-Fifty Series Base 1955 Chevrolet Two-Ten Series Base 1955 Chevrolet Two-Ten Series Del Ray 1955 Oldsmobile 88 Base 1955 Oldsmobile 88 Holiday 1955 Oldsmobile 98 Base 1955 Oldsmobile Deluxe 88 Base 1955 Oldsmobile Starfire Base 1955 Oldsmobile Super 88 Base 1955 Oldsmobile Super 88 Holiday 1955 Pontiac Catalina Base 1955 Pontiac Chieftain Base 1955 Pontiac Chieftain Safari 1955 Pontiac Star Chief Base 1955 Pontiac Star Chief Custom 1956 Buick Century Base 1956 Buick Roadmaster Base 1956 Buick Special Base 1956 Buick Super Base 1956 Chevrolet Bel Air Base 1956 Chevrolet Bel Air Beauville 1956 Chevrolet Bel Air Nomad 1956 Chevrolet Corvette Base 1956 Chevrolet Nomad Base 1956 Chevrolet One-Fifty Series Base 1956 Chevrolet Two-Ten Series Base 1956 Chevrolet Two-Ten Series Del Ray 1956 Oldsmobile 88 Base 1956 Oldsmobile 88 Holiday 1956 Oldsmobile 98 Base 1956 Oldsmobile Deluxe 88 Base 1956 Oldsmobile Starfire Base 1956 Oldsmobile Super 88 Base 1956 Oldsmobile Super 88 Holiday 1956 Pontiac Catalina Base 1956 Pontiac Chieftain Base 1956 Pontiac Star Chief Base 1956 Pontiac Star Chief Custom 1957 Buick Century Base 1957 Buick Roadmaster 75 1957 Buick Roadmaster Base 1957 Buick Special Base 1957 Buick Super Base 1957 Chevrolet Bel Air Base 1957 Chevrolet Bel Air Nomad 1957 Chevrolet Corvette Base 1957 Chevrolet Del Ray Base 1957 Chevrolet Nomad Base 1957 Chevrolet One-Fifty Series Base 1957 Chevrolet Two-Ten Series Base 1957 Chevrolet Two-Ten Series Del Ray 1957 Oldsmobile 88 Base 1957 Oldsmobile 88 Holiday 1957 Oldsmobile 98 Base 1957 Oldsmobile Fiesta Base 1957 Oldsmobile Golden Rocket 88 Base 1957 Oldsmobile Starfire Base 1957 Oldsmobile Starfire Holiday 1957 Oldsmobile Super 88 Base 1957 Oldsmobile Super 88 Holiday 1957 Pontiac Bonneville Base 1957 Pontiac Catalina Base 1957 Pontiac Chieftain Base 1957 Pontiac Chieftain Custom Safari 1957 Pontiac Chieftain Custom Safari Transcontinental 1957 Pontiac Star Chief Base 1957 Pontiac Star Chief Custom 1957 Pontiac Super Chief Base 1958 Buick Century Base 1958 Buick Limited Base 1958 Buick Roadmaster Base 1958 Buick Special Base 1958 Buick Super Base 1958 Chevrolet Bel Air Base 1958 Chevrolet Biscayne Base 1958 Chevrolet Brookwood Base 1958 Chevrolet Corvette Base 1958 Chevrolet Del Ray Base 1958 Chevrolet Impala Base 1958 Chevrolet Nomad Base 1958 Chevrolet Yeoman Base 1958 Oldsmobile 98 Base 1958 Oldsmobile 98 Holiday 1958 Oldsmobile Dynamic 88 Base 1958 Oldsmobile Dynamic 88 Holiday 1958 Oldsmobile Fiesta Base 1958 Oldsmobile Super 88 Base 1958 Oldsmobile Super 88 Holiday 1958 Pontiac Bonneville Base 1958 Pontiac Catalina Base 1958 Pontiac Chieftain Base 1958 Pontiac Chieftain Safari 1958 Pontiac Star Chief Base 1958 Pontiac Star Chief Custom Safari 1958 Pontiac Star Chief Super Deluxe 1958 Pontiac Super Chief Base 1959 Buick Electra 225 1959 Buick Electra Base 1959 Buick Estate Wagon Base 1959 Buick Invicta Base 1959 Buick LeSabre Base 1959 Chevrolet Bel Air Base 1959 Chevrolet Biscayne Base 1959 Chevrolet Brookwood Base 1959 Chevrolet Corvette Base 1959 Chevrolet Impala Base 1959 Chevrolet Kingswood Base 1959 Chevrolet Nomad Base 1959 Chevrolet Parkwood Base 1959 Oldsmobile 98 Base 1959 Oldsmobile 98 Holiday 1959 Oldsmobile Dynamic 88 Base 1959 Oldsmobile Dynamic 88 Holiday 1959 Oldsmobile Fiesta Base 1959 Oldsmobile Super 88 Base 1959 Oldsmobile Super 88 Holiday 1959 Pontiac Bonneville Base 1959 Pontiac Bonneville Custom 1959 Pontiac Bonneville Safari 1959 Pontiac Catalina Base 1959 Pontiac Catalina Safari 1959 Pontiac Star Chief Base 1960 Buick Electra 225 1960 Buick Electra Base 1960 Buick Estate Wagon Base 1960 Buick Invicta Base 1960 Buick LeSabre Base 1960 Chevrolet Bel Air Base 1960 Chevrolet Biscayne Base 1960 Chevrolet Biscayne Fleetmaster 1960 Chevrolet Brookwood Base 1960 Chevrolet Corvair Base 1960 Chevrolet Corvair Deluxe 1960 Chevrolet Corvair Monza 1960 Chevrolet Corvette Base 1960 Chevrolet Impala Base 1960 Chevrolet Kingswood Base 1960 Chevrolet Nomad Base 1960 Chevrolet Parkwood Base 1960 Oldsmobile 98 Base 1960 Oldsmobile 98 Holiday 1960 Oldsmobile Dynamic 88 Base 1960 Oldsmobile Dynamic 88 Holiday 1960 Oldsmobile Fiesta Base 1960 Oldsmobile Super 88 Base 1960 Oldsmobile Super 88 Holiday 1960 Pontiac Bonneville Base 1960 Pontiac Bonneville Custom 1960 Pontiac Bonneville Safari 1960 Pontiac Catalina Base 1960 Pontiac Catalina Safari 1960 Pontiac Star Chief Base 1960 Pontiac Ventura Base 1961 Buick Electra 225 1961 Buick Electra Base 1961 Buick Estate Wagon Base 1961 Buick Invicta Base 1961 Buick LeSabre Base 1961 Buick Skylark Base 1961 Buick Special Base 1961 Buick Special Deluxe 1961 Chevrolet Bel Air Base 1961 Chevrolet Biscayne Base 1961 Chevrolet Brookwood Base 1961 Chevrolet Corvair Base 1961 Chevrolet Corvair Deluxe 1961 Chevrolet Corvair Lakewood 1961 Chevrolet Corvair Monza 1961 Chevrolet Corvette Base 1961 Chevrolet Impala Base 1961 Chevrolet Kingswood Base 1961 Chevrolet Nomad Base 1961 Chevrolet Parkwood Base 1961 Oldsmobile 98 Base 1961 Oldsmobile 98 Holiday 1961 Oldsmobile Classic 98 Base 1961 Oldsmobile Cutlass Base 1961 Oldsmobile Dynamic 88 Base 1961 Oldsmobile Dynamic 88 Holiday 1961 Oldsmobile F85 Base 1961 Oldsmobile Fiesta Base 1961 Oldsmobile Starfire Base 1961 Oldsmobile Super 88 Base 1961 Oldsmobile Super 88 Holiday 1961 Pontiac Bonneville Base 1961 Pontiac Bonneville Custom 1961 Pontiac Bonneville Safari 1961 Pontiac Catalina Base 1961 Pontiac Catalina Safari 1961 Pontiac Star Chief Base 1961 Pontiac Tempest Base 1961 Pontiac Tempest Custom 1961 Pontiac Tempest LeMans 1961 Pontiac Tempest Safari 1961 Pontiac Ventura Base 1962 Buick Electra 225 1962 Buick Electra Base 1962 Buick Estate Wagon Base 1962 Buick Invicta Base 1962 Buick LeSabre Base 1962 Buick Skylark Base 1962 Buick Special Base 1962 Buick Special Deluxe 1962 Buick Wildcat Base 1962 Chevrolet Bel Air Base 1962 Chevrolet Biscayne Base 1962 Chevrolet Chevy II Base 1962 Chevrolet Chevy II Nova 1962 Chevrolet Corvair Base 1962 Chevrolet Corvair Monza 1962 Chevrolet Corvair Monza Spyder 1962 Chevrolet Corvette Base 1962 Chevrolet Impala Base 1962 Oldsmobile 98 Base 1962 Oldsmobile 98 Holiday 1962 Oldsmobile Cutlass Base 1962 Oldsmobile Dynamic 88 Base 1962 Oldsmobile Dynamic 88 Holiday 1962 Oldsmobile F85 Base 1962 Oldsmobile F85 Deluxe 1962 Oldsmobile Fiesta Base 1962 Oldsmobile Jetfire Base 1962 Oldsmobile Starfire Base 1962 Oldsmobile Super 88 Base 1962 Oldsmobile Super 88 Holiday 1962 Pontiac Bonneville Base 1962 Pontiac Bonneville Custom 1962 Pontiac Bonneville Safari 1962 Pontiac Catalina Base 1962 Pontiac Catalina Safari 1962 Pontiac Catalina Ventura 1962 Pontiac Grand Prix Base 1962 Pontiac Star Chief Base 1962 Pontiac Tempest Base 1962 Pontiac Tempest LeMans 1962 Pontiac Tempest Safari 1963 Buick Electra Base 1963 Buick Estate Wagon Base 1963 Buick Invicta Base 1963 Buick LeSabre Base 1963 Buick Riviera Base 1963 Buick Skylark Base 1963 Buick Special Base 1963 Buick Special Deluxe 1963 Buick Wildcat Base 1963 Chevrolet Bel Air Base 1963 Chevrolet Biscayne Base 1963 Chevrolet Chevy II Base 1963 Chevrolet Chevy II Nova 1963 Chevrolet Corvair Base 1963 Chevrolet Corvair Monza 1963 Chevrolet Corvair Monza Spyder 1963 Chevrolet Corvette Base 1963 Chevrolet Impala Base 1963 Oldsmobile 98 Base 1963 Oldsmobile 98 Custom 1963 Oldsmobile 98 Holiday 1963 Oldsmobile Cutlass Base 1963 Oldsmobile Dynamic 88 Base 1963 Oldsmobile Dynamic 88 Holiday 1963 Oldsmobile F85 Base 1963 Oldsmobile F85 Deluxe 1963 Oldsmobile Fiesta Base 1963 Oldsmobile Jetfire Base 1963 Oldsmobile Starfire Base 1963 Oldsmobile Super 88 Base 1963 Oldsmobile Super 88 Holiday 1963 Pontiac Bonneville Base 1963 Pontiac Bonneville Safari 1963 Pontiac Catalina Base 1963 Pontiac Catalina Safari 1963 Pontiac Catalina Ventura 1963 Pontiac Grand Prix Base 1963 Pontiac LeMans Base 1963 Pontiac Star Chief Base 1963 Pontiac Tempest Base 1963 Pontiac Tempest Safari 1964 Buick Electra Base 1964 Buick Estate Wagon Base 1964 Buick LeSabre Base 1964 Buick Riviera Base 1964 Buick Skylark Base 1964 Buick Special Base 1964 Buick Special Deluxe 1964 Buick Sportwagon Base 1964 Buick Wildcat Base 1964 Chevrolet Bel Air Base 1964 Chevrolet Biscayne Base 1964 Chevrolet Chevelle Base 1964 Chevrolet Chevelle SS 1964 Chevrolet Chevy II Base 1964 Chevrolet Chevy II Nova 1964 Chevrolet Chevy II Nova SS 1964 Chevrolet Corvair Base 1964 Chevrolet Corvair Deluxe 1964 Chevrolet Corvair Monza 1964 Chevrolet Corvair Monza Spyder 1964 Chevrolet Corvette Base 1964 Chevrolet Impala Base 1964 Chevrolet Impala SS 1964 Chevrolet Malibu Base 1964 Oldsmobile 442 Base 1964 Oldsmobile 98 Base 1964 Oldsmobile 98 Custom 1964 Oldsmobile 98 Holiday 1964 Oldsmobile Cutlass Base 1964 Oldsmobile Cutlass Holiday 1964 Oldsmobile Dynamic 88 Base 1964 Oldsmobile Dynamic 88 Holiday 1964 Oldsmobile F85 Base 1964 Oldsmobile F85 Deluxe 1964 Oldsmobile Fiesta Base 1964 Oldsmobile Jetstar 88 Base 1964 Oldsmobile Jetstar 88 Holiday 1964 Oldsmobile Jetstar I Base 1964 Oldsmobile Starfire Base 1964 Oldsmobile Super 88 Base 1964 Oldsmobile Super 88 Holiday 1964 Oldsmobile Vista Cruiser Base 1964 Oldsmobile Vista Cruiser Custom 1964 Pontiac Bonneville Base 1964 Pontiac Bonneville Safari 1964 Pontiac Catalina 2+2 1964 Pontiac Catalina Base 1964 Pontiac Catalina Safari 1964 Pontiac Catalina Ventura 1964 Pontiac Grand Prix Base 1964 Pontiac GTO Base 1964 Pontiac LeMans Base 1964 Pontiac Star Chief Base 1964 Pontiac Tempest Base 1964 Pontiac Tempest Custom 1964 Pontiac Tempest Safari