Eaton Posi Differential 30 Spline 1.29in Axle Shaft Diameter 3.08-3.90 Ratio Rear 8.875in

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; 30 Spline; 1.29 in. Axle Shaft Diameter; 3.08 - 3.90 Ring Gear Pinion Ratio; Rear 8.875 in.; Fitment: 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 1965 Buick Electra Base 1965 Buick Gran Sport Base 1965 Buick LeSabre Base 1965 Buick LeSabre Custom 1965 Buick Riviera Base 1965 Buick Riviera Gran Sport 1965 Buick Skylark Base 1965 Buick Special Base 1965 Buick Special Deluxe 1965 Buick Sportwagon Base 1965 Buick Wildcat Base 1965 Buick Wildcat Custom 1965 Buick Wildcat Deluxe 1965 Chevrolet Bel Air Base 1965 Chevrolet Biscayne Base 1965 Chevrolet Chevelle Base 1965 Chevrolet Chevelle Deluxe 1965 Chevrolet Chevelle SS 1965 Chevrolet Chevy II Base 1965 Chevrolet Chevy II Nova 1965 Chevrolet Chevy II Nova SS 1965 Chevrolet Corvair Base 1965 Chevrolet Corvair Corsa 1965 Chevrolet Corvair Monza 1965 Chevrolet Corvette Base 1965 Chevrolet Impala Base 1965 Chevrolet Impala SS 1965 Chevrolet Malibu Base 1965 Oldsmobile 442 Base 1965 Oldsmobile 98 Base 1965 Oldsmobile 98 Holiday 1965 Oldsmobile Cutlass Base 1965 Oldsmobile Cutlass Holiday 1965 Oldsmobile Delta 88 Base 1965 Oldsmobile Delta 88 Holiday 1965 Oldsmobile Dynamic 88 Base 1965 Oldsmobile Dynamic 88 Holiday 1965 Oldsmobile F85 Base 1965 Oldsmobile F85 Deluxe 1965 Oldsmobile Jetstar 88 Base 1965 Oldsmobile Jetstar 88 Holiday 1965 Oldsmobile Jetstar I Base 1965 Oldsmobile Starfire Base 1965 Oldsmobile Vista Cruiser Base 1965 Oldsmobile Vista Cruiser Custom 1965 Pontiac Bonneville Base 1965 Pontiac Bonneville Safari 1965 Pontiac Catalina 2+2 1965 Pontiac Catalina Base 1965 Pontiac Catalina Safari 1965 Pontiac Catalina Ventura 1965 Pontiac Grand Prix Base 1965 Pontiac GTO Base 1965 Pontiac LeMans Base 1965 Pontiac Star Chief Base 1965 Pontiac Tempest Base 1965 Pontiac Tempest Custom 1965 Pontiac Tempest Safari 1966 Buick Electra Base 1966 Buick Electra Custom 1966 Buick Gran Sport Base 1966 Buick LeSabre Base 1966 Buick LeSabre Custom 1966 Buick Riviera Base 1966 Buick Riviera Gran Sport 1966 Buick Skylark Base 1966 Buick Special Base 1966 Buick Special Deluxe 1966 Buick Sportwagon Base 1966 Buick Sportwagon Custom 1966 Buick Wildcat Base 1966 Buick Wildcat Custom 1966 Buick Wildcat Gran Sport 1966 Chevrolet Bel Air Base 1966 Chevrolet Biscayne Base 1966 Chevrolet Caprice Base 1966 Chevrolet Chevelle Base 1966 Chevrolet Chevelle Deluxe 1966 Chevrolet Chevelle SS 1966 Chevrolet Chevy II Base 1966 Chevrolet Chevy II Nova 1966 Chevrolet Chevy II Nova SS 1966 Chevrolet Corvair Base 1966 Chevrolet Corvair Corsa 1966 Chevrolet Corvair Monza 1966 Chevrolet Corvette Base 1966 Chevrolet Impala Base 1966 Chevrolet Impala SS 1966 Chevrolet Malibu Base 1966 Oldsmobile 442 Base 1966 Oldsmobile 98 Base 1966 Oldsmobile 98 Holiday 1966 Oldsmobile Cutlass Base 1966 Oldsmobile Cutlass Holiday 1966 Oldsmobile Delta 88 Base 1966 Oldsmobile Delta 88 Holiday 1966 Oldsmobile Dynamic 88 Base 1966 Oldsmobile Dynamic 88 Holiday 1966 Oldsmobile F85 Base 1966 Oldsmobile F85 Deluxe 1966 Oldsmobile F85 Holiday 1966 Oldsmobile Jetstar 88 Base 1966 Oldsmobile Jetstar 88 Holiday 1966 Oldsmobile Starfire Base 1966 Oldsmobile Toronado Base 1966 Oldsmobile Toronado Deluxe 1966 Oldsmobile Vista Cruiser Base 1966 Oldsmobile Vista Cruiser Custom 1966 Pontiac Bonneville Base 1966 Pontiac Bonneville Safari 1966 Pontiac Catalina 2+2 1966 Pontiac Catalina Base 1966 Pontiac Catalina Safari 1966 Pontiac Catalina Ventura 1966 Pontiac Grand Prix Base 1966 Pontiac GTO Base 1966 Pontiac LeMans Base 1966 Pontiac Star Chief Base 1966 Pontiac Star Chief Executive 1966 Pontiac Tempest Base 1966 Pontiac Tempest Custom 1966 Pontiac Tempest Safari 1967 Buick Electra Base 1967 Buick Electra Custom 1967 Buick Gran Sport Base 1967 Buick LeSabre Base 1967 Buick LeSabre Custom 1967 Buick Riviera Base 1967 Buick Skylark Base 1967 Buick Special Base 1967 Buick Special Deluxe 1967 Buick Sportwagon Base 1967 Buick Wildcat Base 1967 Buick Wildcat Custom 1967 Chevrolet Bel Air Base 1967 Chevrolet Biscayne Base 1967 Chevrolet Camaro Base 1967 Chevrolet Camaro RS 1967 Chevrolet Camaro SS 1967 Chevrolet Camaro Z28 1967 Chevrolet Caprice Base 1967 Chevrolet Chevelle 300 1967 Chevrolet Chevelle 300 Deluxe 1967 Chevrolet Chevelle Base 1967 Chevrolet Chevelle Concours 1967 Chevrolet Chevelle Deluxe 1967 Chevrolet Chevelle SS 1967 Chevrolet Chevy II Base 1967 Chevrolet Chevy II Nova 1967 Chevrolet Chevy II Nova SS 1967 Chevrolet Corvair Base 1967 Chevrolet Corvair Monza 1967 Chevrolet Corvette Base 1967 Chevrolet Impala Base 1967 Chevrolet Impala SS 1967 Chevrolet Malibu Base 1967 Oldsmobile 442 Base 1967 Oldsmobile 98 Base 1967 Oldsmobile 98 Holiday 1967 Oldsmobile Cutlass Base 1967 Oldsmobile Cutlass Holiday 1967 Oldsmobile Cutlass Turnpike Cruiser 1967 Oldsmobile Cutlass Supreme Base 1967 Oldsmobile Delmont 88 Base 1967 Oldsmobile Delmont 88 Holiday 1967 Oldsmobile Delta 88 Base 1967 Oldsmobile Delta 88 Custom 1967 Oldsmobile Delta 88 Holiday 1967 Oldsmobile F85 Base 1967 Oldsmobile Toronado Base 1967 Oldsmobile Toronado Deluxe 1967 Oldsmobile Vista Cruiser Base 1967 Oldsmobile Vista Cruiser Custom 1967 Pontiac Bonneville Base 1967 Pontiac Bonneville Safari 1967 Pontiac Catalina 2+2 1967 Pontiac Catalina Base 1967 Pontiac Catalina Safari 1967 Pontiac Catalina Ventura 1967 Pontiac Executive Base 1967 Pontiac Executive Safari 1967 Pontiac Firebird 400 1967 Pontiac Firebird Base 1967 Pontiac Firebird HO 1967 Pontiac Firebird Sprint 1967 Pontiac Grand Prix Base 1967 Pontiac GTO Base 1967 Pontiac LeMans Base 1967 Pontiac Tempest Base 1967 Pontiac Tempest Custom 1967 Pontiac Tempest Safari 1968 Buick Electra 225 1968 Buick Electra 225 Custom 1968 Buick GS 350 Base 1968 Buick GS 400 Base 1968 Buick LeSabre Base 1968 Buick LeSabre Custom 1968 Buick Riviera Base 1968 Buick Skylark Base 1968 Buick Skylark Custom 1968 Buick Special Base 1968 Buick Sportwagon Base 1968 Buick Sportwagon Custom 1968 Buick Wildcat Base 1968 Buick Wildcat Custom 1968 Chevrolet Bel Air Base 1968 Chevrolet Biscayne Base 1968 Chevrolet Camaro Base 1968 Chevrolet Camaro RS 1968 Chevrolet Camaro SS 1968 Chevrolet Camaro Z28 1968 Chevrolet Caprice Base 1968 Chevrolet Chevelle 300 1968 Chevrolet Chevelle 300 Deluxe 1968 Chevrolet Chevelle Base 1968 Chevrolet Chevelle Concours 1968 Chevrolet Chevelle Malibu 1968 Chevrolet Chevelle Nomad 1968 Chevrolet Chevelle SS 1968 Chevrolet Chevy II Nova 1968 Chevrolet Corvair 500 1968 Chevrolet Corvair Monza 1968 Chevrolet Corvette Base 1968 Chevrolet Impala Base 1968 Oldsmobile 442 Base 1968 Oldsmobile 98 Base 1968 Oldsmobile Cutlass Base 1968 Oldsmobile Cutlass S 1968 Oldsmobile Cutlass Supreme Base 1968 Oldsmobile Delmont 88 Base 1968 Oldsmobile Delta 88 Base 1968 Oldsmobile Delta 88 Custom 1968 Oldsmobile F85 Base 1968 Oldsmobile Toronado Base 1968 Oldsmobile Toronado Custom 1968 Oldsmobile Vista Cruiser Base 1968 Pontiac Bonneville Base 1968 Pontiac Bonneville Safari 1968 Pontiac Catalina Base 1968 Pontiac Catalina Safari 1968 Pontiac Catalina Ventura 1968 Pontiac Executive Base 1968 Pontiac Executive Safari 1968 Pontiac Firebird 350 1968 Pontiac Firebird 400 1968 Pontiac Firebird Base 1968 Pontiac Firebird Sprint 1968 Pontiac Grand Prix Base 1968 Pontiac GTO Base 1968 Pontiac LeMans Base 1968 Pontiac Tempest Base 1968 Pontiac Tempest Custom 1968 Pontiac Tempest Safari 1969 Buick Electra 225 1969 Buick Electra 225 Custom 1969 Buick GS 350 Base 1969 Buick GS 400 Base 1969 Buick LeSabre Base 1969 Buick LeSabre Custom 1969 Buick Riviera Base 1969 Buick Skylark Base 1969 Buick Skylark Custom 1969 Buick Special Base 1969 Buick Sportwagon Base 1969 Buick Sportwagon Custom 1969 Buick Wildcat Base 1969 Buick Wildcat Custom 1969 Chevrolet Bel Air Base 1969 Chevrolet Biscayne Base 1969 Chevrolet Brookwood Base 1969 Chevrolet Camaro Base 1969 Chevrolet Camaro RS 1969 Chevrolet Camaro SS 1969 Chevrolet Camaro Z28 1969 Chevrolet Caprice Base 1969 Chevrolet Chevelle 300 Deluxe 1969 Chevrolet Chevelle Concours 1969 Chevrolet Chevelle Concours Estate 1969 Chevrolet Chevelle Greenbrier 1969 Chevrolet Chevelle Malibu 1969 Chevrolet Chevelle Nomad 1969 Chevrolet Chevelle SS 1969 Chevrolet Corvair 500 1969 Chevrolet Corvair Monza 1969 Chevrolet Corvette Base 1969 Chevrolet Estate Base 1969 Chevrolet Impala Base 1969 Chevrolet Kingswood Base 1969 Chevrolet Kingswood Estate 1969 Chevrolet Nova Base 1969 Chevrolet Townsman Base 1969 Oldsmobile 442 Base 1969 Oldsmobile 98 Base 1969 Oldsmobile Cutlass Base 1969 Oldsmobile Cutlass Supreme Base 1969 Oldsmobile Delta 88 Base 1969 Oldsmobile Delta 88 Custom 1969 Oldsmobile Delta 88 Royale 1969 Oldsmobile F85 Base 1969 Oldsmobile Toronado Base 1969 Oldsmobile Toronado Custom 1969 Oldsmobile Vista Cruiser Base 1969 Pontiac Bonneville Base 1969 Pontiac Bonneville Safari 1969 Pontiac Catalina Base 1969 Pontiac Catalina Safari 1969 Pontiac Catalina Ventura 1969 Pontiac Executive Base 1969 Pontiac Executive Safari 1969 Pontiac Firebird 350 1969 Pontiac Firebird 350 HO 1969 Pontiac Firebird 400 1969 Pontiac Firebird Base 1969 Pontiac Firebird Sprint 1969 Pontiac Firebird Trans Am 1969 Pontiac Grand Prix Base 1969 Pontiac GTO Base 1969 Pontiac LeMans Base 1969 Pontiac LeMans Safari 1969 Pontiac Tempest Base 1969 Pontiac Tempest Custom 1969 Pontiac Tempest Safari 1970 Buick Electra 225 1970 Buick Electra 225 Custom 1970 Buick Estate Wagon Base 1970 Buick GS Base 1970 Buick GS 455 Base 1970 Buick GS 455 GSX 1970 Buick LeSabre Base 1970 Buick LeSabre Custom 1970 Buick Riviera Base 1970 Buick Skylark 350 1970 Buick Skylark Base 1970 Buick Skylark Custom 1970 Buick Sportwagon Base 1970 Buick Wildcat Custom 1970 Chevrolet Bel Air Base 1970 Chevrolet Biscayne Base 1970 Chevrolet Brookwood Base 1970 Chevrolet Camaro Base 1970 Chevrolet Camaro RS 1970 Chevrolet Camaro SS 1970 Chevrolet Camaro Z28 1970 Chevrolet Caprice Base 1970 Chevrolet Chevelle Base 1970 Chevrolet Chevelle Concours 1970 Chevrolet Chevelle Concours Estate 1970 Chevrolet Chevelle Greenbrier 1970 Chevrolet Chevelle Malibu 1970 Chevrolet Chevelle Nomad 1970 Chevrolet Chevelle SS 1970 Chevrolet Corvette Base 1970 Chevrolet Estate Base 1970 Chevrolet Impala Base 1970 Chevrolet Kingswood Base 1970 Chevrolet Kingswood Estate 1970 Chevrolet Monte Carlo Base 1970 Chevrolet Nova Base 1970 Chevrolet Townsman Base 1970 Oldsmobile 442 Base 1970 Oldsmobile 98 Base 1970 Oldsmobile Cutlass Base 1970 Oldsmobile Cutlass Supreme Base 1970 Oldsmobile Delta 88 Base 1970 Oldsmobile Delta 88 Custom 1970 Oldsmobile Delta 88 Royale 1970 Oldsmobile F85 Base 1970 Oldsmobile Toronado Base 1970 Oldsmobile Toronado Custom 1970 Oldsmobile Vista Cruiser Base 1970 Pontiac Bonneville Base 1970 Pontiac Bonneville Safari 1970 Pontiac Catalina Base 1970 Pontiac Catalina Safari 1970 Pontiac Catalina Ventura 1970 Pontiac Executive Base 1970 Pontiac Executive Safari 1970 Pontiac Firebird Base 1970 Pontiac Firebird Esprit 1970 Pontiac Firebird Formula 1970 Pontiac Firebird Trans Am 1970 Pontiac Grand Prix Base 1970 Pontiac GTO Base 1970 Pontiac GTO The Judge 1970 Pontiac LeMans Base 1970 Pontiac LeMans Safari 1970 Pontiac LeMans Sport 1970 Pontiac Tempest Base 1970 Pontiac Tempest GT 1971 Buick Centurion Base 1971 Buick Electra 225 1971 Buick Electra 225 Custom 1971 Buick Estate Wagon Base 1971 Buick GS Base 1971 Buick GS 455 Base 1971 Buick LeSabre Base 1971 Buick LeSabre Custom 1971 Buick Riviera Base 1971 Buick Riviera Gran Sport 1971 Buick Skylark Base 1971 Buick Skylark Custom 1971 Buick Sportwagon Base 1971 Chevrolet Bel Air Base 1971 Chevrolet Biscayne Base 1971 Chevrolet Brookwood Base 1971 Chevrolet Camaro Base 1971 Chevrolet Camaro RS 1971 Chevrolet Camaro SS 1971 Chevrolet Camaro Z28 1971 Chevrolet Caprice Base 1971 Chevrolet Chevelle Base 1971 Chevrolet Chevelle Concours 1971 Chevrolet Chevelle Concours Estate 1971 Chevrolet Chevelle Greenbrier 1971 Chevrolet Chevelle Malibu 1971 Chevrolet Chevelle Nomad 1971 Chevrolet Chevelle SS 1971 Chevrolet Corvette Base 1971 Chevrolet Impala Base 1971 Chevrolet Kingswood Base 1971 Chevrolet Kingswood Estate 1971 Chevrolet Monte Carlo Base 1971 Chevrolet Nova Base 1971 Chevrolet Townsman Base 1971 Chevrolet Vega Base 1971 Chevrolet Vega Panel 1971 Oldsmobile 442 Base 1971 Oldsmobile 98 Base 1971 Oldsmobile Custom Cruiser Base 1971 Oldsmobile Cutlass Base 1971 Oldsmobile Cutlass S 1971 Oldsmobile Cutlass Supreme Base 1971 Oldsmobile Delta 88 Base 1971 Oldsmobile Delta 88 Custom 1971 Oldsmobile Delta 88 Royale 1971 Oldsmobile F85 Base 1971 Oldsmobile Toronado Base 1971 Oldsmobile Toronado Brougham 1971 Oldsmobile Vista Cruiser Base 1971 Pontiac Bonneville Base 1971 Pontiac Catalina Base 1971 Pontiac Catalina Brougham 1971 Pontiac Catalina Safari 1971 Pontiac Firebird Base 1971 Pontiac Firebird Esprit 1971 Pontiac Firebird Formula 1971 Pontiac Firebird Trans Am 1971 Pontiac Grand Prix Base 1971 Pontiac Grand Safari Base 1971 Pontiac Grandville Base 1971 Pontiac GTO Base 1971 Pontiac GTO The Judge 1971 Pontiac LeMans Base 1971 Pontiac LeMans Sport 1971 Pontiac LeMans T37 1971 Pontiac Ventura Base 1972 Buick Centurion Base 1972 Buick Electra 225 1972 Buick Electra 225 Custom 1972 Buick Estate Wagon Base 1972 Buick GS Base 1972 Buick GS 455 Base 1972 Buick LeSabre Base 1972 Buick LeSabre Custom 1972 Buick Riviera Base 1972 Buick Skylark 350 1972 Buick Skylark Base 1972 Buick Skylark Custom 1972 Buick Sportwagon Base 1972 Chevrolet Bel Air Base 1972 Chevrolet Biscayne Base 1972 Chevrolet Brookwood Base 1972 Chevrolet Camaro Base 1972 Chevrolet Camaro RS 1972 Chevrolet Camaro SS 1972 Chevrolet Camaro Z28 1972 Chevrolet Caprice Base 1972 Chevrolet Chevelle Base 1972 Chevrolet Chevelle Concours 1972 Chevrolet Chevelle Concours Estate 1972 Chevrolet Chevelle Greenbrier 1972 Chevrolet Chevelle Malibu 1972 Chevrolet Chevelle Nomad 1972 Chevrolet Chevelle SS 1972 Chevrolet Corvette Base 1972 Chevrolet Impala Base 1972 Chevrolet Kingswood Base 1972 Chevrolet Kingswood Estate 1972 Chevrolet Monte Carlo Base 1972 Chevrolet Nova Base 1972 Chevrolet Townsman Base 1972 Chevrolet Vega Base 1972 Chevrolet Vega Panel 1972 Oldsmobile 98 Base 1972 Oldsmobile Custom Cruiser Base 1972 Oldsmobile Cutlass Base 1972 Oldsmobile Cutlass Cruiser 1972 Oldsmobile Cutlass S 1972 Oldsmobile Cutlass Supreme Base 1972 Oldsmobile Delta 88 Base 1972 Oldsmobile Delta 88 Royale 1972 Oldsmobile F85 Base 1972 Oldsmobile Toronado Base 1972 Oldsmobile Toronado Brougham 1972 Oldsmobile Vista Cruiser Base 1972 Pontiac Bonneville Base 1972 Pontiac Catalina Base 1972 Pontiac Catalina Brougham 1972 Pontiac Catalina Safari 1972 Pontiac Firebird Base 1972 Pontiac Firebird Esprit 1972 Pontiac Firebird Formula 1972 Pontiac Firebird Trans Am 1972 Pontiac Grand Prix Base 1972 Pontiac Grand Safari Base 1972 Pontiac Grandville Base 1972 Pontiac GTO Base 1972 Pontiac LeMans Base 1972 Pontiac LeMans Luxury 1972 Pontiac LeMans Sport 1972 Pontiac Ventura Base