Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 2.76 3.42 Ratio Rear 8.875in. The Eaton Posi limited slip differential is the perfect way to control traction in street rods, light duty pickups and all types of tarmac running race cars. Featuring pyrolytic carbon clutches, rebuildable design, net forged gears for added strength and seamless, automatic operation. Tunable via various spring packs [a. k. a. pre loads] Pyrolytic Carbon Clutch Disc Technology Clutch Type Limited Slip Differential Smooth; Automatic Engagement Precision Forged Gears Prevents Wheel Slip Rebuildable This Part Fits: Year Make Model Submodel 1969 1974 Chevrolet Blazer Base 1978 1980 Chevrolet C10 Big Ten 1975 1981 Chevrolet C10 Cheyenne 1981 1982 Chevrolet C10 Custom 1975 1980 Chevrolet C10 Custom Deluxe 1981 Chevrolet C10 Deluxe 1975 1982 Chevrolet C10 Scottsdale 1975 1982 Chevrolet C10 Silverado 1965 1967 Chevrolet C10 Panel Base 1964 1974 Chevrolet C10 Pickup Base 1967 1974 Chevrolet C10 Suburban Base 1981 1982 Chevrolet C10 Suburban Custom 1975 1980 Chevrolet C10 Suburban Custom Deluxe 1981 Chevrolet C10 Suburban Deluxe 1975 1980,1982 Chevrolet C10 Suburban Scottsdale 1975 1980,1982 Chevrolet C10 Suburban Silverado 1975 1981 Chevrolet G10 Beauville 1981 Chevrolet G10 Bonaventure 1975 1981 Chevrolet G10 Chevy Van 1975 1981 Chevrolet G10 Sportvan 1964 1967,1969 1974 Chevrolet G10 Van Base 1968 1974 Chevrolet G10 Van Sportvan 1975 1981 Chevrolet K10 Cheyenne 1981 Chevrolet K10 Custom 1975 1980 Chevrolet K10 Custom Deluxe 1981 Chevrolet K10 Deluxe 1975 1981 Chevrolet K10 Scottsdale 1975 1981 Chevrolet K10 Silverado 1964 1974 Chevrolet K10 Pickup Base 1967 1974 Chevrolet K10 Suburban Base 1981 1982 Chevrolet K10 Suburban Custom 1975 1980 Chevrolet K10 Suburban Custom Deluxe 1981 Chevrolet K10 Suburban Deluxe 1975 1980,1982 Chevrolet K10 Suburban Scottsdale 1975 1977,1979 1980,1982 Chevrolet K10 Suburban Silverado 1976 Chevrolet K5 Blazer Base 1975 1980 Chevrolet K5 Blazer Cheyenne 1981 Chevrolet K5 Blazer Custom 1975,1977 1980 Chevrolet K5 Blazer Custom Deluxe 1981 Chevrolet K5 Blazer Deluxe 1978,1980 1981 Chevrolet K5 Blazer Silverado 1965 1966 Chevrolet Suburban Base 1975 1978 GMC C15 Base 1977 1978 GMC C15 Heavy Half 1975 1978 GMC C15 High Sierra 1977 GMC C15 Indy Hauler 1975 1978 GMC C15 Sierra Classic 1975 1978 GMC C15 Sierra Grande 1978 GMC C15 Street Coupe 1975 1978 GMC C15 Suburban Base 1975 1978 GMC C15 Suburban High Sierra 1975 1978 GMC C15 Suburban Sierra Classic 1975 1978 GMC C15 Suburban Sierra Grande 1967 1974 GMC C15 C1500 Pickup Base 1967 1974 GMC C15 C1500 Suburban Base 1979 1981 GMC C1500 Suburban Base 1979 1981 GMC C1500 Suburban High Sierra 1979 1981 GMC C1500 Suburban Sierra Classic 1979 1981 GMC C1500 Suburban Sierra Grande 1967 GMC C25 C2500 Suburban Base 1975 1978 GMC G15 Rally 1975 1978 GMC G15 Rally STX 1975 1978 GMC G15 Vandura 1967,1970 1971 GMC G15 G1500 Van Base 1968 1969,1971 1974 GMC G15 G1500 Van Rally 1968 1974 GMC G15 G1500 Van Vandura 1979 1981 GMC G1500 Rally 1979 1981 GMC G1500 Rally STX 1979 1981 GMC G1500 Vandura 1970 1981 GMC Jimmy Base 1975 1981 GMC Jimmy High Sierra 1975 1981 GMC Jimmy Sierra Classic 1975 1981 GMC Jimmy Sierra Grande 1978 1981 GMC Jimmy Street Coupe 1975 1978 GMC K15 Base 1975 1978 GMC K15 High Sierra 1977 GMC K15 Indy Hauler 1975 1978 GMC K15 Sierra Classic 1975 1978 GMC K15 Sierra Grande 1975 1978 GMC K15 Suburban Base 1975 1978 GMC K15 Suburban High Sierra 1975 1978 GMC K15 Suburban Sierra Classic 1975 1978 GMC K15 Suburban Sierra Grande 1966 1974 GMC K15 K1500 Pickup Base 1967 1974 GMC K15 K1500 Suburban Base 1979 1982 GMC K1500 Suburban Base 1979 1982 GMC K1500 Suburban High Sierra 1979 1982 GMC K1500 Suburban Sierra Classic 1979 1982 GMC K1500 Suburban Sierra Grande