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.
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
1973-1975	Buick	Apollo	Base
1975	Buick	Apollo	SR
1988-1996	Buick	Century	Custom
1988-1989	Buick	Century	Estate Wagon
1988-1993,1996	Buick	Century	Limited
1991-1996	Buick	Century	Special
1991-1996	Buick	Commercial Chassis	Base
1988-1989	Buick	Electra	Estate Wagon
1988-1990	Buick	Electra	Limited
1988-1990	Buick	Electra	Park Avenue
1989-1990	Buick	Electra	Park Avenue Ultra
1988-1990	Buick	Electra	T-Type
1988-1991	Buick	LeSabre	Base
1988-1996	Buick	LeSabre	Custom
1988-1990	Buick	LeSabre	Estate Wagon
1988-1996	Buick	LeSabre	Limited
1991-1996	Buick	Park Avenue	Base
1991-1996	Buick	Park Avenue	Ultra
2004-2007	Buick	Rainier	CXL
2004-2005	Buick	Rainier	CXL Plus
1988-1991	Buick	Reatta	Base
1973-1987	Buick	Regal	Base
1988-1996	Buick	Regal	Custom
1982-1983	Buick	Regal	Estate Wagon
1987	Buick	Regal	GNX
1989-1996	Buick	Regal	Gran Sport
1984-1987	Buick	Regal	Grand National
1978-1996	Buick	Regal	Limited
1982	Buick	Regal	Limited Turbo
1996	Buick	Regal	Olympic Gold Edition
1978-1982	Buick	Regal	Sport
1976-1977	Buick	Regal	SR
1983-1986	Buick	Regal	T-Type
1975-1978,1995-1996	Buick	Riviera	Base
1975	Buick	Riviera	GS
1988-1993	Buick	Riviera	Luxury
1978	Buick	Riviera	LXXV Anniversary Edition
1976	Buick	Riviera	Sport
1976	Buick	Riviera	SR
1988-1989	Buick	Riviera	T-Type
1992-1995	Buick	Roadmaster	Base
1996	Buick	Roadmaster	Collector's Edition
1991-1995	Buick	Roadmaster	Estate Wagon
1996	Buick	Roadmaster	Estate Wagon Collector's Edition
1992-1995	Buick	Roadmaster	Limited
1996	Buick	Roadmaster	Limited Collector's Edition
1988-1989	Buick	Skyhawk	Custom
1988-1989	Buick	Skyhawk	SE
1970,1972	Buick	Skylark	350
1970-1972,1975-1979,1990-1991	Buick	Skylark	Base
1970-1972,1978-1979,1988-1996	Buick	Skylark	Custom
1990-1996	Buick	Skylark	Gran Sport
1988-1989,1993-1996	Buick	Skylark	Limited
1990-1991	Buick	Skylark	Luxury Edition
1996	Buick	Skylark	Olympic Gold Edition
1976-1979	Buick	Skylark	S
1978	Buick	Skylark	Sport
1975-1977	Buick	Skylark	SR
1999-2000,2002-2013	Cadillac	Escalade	Base
2009-2013	Cadillac	Escalade	Hybrid
2010-2013	Cadillac	Escalade	Hybrid Platinum
2011-2013	Cadillac	Escalade	Luxury
2008-2013	Cadillac	Escalade	Platinum
2011-2013	Cadillac	Escalade	Premium
2003-2013	Cadillac	Escalade ESV	Base
2011-2013	Cadillac	Escalade ESV	Luxury
2008-2013	Cadillac	Escalade ESV	Platinum
2011-2013	Cadillac	Escalade ESV	Premium
2002-2009	Cadillac	Escalade EXT	Base
2013	Chevrolet	Avalanche	Black Diamond LS
2013	Chevrolet	Avalanche	Black Diamond LT
2013	Chevrolet	Avalanche	Black Diamond LTZ
2007-2012	Chevrolet	Avalanche	LS
2007-2012	Chevrolet	Avalanche	LT
2007-2012	Chevrolet	Avalanche	LTZ
2002-2005	Chevrolet	Avalanche 1500	Base
2005-2006	Chevrolet	Avalanche 1500	LS
2005-2006	Chevrolet	Avalanche 1500	LT
2002-2003	Chevrolet	Avalanche 1500	North Face
2002-2003	Chevrolet	Avalanche 1500	On Road Edition
2003	Chevrolet	Avalanche 1500	WBH
2004-2006	Chevrolet	Avalanche 1500	Z66
2002-2006	Chevrolet	Avalanche 1500	Z71
1988-1996	Chevrolet	Beretta	Base
1989-1993	Chevrolet	Beretta	GT
1990-1993	Chevrolet	Beretta	GTZ
1990	Chevrolet	Beretta	Indianapolis 500 Pace Car
1994-1996	Chevrolet	Beretta	Z26
1995-1999	Chevrolet	Blazer	Base
1996-2000	Chevrolet	Blazer	LS
1995-2000	Chevrolet	Blazer	LT
1999-2000	Chevrolet	Blazer	Trailblazer
1990-1993	Chevrolet	C1500	454 SS
1994-1997	Chevrolet	C1500	Base
1988-1998	Chevrolet	C1500	Cheyenne
1988-1992	Chevrolet	C1500	Scottsdale
1988-1998	Chevrolet	C1500	Silverado
1990-1998	Chevrolet	C1500	WT
1996	Chevrolet	C1500 Suburban	Base
1996	Chevrolet	C1500 Suburban	LS
1996	Chevrolet	C1500 Suburban	LT
1988,1993-1996	Chevrolet	Camaro	Base
1993	Chevrolet	Camaro	Indianapolis 500 Pace Car
1988-1990	Chevrolet	Camaro	Iroc-Z
1989-1992,1996	Chevrolet	Camaro	RS
1992	Chevrolet	Camaro	RS Heritage Edition
1991-1996	Chevrolet	Camaro	Z28
1992	Chevrolet	Camaro	Z28 Heritage Edition
1988-1992	Chevrolet	Caprice	Base
1988-1996	Chevrolet	Caprice	Classic
1988-1990	Chevrolet	Caprice	Classic Brougham
1993-1994	Chevrolet	Caprice	Classic LS
1988-1990	Chevrolet	Caprice	Classic LS Brougham
1991-1993	Chevrolet	Caprice	Classic LTZ
1988-1990,1995-1996	Chevrolet	Cavalier	Base
1995-1996	Chevrolet	Cavalier	LS
1988-1994	Chevrolet	Cavalier	RS
1988-1994	Chevrolet	Cavalier	VL
1988-1996	Chevrolet	Cavalier	Z24
1988-1990	Chevrolet	Celebrity	Base
1989	Chevrolet	Celebrity	CL
1988-1990	Chevrolet	Celebrity	Eurosport
2004	Chevrolet	Colorado	Base
2004,2006-2008	Chevrolet	Colorado	LS
2006-2012	Chevrolet	Colorado	LT
2004-2005	Chevrolet	Colorado	Sport
2004-2005	Chevrolet	Colorado	Sport LS
2006-2012	Chevrolet	Colorado	WT
2004-2005	Chevrolet	Colorado	Z71
2004-2005	Chevrolet	Colorado	Z71 LS
2004-2005	Chevrolet	Colorado	Z85
2004-2005	Chevrolet	Colorado	Z85 LS
1988-1989,1994-1996	Chevrolet	Corsica	Base
1988,1990-1993	Chevrolet	Corsica	LT
1989-1990,1992	Chevrolet	Corsica	LTZ
1988	Chevrolet	Corvette	35th Anniversary Edition
1993	Chevrolet	Corvette	40th Anniversary Edition
1988-1996	Chevrolet	Corvette	Base
1996	Chevrolet	Corvette	Collector's Edition
1996	Chevrolet	Corvette	Grand Sport
1995	Chevrolet	Corvette	Indianapolis 500 Pace Car
1990-1995	Chevrolet	Corvette	ZR-1
1996-2013	Chevrolet	Express 1500	Base
1996-2013	Chevrolet	Express 1500	LS
2001-2002,2006-2013	Chevrolet	Express 1500	LT
1988-1995	Chevrolet	G10	Beauville
1988-1995	Chevrolet	G10	Chevy Van
1988-1995	Chevrolet	G10	Sportvan
1988-1995	Chevrolet	G20	Beauville
1988-1995	Chevrolet	G20	Chevy Van
1988-1995	Chevrolet	G20	Sportvan
1994-1996	Chevrolet	Impala	SS
1994-1997	Chevrolet	K1500	Base
1988-1998	Chevrolet	K1500	Cheyenne
1988-1992	Chevrolet	K1500	Scottsdale
1988-1998	Chevrolet	K1500	Silverado
1991	Chevrolet	K1500	Sport
1990-1998	Chevrolet	K1500	WT
1996	Chevrolet	K1500 Suburban	Base
1996	Chevrolet	K1500 Suburban	LS
1996	Chevrolet	K1500 Suburban	LT
1988-1991	Chevrolet	K2500	Cheyenne
1988-1991	Chevrolet	K2500	Scottsdale
1988-1991	Chevrolet	K2500	Silverado
1977-1980	Chevrolet	K5 Blazer	Cheyenne
1981-1986	Chevrolet	K5 Blazer	Custom
1977-1980	Chevrolet	K5 Blazer	Custom Deluxe
1981	Chevrolet	K5 Blazer	Deluxe
1984	Chevrolet	K5 Blazer	Scottsdale
1978,1980-1986	Chevrolet	K5 Blazer	Silverado
1990-1996	Chevrolet	Lumina	Base
1990-1994	Chevrolet	Lumina	Euro
1995-1996	Chevrolet	Lumina	LS
1991-1994	Chevrolet	Lumina	Z34
1988	Chevrolet	Monte Carlo	Base
1988,1995-1996	Chevrolet	Monte Carlo	LS
1988	Chevrolet	Monte Carlo	SS
1995-1996	Chevrolet	Monte Carlo	Z34
1988	Chevrolet	Nova	Base
1988	Chevrolet	Nova	CL
1988	Chevrolet	Nova	Twin Cam
1988	Chevrolet	R10 Suburban	Scottsdale
1988	Chevrolet	R10 Suburban	Silverado
1989-1991	Chevrolet	R1500 Suburban	Scottsdale
1989-1991	Chevrolet	R1500 Suburban	Silverado
1994	Chevrolet	S10 Blazer	Base
1994	Chevrolet	S10 Blazer	LT
1994	Chevrolet	S10 Blazer	Tahoe
1994	Chevrolet	S10 Blazer	Tahoe LT
1999-2005	Chevrolet	Silverado 1500	Base
2016-2019	Chevrolet	Silverado 1500	Custom
2019	Chevrolet	Silverado 1500	Custom Trail Boss
2014-2019	Chevrolet	Silverado 1500	High Country
2004-2006,2009-2013	Chevrolet	Silverado 1500	Hybrid
1999-2013,2015-2018	Chevrolet	Silverado 1500	LS
1999-2019	Chevrolet	Silverado 1500	LT
2019	Chevrolet	Silverado 1500	LT Trail Boss
2007-2019	Chevrolet	Silverado 1500	LTZ
2019	Chevrolet	Silverado 1500	RST
2003-2006	Chevrolet	Silverado 1500	SS