Replacement springs for GM X-/A-/U-body cars and vans

The following tables list all replacement springs available for X-/A-/U-body cars and vans. Moog part numbers are listed; AC Delco and NAPA have cross-reference lookup tools to find their corresponding part numbers. The application listing is pretty vague for older models. It is the best information available at the present.

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Front springs

Moog PN	Spring rate (lb/in)	Height under 706 lb load (in)	Uninstalled height (in)	Wire diameter (in)	Application
CC628	78	11.1	20.2	0.590	1980-1993 X, A
CC630	83	11.7	20.4	0.590	1980-1996 X, A
CC632	83	12.2	20.8	0.609	1980-1996 X, A
CC634	85	12.9	21.3	0.609	1982-1991 X, A
CC652	110	11.8	18.3	0.640	1990-1995 U

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Rear springs

Two different spring designs were used. Springs with a pigtail upper end and a square lower end were used in 1980-1992 cars and 1990-1991 vans. Springs with pigtail ends on both top and bottom were used in 1993-1996 cars and 1992-1996 vans.

Moog PN	Spring rate (lb/in)	Height under 585 lb load (in)	Uninstalled height (in)	Wire diameter (in)	Application
Straight rate—upper pigtail end, lower square end
CS5659	159	10.0	13.7	0.500	1980-1992 X, A
CS5661	160	10.4	14.1	0.500	1980-1992 X, A
CS5667	236	10.6	13.1	0.562	1984-1992 A
Variable rate—upper pigtail end, lower square end
CC633	175	9.9	13.2	0.562	1980-1990 X, A
CC629	177	10.6	13.9	0.562	1980-1992 X, A
CC657	289	11.0	13.0	0.640	1992 Buick wagon
CC659	292	11.3	13.3	0.640	1990-1991 U
CC639	302	10.6	12.5	0.609	1992 Oldsmobile wagon
Variable rate—upper and lower pigtail ends
CC663	162	10.3	13.9	0.562	1993-1996 coupes, sedans
CC665	245	10.7	13.1	0.640	1993-1996 wagons
CC667	269	11.1	13.3	0.640	1992-1996 vans

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