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Late Model Suspension
Chart
Courtesy of Hib Halverson, finspeed@aol.com
Last update 10/1/04
Widen your browser to see the entire table.
| Model year |
Suspension RPO |
Front Spring Rate (N/mm) |
Rear Spring Rate (N/mm) |
Front Wheel Rate (N/mm) |
Rear Wheel Rate (N/mm) |
Front Antiroll bar dia (mm) |
Rear Antiroll bar dia (mm) |
Wheels (in * in * mm offset) Front |
Wheels (in * in * mm offset) Rear |
Front Tires |
Rear Tires |
Shocks |
Front Lower Bushings |
| 1984 |
| FE1 | 63.5 | 72.0 | 21.5 | 28.6 |
24 S | 20 S | 15x7x17 16x8.5x32 | 15x7x17
16x8.5x32 | 215/65R15 255/50VR16 | 215/65R15 255/50VR16 |
1 | N |
| Z51 | 102.0 | 87.5 | 28.6 | 37.5 |
25 S | 23 S | 16x8.5x32 | 16x9.5x38 |
255/50VR16 | 255/50VR16 | 1/4 | HD |
| 1985 |
| FE1 | 54.0 | 39.9 | 17.5 | 24.1 |
24 S | 20 S | 16x8.5x32 | 16x8.5x32 |
255/50VR16 | 255/50VR16 | 1/3 | N |
| Z51 | 63.5 | 57.2 | 26.0 | 30.6 |
30 S | 24 S | 16x9.5x38 | 16x9.5x38 |
255/50VR16 | 255/50VR16 | 1/4 | HD |
| 1986 |
| FE1 | 51.8 | 39.9 | 18.0 | 24.1 |
26 T | 20 S | 16x8.5x32 | 16x8.5x32 |
255/50VR16 | 255/50VR16 | 1/3 | N |
| Z51 | 66.5 | 57.2 | 26.0 | 30.6 |
30 S | 22 S | 16x9.5x38 | 16x9.5x38 |
255/50VR16 | 255/50VR16 | 4 | HD |
| FE1* | 54.4 | 39.9 | 19.0 | 24.1 |
26 T | 19 S | 16x8.5x32 | 16x8.5x32 |
255/50VR16 | 255/50VR16 | 2/3 | N |
| 1987 |
| FE1 | 51.8 | 39.9 | 18.0 | 24.1 |
26 T | 20 S | 16x8.5x32 | 16x8.5x32 |
255/50VR16 | 255/50VR16 | 1/3 | N |
| Z52 | 51.8 | 39.9 | 18.0 | 24.1 |
30 S | 20 S | 16x9.5x38 | 16x9.5x38 |
255/50VR16 | 255/50VR16 | 3 | N |
| Z51 | 66.5 | 57.2 | 26.0 | 30.6 |
30 S | 22 S | 16x9.5x38 | 16x9.5x38 |
255/50VR16 | 255/50VR16 | 4 | HD |
| FE1* | 54.4 | 39.9 | 19.0 | 24.1 |
26 T | 19 S | 16x8.5x32 | 16x8.5x32 |
255/50VR16 | 255/50VR16 | 2/3 | N |
| Z52* | 54.4 | 39.9 | 19.0 | 24.1 |
26 T | 20 S | 16x9.5x38 | 16x9.5x38 |
255/50VR16 | 255/50VR16 | 3 | N |
| 1988 |
| FE1 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 16x8.5x50 | 16x8.5x50 |
255/50ZR16 | 255/50ZR16 | 1/3 | N |
Z52 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| Z51 | 115.5 | 57.2 | 30.8 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 4 | HD |
| FE1* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 16x8.5x50 | 16x8.5x50 |
255/50ZR16 | 255/50ZR16 | 2 | N |
| Z52* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| 1989 |
| FE1 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| Z51 | 115.5 | 57.2 | 30.8 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 4 | HD |
| Chal. | 115.5 | 57.2 | 30.8 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| 1990 |
| FE1 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| ZR1 | 96.2 | 39.9 | 27.1 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x11x36 |
275/40ZR17 | 315/35ZR17 | 5 | N |
| Z51 | 115.5 | 57.2 | 30.8 | 33.5 |
30 S | 26 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 4 | HD |
| R9G | 115.5 | 57.2 | 30.8 | 33.5 |
30 S | 26 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| 1991 |
| FE1 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3 | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| ZR1 | 96.2 | 39.9 | 27.1 | 25.7 |
26 T | 26 S | 17x9.5x56 | 17x11x36 |
275/40ZR17 | 315/35ZR17 | 5 | N |
| Z07 | 115.5 | 57.2 | 30.8 | 33.5 |
30 S | 26 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3* | 93.1 | 39.9 | 26.7 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| 1992 |
| FE1 | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3 | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| ZR1 | 75.4 | 33.0 | 25.4 | 22.6 |
26 T | 26 S | 17x9.5x56 | 17x11x36 |
275/40ZR17 | 315/35ZR17 | 5 | N |
| Z07 | 90.1 | 57.2 | 29.4 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 3 | N |
| FX3* | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 22 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | N |
| 1993 |
| FE1 | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17 | 285/40ZR17 | 3 | N |
| FX3 | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17 | 285/40ZR17 | 5 | N |
| ZR1 | 75.4 | 33.0 | 25.4 | 22.6 |
26 T | 26 S | 17x9.5x56 | 17x11x36 |
275/40ZR17 | 315/35ZR17 | 5 | N |
| Z07 | 90.1 | 57.2 | 29.4 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17 | 285/40ZR17 | 3 | N |
| FX3* | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17 | 285/40ZR17 | 5 | N |
| 1994 |
| FE1 | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 3 | N |
| FX3 | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 5 | N |
| ZR1 | 75.4 | 33.0 | 25.4 | 22.6 |
26 T | 26 S | 17x9.5x56 | 17x11x36 |
275/40ZR17 | 315/35ZR17 | 5 | N |
| Z07 | 90.1 | 57.2 | 29.4 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 3 | N |
| FX3* | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 5 | N |
| 1995 |
| FE1 | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 3 | N |
| FX3 | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 5 | N |
| ZR1 | 75.4 | 33.0 | 25.4 | 22.6 |
26 T | 26 S | 17x9.5x56 | 17x11x36 |
275/40ZR17 | 315/35ZR17 | 5 | N |
| Z07 | 90.1 | 57.2 | 29.4 | 33.5 |
30 S | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 5 | HD |
| FE1* | 73.2 | 39.9 | 23.9 | 25.7 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 6 | N |
| FX3* | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 5 | N |
| 1996 |
| FE1 | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 9 | N |
| FE1/Z16 | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 26 S | 17x9.5x56 | 17x11x50 |
275/40ZR17 | 315/35ZR17 | 3 | N |
| F45 | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 7 | N |
| F45/Z16 | 60.0 | 26.0 | 19.0 | 18.0 |
26 T | 26 S | 17x9.5x56 | 17x11x50 |
275/40ZR17 | 315/35ZR17 | 7 | N |
| Z51 | 73.2 | 33.0 | 23.9 | 25.7 |
26 T | 24 S | 17x9.5x56 | 17x9.5x56 |
275/40ZR17 | 275/40ZR17 | 10 | HD |
| Z51/Z16 | 73.2 | 33.0 | 23.9 | 25.7 |
26 T | 26 S | 17x9.5x56 | 17x11x50 |
275/40ZR17 | 315/35ZR17 | 10 | HD |
| FE1* | 73.2 | 39.9 | 23.9 | 25.7 |
24 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 6 | N |
| F45* | 73.2 | 39.9 | 23.9 | 25.7 |
24 T | 24 S | 17x8.5x56 | 17x9.5x56 |
255/45ZR17E | 285/40ZR17E | 8 | N |
* Indicates the convertible body style.
CODES
S-Solid antiroll bar
T-Tubular antiroll bar
1-Delco shock
2-Delco shock, convertible specific
3-Delco/Bilstein gas shock
4-Delco/Bilstein gas shock, Z51 specfic
5-Ride-adaptive Delco/Bilstein gas shock
6-Delco/Bilstein gas shock, convertible specific
7-Delphi bi-state ride adaptive gas shock
8-Delphi bi-state ride adaptive gas shock, convertible specific
9-Delco/Bilstein gas shock with valving revised for improved ride
10-Delco/Bilstein gas shock with valving revised for improved ride, Z51-specific
N-Normal, front, lower control arm bushings (ft. 11k n/mm, rr 2.3k n/mm)
HD-Heavy-duty, front, lower control arm bushings (ft 13.5k n/mm, rr 3.5k n/mm)
E-EMT tire available, Z16-Grand Sport
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