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1985MustangGT.com |
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1979-2004 Mustang Suspension Specifications |
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Suspension Travel |
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Year |
Front (inches) |
Rear (inches) |
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Jounce |
Rebound |
Jounce |
Rebound |
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1979 |
3.50 |
3.50 |
3.31 |
4.77 |
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1980-82 |
3.66 |
3.34 |
3.41 |
4.54 |
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1983 |
3.09 |
4.99 |
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1984 |
3.20 |
4.88 |
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1985-86 |
3.58 |
3.42 |
3.25 |
4.63 |
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1987-88 |
3.05 |
4.66 |
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1989-91 |
3.24 |
4.64 |
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1992-93 |
2.90 |
4.81 |
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Control Arm Bushing Rates |
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Year |
Front |
Rear |
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Outer |
Inner |
Body Bushing |
Axle Bushing |
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Upper |
Lower |
Upper |
Lower |
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1979 |
37,000 |
19,100 |
13,000 |
12,000 |
9,800 |
17,000 |
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1982 |
19,000 |
24,000 |
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1983 |
21,500 |
15,700 |
8,700 |
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1984-93 |
10,000 |
9,900 |
16,000 |
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Coil Spring Specifications |
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Year |
Front |
Rear |
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Spring Rate (lb/in) |
Spring Rate (lb/in) |
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Base |
Handling / GT |
TRX |
Cobra |
Base |
Handling / GT |
TRX |
Cobra |
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1979 |
370 |
395 |
425 |
n/a |
160 |
160 |
175 |
n/a |
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1980 |
370 |
395 |
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1981 |
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1982 |
395 |
410 |
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1983 |
410 |
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1984 |
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1985 |
425-525 |
n/a |
200-300 |
n/a |
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1986 |
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1987 |
425-530 |
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1988 |
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1989 |
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1990 |
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1991 |
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1992 |
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1993 |
400 |
400 |
160 |
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M-5300-B |
425-530 |
n/a |
n/a |
n/a |
200-300 |
n/a |
n/a |
n/a |
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M-5300-C |
650 |
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M-5300-F |
460-570 |
170-310 |
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M-5300-G |
500-570 |
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Sway Bar Specifications |
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Year |
Front |
Rear |
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Grade |
Bar Size |
Grade |
Bar Size |
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Base |
Handling |
TRX |
SVO |
Cobra / Cobra R |
Base |
Handling |
TRX |
SVO |
Cobra |
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1979 |
SAE 1090 |
25.4mm |
26.9mm |
26.9mm |
n/a |
n/a |
SAE 1090 |
n/a |
12.7mm |
14.2mm |
n/a |
n/a |
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1980 |
23.9mm |
25.4mm |
28.6mm |
12.7 & 14.2mm |
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1981 |
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1982 |
14.2mm |
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1983 |
28.6mm |
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1984 |
30.5mm |
17.0mm |
17.0mm |
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1985 |
23.9 & 28.6mm |
33.0mm |
n/a |
20.1mm |
21.1mm |
n/a |
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1986 |
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1987 |
n/a |
SAE 5160 |
n/a |
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1988 |
23.9mm |
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1989 |
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1990 |
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1991 |
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1992 |
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1993 |
28.6mm / 33.0mm |
0.83 |
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1997 |
26.9mm |
30mm |
25mm |
21.1mm |
23mm |
25mm |
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Mustang V8 Wheel Alignment Specifications |
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Year |
Caster (degrees) |
Camber (degrees) |
Toe (inches) |
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Maximum |
Minimum |
Maximum |
Minimum |
Maximum |
Minimum |
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1979 |
+1/4 |
+1 3/4 |
-1/2 |
+1 |
+3/16 |
+7/16 |
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1980 |
+1/16 |
+5/16 |
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1981 |
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1982 |
+3/8 |
+1 7/8 |
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1983 |
+1/2 |
+2 |
-3/4 |
+3/4 |
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1984 |
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1985 |
+1/4 |
+1 3/4 |
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1986 |
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1987 |
+3/32 |
+1 9/16 |
-1/2 |
+1/2 |
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1988 |
+1/2 |
+2 |
-.6 |
+.9 |
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1989 |
+1/2 |
+2 |
+.07 |
+.31 |
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1990 |
+1.15 |
+2.65 |
-1.35 |
+.15 |
-.25 |
0 |
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1991 |
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1992 |
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1993 |
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1993 Cobra |
-.12 |
+.12 |
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Ford Mustang Spring Rates |
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Stock Spring Rates |
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Model/Year |
Front Spring Rate (lb/in) |
Rear Spring Rate (lb/in) |
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Mustang GT/V6 Coupe 1994-2004 |
450 (linear) |
210 (linear, solid axle) |
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Mustang GT/V6 Vert. 1994-2004 |
400 (linear) |
185 (linear, solid axle) |
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Mustang Cobra Coupe 1999-2001 |
500 (linear) |
475 (linear, IRS) |
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Mustang Cobra Coupe 2003-2004 |
600 (linear) |
600 (linear, IRS) |
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Mustang Cobra Vert. 2003-2004 |
500 (linear) |
470 (linear, IRS) |
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Mustang Mach1 Coupe 2003-2004 |
600 (linear) |
250 (linear, solid axle) |
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Mustang Bullitt Coupe 2001-20022 |
600 (linear) |
250 (linear, solid axle) |
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Aftermarket Spring Rates |
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Manufacturer/Part Info |
Front Spring Rate (lb/in) |
Rear Spring Rate (lb/in) |
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Ford Racing B Springs (M5300B) |
425-530 (progressive) |
200-300 (progressive, solid axle) |
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Ford Racing C Springs (M5300C) |
650 (linear) |
200-300 (progressive, solid axle) |
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Ford Racing F Springs (M5300F) |
460-570 (progressive) |
170-310 (progressive, solid axle) |
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Ford Racing G Springs (M5300G) |
500-570 (progressive) |
170-310 (progressive, solid axle) |
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Eibach Pro-Kit Springs (94-04 Mustangs) |
425-530 (progressive) |
200-300 (progressive, solid axle) |
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Eibach Sportline Springs (79-04 Mustangs) |
425-630 (progressive) |
140-295 (progressive, solid axle) |
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H&R Sport Springs (94-04 Mustangs) |
490-575 (progressive) |
205-250 (progressive, solid axle) |
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H&R Sport Springs (99-04 Cobra) |
700-760 (progressive) |
685 (linear, IRS) |
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H&R Super Sport Springs (94-04 Mustangs) |
700-760 (progressive) |
275-300 (progressive, solid axle) |
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H&R Race Springs (79-04 Mustangs) |
750-850 (progressive) |
260-280 (progressive, solid axle) |
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H&R Race Springs (99-04 Cobra) |
750-850 (progressive) |
770 (linear, IRS) |
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Steeda Sport Springs (79-04 Mustangs) |
650 (linear) |
200-250 (progressive, solid axle) |
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Steeda Sport Springs (03-04 Cobra) |
720-780 (progressive) |
650-790 (progressive, IRS) |
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Steeda Competition Springs (79-04 Mustangs) |
750-850 (progressive) |
250 (linear, solid axle) |
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StangSuspension Springs (94-04 Mustangs) |
490-575 (progressive) |
205-250 (progressive, solid axle) |