Transmission; Rear Axle Ratio; Front Brakes - Factory Five Racing Mk4 Roadster Assembly Manual

Transmission

Year Type 1st
1983.5 T-5 2.95
1984 T-5 2.95
1985-89 T-5 3.35
1989-93 T-5 3.35
1994-95 T-5 3.35
1995 TR-3550 3.27
1996-98 T-45 3.37
1999-02 TR-3650 3.38
2003-04 T-56 2.97

Rear Axle Ratio

From 1986 to 2004 8.8" rear axles were used in Mustangs. In 1994 they went from a 4.25" 4-lug bolt
pattern to a 4.5" 5-lug bolt pattern. Most wheels fit the 59.25" width the best. Make sure you know
what axle you have before ordering wheels.
Year
87-93
94-98
99-04

Front brakes

1987 to 1993 front rotors are 11" diameter, and use a 4.25" 4-lug bolt pattern. They use a cast iron
single piston caliper. These rotors also contain the hub that carries the wheel bearings cast in as a one
piece rotor/hub assembly (1982 Lincoln Continental rotors are an exact rotor/hub assembly except they
have a 4.5" 5-lug bolt pattern). In 1994 the Mustang had a separate hub and rotor, and had a 4.5" 5-bolt
lug pattern. The rotor stayed 11inches in diameter, but a new style caliper was added. All Cobra™ and
the 1995 Cobra™ R versions of the Mustang from 1993 to 2004 used 13 inch front rotors with PBR 2
piston calipers. The 2000 Cobra™ R used Brembo 4 piston calipers and rotors. In all cases the flexible
brake lines with mounting brackets and banjo bolts are required from the donor. (More brake
component information can be found in the High Performance Braking Systems section of this Manual)
2nd 3rd 4th
1.94 1.34 1.00
1.94 1.34 1.00
1.93 1.29 1.00
1.99 1.33 1.00
1.99 1.33 1.00
1.98 1.34 1.00
1.99 1.33 1.00
2.00 1.32 1.00
2.07 1.43 1.00
2004
2003
1996-2002
1995
1994
1987-1993
Rear End Width Rear Brake Type
9" drum
59.25"
10.5" solid disc (GT)
61.125"
10.5" solid disc (GT)
62.52"
www.factoryfive.com
Torque
Capacity
5th 6th R lbs-ft
0.725 N/A 2.76 265
0.625 N/A 2.76 265
0.675 N/A 3.15 265
0.675 N/A 3.15 300
0.675 N/A 3.15 300
0.680 N/A 3.00 350
0.670 N/A 3.22 325
0.620 N/A 3.38 360
0.800 0.62 3.28 450
Manual Optional Automatic
3.55
3.55
3.27
3.08
3.08
2.73 3.08
537
508-291-3443
Part Number
E3ZR-7003-A
E4ZR-7003-DA
E(5,6)ZR-7003-(FA,FB)
F(Z,9,0)ZR-7003-(A,AA)
2.49
3.27
3.27
3.27
3.27
3.27
11.65" vented disc (Cobra)
11.65" vented disc (Cobra)
Weight
75
75
75
75
75
100
109
120
129