Foxbody Mustang Transmission Specifications

Throughout the production run of the Foxbody Mustangs (1979-1993), Ford implemented 4 different transmissions - 3 automatics and 1 manual. Use the links below to navigate the specifications on the SROD, AOD and C4/C5 automatic transmissions as well as the Borg-Warner (now Tremec) T5.

Year	Engine	Transmission	Ring Gear Size	Standard Gear Ratio	Optional Gear Ratio
1979	5.0 L	SROD 4spd C-4 3spd auto	7.5 in 7.5 in	3:08:1 2.47:1	NA 3.08:1
1980	4.2 L	C-4 3spd auto	7.5 in	2.26:1	NA
1981	4.2 L	C-4 3spd auto	7.5 in	2.26:1	3.08:1 Trak-Lok
1982	4.2 L	C-5 3spd auto	7.5 in	2.73:1	3.08:1 Trak-Lok
1983 1983 1/2	5.0 L	SROD 4spd T5 5spd	7.5 in	3.08:1 Trak-Lock 3.27:1 Trak-Lok	NA
1984	5.0 L	T5 5spd	7.5 in	3.08:1 Trak-Lok	3.27:1 Trak-Lok
1984-85 (CFI) 1985 4bbl	5.0 L	AOD 4spd auto T5 5spd	7.5 in	3.27:1 Trak-Lok 2.73:1 Trak-Lok	NA 3.08:1 Trak-Lok
1986	5.0 L	AOD 4speed auto	8.8 in	3.27:1 Trak-Lok	NA
1986-93	5.0 L	T5 5spd	8.8 in	2.73:1 Trak-Lok	3.08:1 Trak-Lok
1987	5.0 L	AOD 4speed auto	8.8 in	2.73:1 Trak-Lok	3.08:1 Trak-Lok
1988-93	5.0 L	AOD 4speed auto	8.8 in	2.73:1 Trak-Lok	3.27:1 Trak-Lok
1993 Cobra	5.0 L	T5 5spd	8.8 in	3.08:1 Trak-Lok	NA

SROD 4 speed Transmission Specs (automatic)

Year	1st	2nd	3rd	4th	Reverse	Input Shaft Length
1979-83 1/2	3.07	1.72	1.00	.70	3.07	7.8 in

C4/C5 Automatic Transmission Gear Ratios

Year	1st	2nd	3rd	Reverse	Factory Lubricant
1979-1982	2.46	1.46	1.00	2.18	Dexron II, 11 qts

C4/C5 Torque Converter

Year	Ratio	Stall Speed (rpm)
1979	2.05:1	~1500
1980	2.09:1	~1500
1981	2.09:1 2.28:1 (CA)	~1500

AOD Automatic Transmission Gear Ratios

Year	1st	2nd	3rd	4th	Reverse	Factory Lubricant
1984-1993	2.40	1.47	1.00	.667	2.00	Mercon ATF, 12.3 qts

AOD Automatic Transmission Torque Converter

Year	Ratio	Stall Speed (rpm)
1984	2.28:1	1600-2200
1985-88	2.53:1	1600-2200
1988-93	2.30:1	1600-2200

T5 5 Speed Transmission Specs

Year	1st	2nd	3rd	4th	5th	Reverse	Part Number	Torque Capacity*	Factory Lubricant (5.6 pints)
1983 1/2	2.95	1.94	1.34	1.00	.725	2.76	E3ZR-7003-CA	275-295 ft-lb	Dexron II Series D ATF
1984	2.95	1.94	1.34	1.00	.625	2.76	E4ZR-7003-DA	275-295 ft-lb	Dexron II Series D ATF
1985	3.35	1.93	1.29	1.00	.675	3.15	E5ZR-7003-FA	305-325 ft-lb	Dexron II Series D ATF
1986	3.35	1.93	1.29	1.00	.675	3.15	E6ZR-7003-FA/FB	305-325 ft-lb	Dexron II Series D ATF
1987-89	3.35	1.93	1.29	1.00	.675	3.15	E6ZR-7003-FB	305-325 ft-lb	Mercon ATF (1988 up)
1989	3.35	1.99	1.33	1.00	.675	3.15	E9ZR-7003-AA	305-325 ft-lb	Mercon ATF
1990	3.35	1.99	1.33	1.00	.675	3.15	F0ZR-7003-AA	305-325 ft-lb	Mercon ATF
1991-93	3.35	1.99	1.33	1.00	.675	3.15	F2ZR-7003-AA	305-325 ft-lb	Mercon ATF

*Lower number was factory rated torque number. Factory meausurements were done at continuous load, not instantaneous. The higher torque rating is what real world application and 3rd parties have discovered the T5 to withstand.

Foxbody T5 Stock Clutch Specifications

Year	Clutch Diameter	Hub	Material	Clutch Part #	Pressure Plate Part #	Load Capacity
1979-1983	10 in	10-spline, 1 1/16 in	Asbestos	D9ZC-7550-CA	D9ZC-7653-DA	1455 lbs
1984	10 in	10-spline, 1 1/16 in	Asbestos	E4ZR-7550-AA	E4ZR-7653-AA	1540 lbs
1985	10.5 in	10-spline, 1 1/16 in	Organic	E5ZR-7550-AA	E4ZR-7653-AA	1540 lbs
1986-87	10.5 in	10-spline, 1 1/16 in	Organic	E6ZR-7550-AA	E6ZR-7653-AA	1644 lbs
1988-93	10.5 in	10-spline, 1 1/16 in	Organic	F0ZZ-7550-AA	F0ZZ-7563-A	1877 lbs ('88) 1770 lbs ('89) 2012 lbs ('90-93)
1993 Cobra	10.5 in	10-spline, 1 1/16 in	Organic	F3ZZ-7550-A	F3ZZ-7563-A	2124 lbs

Foxbody Mustang Transmission Specifications

Foxbody Drivetrain and Transmission Diagrams

Foxbody AOD, C4/C5, SROD Automatic Transmissions

Foxbody T5 Transmission