Jeep Transmissions: SR-4 and T-4

The SR-4 and T-4 are light duty four speeds. Pictured is an SR-4, but they look almost identical from the outside. These transmission were manufactured by Borg-Warner and they often say Ford on the top cover. The case is aluminum and the casting numbers on the drivers side are 13-32 for the SR-4 and 13-51 for the T-4.

The T-4 and SR-4 use a 1 1/8" 10 spline input shaft when they are used with the I6 and 1" 14 spline input shaft when they are used with the I4.

Usage

The SR-4 is a light duty transmission used only in 1980 and 1981 in the 151 and some 258s. The T-4 is also a light duty transmissions used from 1982 until 1986.

Transmission	1st	2nd	3rd	4th	5th	Rev
SR-4	4.07	2.39	1.49	1.00		3.95
T-4	4.03	2.37	1.50	1.00		3.76