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Jeep Transmissions Conversions: T-98

by Terry L. Howe

Swaps

T-18
T-19
T-98
NP435
NV4500
SM420
SM465
TF727
TH350

Jeep Trans

Upgrades
Factory Options
General


The T-98 is the oldest of Borg-Warner's large production, granny unsynchronized first, heavy duty, four speeds. It was used in Jeep, Ford, and IH trucks. The input bearing retainer size (4.85") and often the input shaft length is compatible with the bell housing used with the T-150, T-176, T-5, T-4, SR-4, and of course Jeep T-18.

On the Jeep version, the input shaft length varies depending on the application, but the shaft can be cut and resplined or an input shaft of the appropriate length can be installed. The Ford version of the T-98 uses a larger diameter input shaft, so a clutch disk that matches the larger input shaft must be used. If you are planning on converting a transmission, a 2WD Ford T-18 would probably be easier to find and install.

Last modified Wednesday, 01-Dec-2010 08:13:41 MST


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