Description

NorthWest FabWorks Blackbox Underdrive for 1980-1992 Toyota Land Cruisers

Looking for the ability to reach highway speeds while not losing your crawling gears, then check out this Blackbox Underdrive Unit. This underdrive unit bolts in between your factory Toyota transmission and transfer case. These Blackbox Underdrive Units feature a 1:1 High Range Gear Ratio and a 2.72:1 Gear Reduction when in Low Range. Allows for a wider range of gearing options when driving for better drivability.

Transmission Fitment: Toyota H42 4-speed Manual Transmission (No Extension Housing), Toyota H42F 4-Speed Manual Transmission (With Extension Housing), Toyota H55F 5-Speed Manual Transmission, Toyota A440 4-Speed Automatic Transmission.

Transfer Case Fitment: 1980-1990 Toyota 19-Spline Split Case Transfer Cases

NOTE: These have a lead time of roughly 12 weeks and are built to order by NorthWest FabWorks. We can also pre-assemble a complete transmission, underdrive, and transfer case combination in house.