The kit is designed to use a GM transmission from a 4WD vehicle. However, the 2WD version can be used with modification to the output shaft and the coupling shaft supplied in the kit.
NOTE: The 2WD transmission comes with two versions of output shafts, only one of these is suitable for the conversion.
This is a photo of a suitable 2WD version, note the spline length.
The automatic transmission main output shaft drives the transfer case through the new coupler shaft supplied in the kit. The adaptor housing is machined to accept the 80/100 series HF2A transmission mounting rubber.
When using a 4L80E to replace a 4-speed automatic the cross member mounting holes may need slotting to allow it to move rearward slightly. This modification may or may not be required, depending on the engine being fitted.
When using a 4L80E to replace a 5-speed gearbox the transfer case will need to be moved rearward approximately 40mm.
The hi-low 4WD-lever housing is simply bolted to the top of the new adaptor housing.
The automatic transmission main output shaft is retained therefore the transmission will not require disassembly.
The 4L80E has an overall case length of 661mm (26"). The adaptor housing is 133mm (5.25") long and when coupled to the 4L80E measures 794mm (31.25").
LandCruiser 80 & 100 series full time 4wd HF2A transfer case.
LandCruiser 70 & 105 series part time 4wd HF1A transfer case with 19 spline input
- 2 Adaptor housings
- Transfer case input shaft