Land Cruiser manual - Advance Adapters

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LAND CRUISER TRANSFER CASES
We offer conversion components for the 1963 to 2002 Land Cruiser models.
Between these years, several different style transfer cases have
been designed for use in Toyota Land Cruisers. It is extremely important
that you know which model you have before switching transmissions. The
Transfer Case Adapter Selection Chart in this section highlights the various
transmission-to-transfer case options. Some of the newer Land Cruiser
transfer case adapters are not listed on the adapter chart, but the adapters
are listed under the transmission options that follow.
Pre-1963 Transfer Cases: Early Land Cruisers produced before 1963 used a small cast iron single speed transfer
case. There are no adapters available for these early models. We suggest that you purchase a transfer case from a later model
Land Cruiser.
1963 to 1973 Transfer Cases: Between the years 1963-73, Toyota began equipping Land
Cruisers with a 3 speed transmission and a one-piece aluminum transfer case. This transfer case
has a low ratio of 2.12:1. The input side of this transfer case has two gears: a main drive gear and
a P.T.O. gear. Both of these gears have 10 internal splines and a diameter of 1.375". These cases are
equipped with a vacuum style shifter for operating the transfer case controls. Later on, this transfer
case was switched to a mechanical-type shifter linkage,
which eventually evolved into the later model 4
speed linkage design.
Stock 3 speed & vacuum contolled transfer case
TRANSFER CASE CONSIDERATIONS
When using one of our transfer case adapters, our output/
spud shaft is shorter than your original output shaft. The
spacer and tab washer will not be reused with our adapter
kits. The photo (right) shows the proper assembly on one
of our shafts.
When replacing the stock 3 speed transmission, you will lose the stock bellhousing
mounts that supports your drivetrain. Refer to the Crossmember subheading
in the Engine Conversion section for your options.
1974 to July 1980: Beginning in 1974, Toyota started using a 4 speed manual transmission. The transfer case still had
two gears on the input, but the input gear was changed to 16 splines and was 1.259" in diameter. The transfer case low gear ratio
was a 1.95:1. This transfer case was only available with a mechanical linkage. The transfer case bolt pattern was the same as
the earlier 3 speed aluminum models.
When using one of our transfer case adapters, our output/spud shaft is exactly the same length as your original output. The gears
and spacer will all be reused, but the old rear nut and washer will need to be replaced (items provided in kits).
When replacing the stock 4 speed transmission, you will lose the stock bellhousing mounts that supports your drivetrain. Refer
to the Crossmember subheading in the Engine Conversion section for your options.
1963 to July 1980 Transfer Case Upgrade: Advance Adapters
is proud to introduce the Orion transfer case. This new 4.0:1 or 3.0:1 ratio and cast
iron case design is sure to capture the attention of the Land Cruiser enthusiast.
Advance Adapters is not the manufacturer of this new transfer case; however, we
are the exclusive distributor.
The Orion kits come with a new cast iron case, four new gears, a new larger cluster pin, and a complete gasket bearing and seal
kit. This transfer case, however, is not a complete ‘ready-to-bolt-in’ unit like the Atlas. The transfer case does require the use of
your stock front and rear output shafts and housing. The new unit also requires the use of the stock P.T.O. and inspection covers.
The unit can be used to replace either the stock 3 or 4 speed transfer case. The new case is exactly the same size and bolt pattern
as the stock Land Cruiser transfer case, so no driveline modifications are required. It will fit to any transmission that a stock transfer
case was coupled too. For additional details on the Orion see Pages 37-41.