Advance Adapters AX15 - Manual (Page 28)

Floorboard modifications are normally required. These
photos show the typical modification required.
28
ADAPTER PACKAGES & INDIVIDUAL COMPONENTS
FOR TOYOTA LAND CRUISERS
The installation of a NV4500 into Toyota Land Cruiser vehicles has proven to be a very rewarding installation. Not only does this
transmission offer the desirable 27% overdrive, but it also offers the ultra low 1st gear ratio necessary for offroad performance.
The wheel base of the Land Cruiser is well suited for the length of this new transmission with both the original 6 cylinder engine
or a new V8 engine installation. We originally developed the transfer case kits for use with a GM 4WD tailhousing. This
tailhousing was over 8" long, and when coupled to the transfer case, created an overall length that was only compatible with V8
installations. In 1996, we discontinued these kits because we found the shorter design is much more desirable.
In working with various 4WD shops, we developed the second phase of adapters for the GM version NV4500 into Land Cruisers.
These adapters require the shortening of the NV4500 output shaft and the use of an all new transfer case adapter housing.
These adapters shorten the overall length by nearly three inches. We found the newer design to be much more compatible with
installations using the stock Toyota 6 cylinder engine and new V8 installations.
In 1997, we began receiving requests to use the Dodge Standard Duty and Heavy-Duty diesel transmissions for Land Cruiser
conversions. Since the Dodge transmissions used different output shaft stickout lengths and spline counts compared to the
GM, we had to develop new adapters and spud shafts once again. These kits use custom spud shafts that couple onto the 23
tooth or 29 tooth Dodge output shaft. The adapter housings for the Dodge NV4500 are slightly longer than the Chevy NV4500
adapters. When you perform a Ford V8 swap or plan on keeping your stock Land Cruiser 6 cylinder engine, the Dodge NV4500
gives you the bigger advantage. The longer front input shaft allows the use of an adapter plate rather than a custom bellhousing.
We have designed our adapter kits around all three versions of the NV4500 4WD
transmission, accommodating whichever transmission you acquire. These
kits couple to either a GM 4WD 31 spline output shaft, a Dodge 4WD 23 spline
output shaft, or the Dodge 4WD 29 spline output
shaft. The GM housing is only 5-7/8" long, and the
Dodge housing 6.375” long. The housings also
incorporate the transfer case bolt holes necessary
for the mechanical transfer case linkage. Ideally, if
you are doing a
Chevy engine swap, the GM
transmission is the shortest and easiest to adapt
to. The Dodge transmission can also be used, but
you will forfeit about 1” of additional length. A
Ford
conversion must use the Standard Duty Dodge
NV4500. The Dodge Heavy-Duty NV4500 should only be used when retaining
the
stock 6 cylinder. Each of these adapter kits come with a new tailhousing
adapter, replacing the stock tailhousing adapter. These kits also use a spud
shaft to couple to the stock NV4500 output shaft. In all the following kits, this
output shaft must be shortened as illustrated on your instruction sheet.
TOYOTA LAND CRUISER TRANSFER CASE ADAPTERS FOR THE
GM 4WD NV4500:
These kits are designed to fit the GM 4WD NV4500 transmission. The stock output shaft must be cut to expose the 31 spline
portion of the shaft to which we couple. The stock tailhousing is replaced with our new adapter which measures 5.875” long. When
bolting this transmission to one of our GM conversion bellhousings, the overall assembled length on all three installations will
be
24.875 ”. The transfer case shift controls will need to be modified in order to be used with this transmission. There are two
3/8” holes located on the side of the adapter for the mechanical shifter linkage. If your vehicle has a 3 speed vacuum-type shifter,
these holes are not going to be used. They will need to be plugged with the hardware provided in the kit along with a small amount
of silicone.
P/N 50-0211 - GM 4WD NV4500 replacing FJ40 3 speed (10 spline)
P/N 50-0213 - GM 4WD NV4500 replacing FJ40 4 speed (16 spline)
* P/N 50-0214 - GM 4WD NV4500 replacing FJ40/FJ60 4 spd. (19 spl. split-case)
* This adapter does not have provisions to retain the
stock transmission crossmember. When using this
NV4500 adapter, a custom crossmember will need to
be fabricated.