Land Cruiser manual - Advance Adapters

FORD AOD:
This Ford automatic overdrive was introduced in 1980, and found in the F-series pickups behind small blocks. Although we do not
list any adapters on the Transfer Selection Chart for this transmission, we are capable of adapting the AOD to both the 10 & 16 spline
Land Cruiser transfer cases. Please call us directly for more information.
MANUAL (Truck-style) TRANSMISSIONS:
Truck transmissions can easily be adapted to the Land Cruiser transfer cases. The GM truck transmissions
can be the Muncie SM420, SM465, and NV4500. The Ford truck transmissions include the Ford T18 or the
NP435. These transmissions offer a super low 1st gear ratio which is excellent for offroad use when rocky
terrain is involved. For normal everyday driving, the 1st gear is very seldom used. The disadvantages of these
types of transmissions is the weight along with stiff shifting. Some of the transfer case adapters will require
new main shafts, while other kits use a spud shaft that simply slips over the original output shaft.
SM420:
This transmission works great in Land Cruisers. The overall length is 10-1/2”. It has the lowest 1st gear available of 7.05:1; 2nd
3.57:1; 3rd 1.7:1, and a 4th gear ratio of 1:1. The transmission was used in GM trucks from 1947 to 1968. This transmission has
a 10 spline output shaft which we couple to using a new spud shaft. (Note: We have seen a few SM420 transmissions with a 32
spline output which we can also adapt to). The cast iron case of this transmission will sometimes require modifications due to
interference with the front driveshaft or transfer case shifter linkage. A transfer case shifter linkage bracket is not included in any
of these kits. As the years progress, it is getting harder to find this transmission and parts.
P/N 50-2601 - SM420 replacing FJ40 Land Cruiser 3 speed (10 spline) Adapter length of 4.500”
P/N 50-2602 - SM420 replacing FJ40 Land Cruiser 4 speed (16 spline) Adapter length of 4.500”
*P/N 50-2603 - SM420 replacing FJ40/FJ60 Land Cruiser 4 speed (19 spline split-case) Adapter length of 4.500”
*This is a two piece adapter that does not have provisions to retain the stock transmission crossmember. When using this SM420
adapter, a custom crossmember will need to be fabricated.
SM465:
Used from 1968 to 1988, this transmission replaced the SM420. It has an overall length of 12”. The 1st gear ratio is 6.58:1; 2nd
3.58:1; 3rd 1.57:1, and 4th gear ratio of 1:1. This transmission was used in both the 2WD & 4WD vehicles. Throughout its 20 years,
the transmission case never changed; however, we have seen three different output shafts. The 1968-79 4WD transmission used
a 10 spline output shaft, which is easy to adapt. The 1968-88 2WD version used a 35 spline output shaft, which is also easily adapted;
however, the output shaft length in this version requires it to be shortened. The 1980-88 4WD tranny used a long 32 spline output
shaft. We do not offer any adapters that couple to this output shaft because of its length. If you have this SM465 version, you can
change the output shaft to the 10 or 35 spline output. As mentioned, we only offer SM465 adapter kits for the 10 or 35 spline output
shafts. These kits come with both a spud shaft and adapter housing which measures 4.625”. The shifter bracket for the transfer
case shift linkage must be purchased separately.
SM465 SM465 4WD 4WD 10 10 Spline Spline Transmission:
Transmission:
P/N 50-4601 - 4WD SM465 replacing FJ40 Land Cruiser 3 speed (10 spline)
P/N 50-4602 - 4WD SM465 replacing FJ40 Land Cruiser 4 speed (16 spline)
SM465 SM465 2WD 2WD 35 35 Spline Spline Spline Transmission:
Transmission:
Transmission:
P/N 50-4901 - 2WD SM465 replacing FJ40 Land Cruiser 3 speed (10 spline)
P/N 50-4902 - 2WD SM465 replacing FJ40 Land Cruiser 4 speed (16 spline)
*P/N 50-4903 - 2WD SM465 replacing FJ40/FJ60 Land Cruiser 4 speed (19 spline split-case)
*This is a two piece adapter that does not have provisions to retain the stock transmission crossmember. When using this SM465
adapter, a custom crossmember will need to be fabricated.
Stock Stock L/C L/C 6 6 cylinder cylinder cylinder to to the the SM465: SM465: Some customers prefer not to replace the stock Land Cruiser engine. For these
applications, we offer a transmission retrofit option, P/N 712519. By using a 1963-73 Land Cruiser 3 speed bellhousing, we are
able to adapt the popular SM465 to your stock engine. The kit includes a new front retainer, pilot bushing, and transfer case shifter
bracket. One of the transfer case adapters listed above will be required.
NV4500:
In 1993, General Motors and Chrysler teamed together to manufacture a transmission referred to as the NV4500 transmission.
The Model NV4500 was used in both the GM & Dodge truck applications. This transmission is probably one of the finest options
available for Land Cruiser conversions. We have developed kits for both the GM & Dodge transmission - for all three Land Cruiser
transfer cases. We also offer adapter kits to couple the NV4500 directly to the Land Cruiser straight 6 cylinder engine. The section
that follows will highlight both the transfer case and bellhousing adapters we offer.
32 TRANSMISSION-TO-TRANSFER CASE OPTIONS