Toyota manual - Advance Adapters

ADVANCE CRAWLING SYSTEMS / Tx2
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TOYOTA R150F TRANSMISSION TO TOYOTA
21 & 23 SPLINE GEAR DRIVEN TRANSFER CASE:
This adapter kit is compatible with both the 21 & 23 spline gear drive transfer case. This kit allows you to either couple one of the
double transfer case crawler adapters or a set of Trail Tamer low gears to your Toyota and still retain your stock transmission. Geardriven
transfer cases used with this adapter must have the transfer case shifter mounted on the
top on the transfer case.
P/N 50-5707 - Toyota R150F to 23 spline gear-driven T/C
P/N 50-5708 - Toyota R150F to 21 spline gear-driven T/C
TOYOTA R150F & R151F TRANSMISSION TO
TOYOTA 4 CYLINDER BELLHOUSING ADAPTER:
This adapter plate allows you to fit either one of these transmissions to the
stock 4 cylinder bellhousings. The R150F & the R151F were coupled to
the Toyota V6 and the Turbo charged 4 cylinder. These transmission were
built to handle more torque and horsepower than the stock 4 cylinders
transmission. This adapter plate is 5/8” thick and come with a crank spacer
to retain input shaft support.
P/N 712562 - Toyota R150F/R151F to 4 cylinder bellhousing
ADVANCE CRAWLING SYSTEMS
Tx2 Crawler Adapters:
Because of larger tires with a stock drivetrain, most Toyota trucks are not geared low
enough. A double transfer case crawler adapter can be an easy solution to your gearing
problems. Low gearing allows you control crawl over obstacles; and keeping the vehicle
under control saves on wear & tear and, in many cases, less breakages.
We are pleased to release as part of our Advance Crawling Systems our all new redesigned Tx2.
Designed for 1979-95 Toyota truck gear-driven transfer cases (21 or 23 spline), this new double
bearing design is ideal to help with gear support and deflection. Tx2 kits have a casting length
of only 2.375” long.
This gear box takes the stock Toyota transfer case from a low gear ratio of 2.28:1, to a 5.20:1 low
gear ratio. The stock gear-driven Toyota transfer case is assembled from the factory in
3 basic portions. By using the front section of the transfer case as a donor box, our adapter
will allow you to install this reduction box between your transmission and transfer case.
When installing this unit, driveline and floorboard modifications are required. Since the
stock transfer case is also being relocated further back, an extended speedometer cable
will be necessary. The kits we offer fit both the 21 & 23 spline gear-driven transfer cases.
P/N 50-5905D - Tx2 Crawler Adapter for 21 spline gear-driven T/C
P/N 50-5906D - Tx2 Crawler Adapter for 23 spline gear-driven T/C
P/N 716186-C - Speedometer cable extension
The 1979-83 Carbureted and the 1985-88 EFI T/Cs have the shifter on the transfer case with a 4 bolt cast iron base of 3-1/8" x
4-3/8". When using one of these cases as a donor box, your shifters would measure 6-1/2" apart.
1984-88 Carbureted and 1986-87 EFI Turbo T/Cs have the T/C shifter located on the transmission tailhousing with a 4 bolt
aluminum base of 3-1/4" x 4". When using one of these cases as a donor box, your shifters would measure 11" apart.
The 1989-95 EFI T/C shifter is located on the transmission tailhousing. This transfer case has a 6 bolt aluminum base that houses
both the transfer case & transmission shift handles. This aluminum base is 4" x 8". When using one of these cases as a donor
box, your shifter’s would measure 10" apart.
Note #1 - The rear T/case must be a top shifting style (1979-83 Carbureted or 1985-88 EFI).
Note #2 - The reduction gear box can retain the original T/C shift rod location to match to the existing transmission, or the reduction box can
be changed out to the 1979-83 carbureted or 1985-88 EFI box (T/C shift lever on reduction box).
Note #3 - Shift rods, forks & driveshaft flanges are interchangeable between all years shown.