Advance Adapters 50-9804 User Manual

ADV ANCE ADAPTERS INC. P/N: 50-9804

P.O. Box 247, 4320 Aerotech Center Way New Item: (11/93)
Paso Robles, CA 93447 PAGE 1 OF 3
Telephone: [phone] Fax: [phone] Page Rev. Date: 01-23-01

GM TRUCK 4SP MODEL SM465 10 SPLINE

TO JEEP NP 21 SPLINE T/C

KIT CONSISTS OF:

No. Qty Part No. Description

1. 1 51-9800 CASTING (Ref: 711198)

2. 1 52-9800 SPUD SHAFT - 21 SPLINES

3. 1 716515 GASKET

4. 1 716517 GASKET

5. 1 716738 NATIONAL SEAL (#473459) DUAL LIP (for front of NP231 T/C)

6. 1 723701 3/8"-16 HEX NUT

7. 14 723704 3/8" LOCK WASHER PLT.

8. 1 723711 STUD BOLT 3/8"-16 x 2"

9. 13 723723 H.H.C.S. 3/8"-16 x 1-1/2"

10. 1 JP001 JEEP INSTRUCTION MANUAL

SPECIAL INSTALLATION NOTE:

The rear output shaft bearing that is located in the back of the transmission main case has an external snap ring around
the outside diameter of the bearing. The snap ring is trapped between the transmission case and the new Advance
Adapter housing. By trapping the snap ring, the main shaft location is held in a firm location and the shaft is prevented
from drifting either forward or rearward. The thickness of the original snap ring varies between a 2WD GM
transmission and a 4WD GM transmission.

Since we use the same adapter housing for both locations, it may be necessary to modify the thickness of the snap ring
for installation with the new adapter housing. This can be done by simply grinding down the thickness or by doubling
up on the gasket between the transmission and the transfer case. Not all applications will have this problem, but you
should be aware of this variation. Two wheel drive transmissions use a thinner snap ring.

PLEASE NOTE THE FOLLOWING:

This kit is extremely long (19"), and should be used for replacement of Peugeot & AW4 transmissions with a new V8 engine.
For existing V8 installations and 6 cylinder applications use Kit No. 50-9809 that is 17-1/4" O.A.L.

The adapter crossmember support is designed around a replacement of the original manual transmission. If you are
replacing an automatic transmission, you will find that the crossmember support will hang too far down when it is bolted
to the bottom of our new adapter housing.

The adapter kit includes a new seal that must be installed into the front side of the New Process transfer case. The seal
will prevent fluid from mingling between the two gear boxes. A gasket must be used between the transfer case and the
adapter housing since we have eliminated the tailhousing seal that was originally in the previous adapter.

The adapter bolt pattern on the transfer case side has been equipped with two sets of bolt patterns. On vehicles 1989 and
newer, the rotation of the transfer case was slightly changed on certain model transmissions. This adapter can be used
on all vehicles.

SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific type of conversions. Modifications to any of the components will
void any possible warranty or return privileges. If you do not fully understand modifications or changes that will be required to complete your conversion, we strongly recommend
that you contact our sales department for more information. This instruction sheet is only to be used for the assembly of Advance Adapter components. We recommend that a
service manual pertaining to your vehicle be obtained for specific torque values, wiring diagrams and other related equipment. These manuals are normally available at automotive
dealerships and parts stores.

ADV ANCE ADAPTERS INC. P/N: 50-9804

P.O. Box 247, 4320 Aerotech Center Way New Item: (11/93)
Paso Robles, CA 93447 PAGE 2 OF 3
Telephone: [phone] Fax: [phone] Page Rev. Date: 02-02-00

GM TRUCK 4SP MODEL SM465 10 SPLINE

TO JEEP NP 21 SPLINE T/C

GM & CHEVY SM465 4 SPEEDS 1968 & UP:

This transmission can be identified by a case length of 12". The casting numbers on the case should be GM465452, 6273212
or 3901127. The top shift cover casting number should be GM3901131. The P.T.O. opening is available on both sides
of the main case. This transmission has a non-synchro first gear. The gear ratios for this transmission are as follows:

First Gear ......................6.56 Fourth Gear.... Direct

Second Gear ..................3.58 Reverse............6.09

Third Gear ..................... 1.70

In order to use this transmission with the Advance Adapters kits, you must make sure that you have the proper output shaft
from the original 4 speed transmission to couple to the new Advance adapter. Currently, we manufacture the adapters
for both 35 spline and 10 spline output shafts. This Kit uses a 4WD 10 spline output shaft. Make sure that the spud shaft
and the main shaft do not bottom out causing interference and eventual bearing failure. If your transmission has a 32 spline
output shaft, then you will be required to change to the other designs listed. The correct transmission can be found in all
two wheel drive vehicles, 1968 and up, and all four wheel drive vehicles, 1968-80. The transmissions which are not
compatible are 1981 and up four wheel drive K1, K2. The four wheel drive K3 models are equipped with a 10 spline output
shaft that can be used with our kits. The part numbers for the new shaft, if required, are as follows:

GM Part No. 6259663 - Output shaft with 10 splines
GM Part No. 3932265 - Output shaft with 35 splines

The shaft has a rear bearing that is retained with either a snap ring or special lock nut. Without this snap ring or lock nut
in the proper position, the shaft will walk forward into the input shaft causing severe damage. Make sure that the shaft
is locked by either the lock nut or snap ring to avoid severe damage.

The new spud shaft that Advance Adapters has furnished with your kit must slip over the output shaft without bottoming
out or causing spline interference. With the spud shaft in position and the adapter on the new transmission, you must
be able to rotate the shaft freely. There are certain applications that may require a slight grinding of the original output shaft
to prevent the original shaft from bottoming out inside the new Advance Adapter coupler.

The adapter plate that we have furnished for your new transmission has a special pocket that has been machined into the
transmission side for clearance over the reverse counter shaft. Make sure that the counter shaft in the transmission is
rotated for proper engagement into the new adapter housing.

The right side of the main case will need to be ground off for clearance of the front output yoke on certain installations.
We recommend a trial fit with your transfer case and front output yoke so that any modifications that may be required can
be done before final installation. This is a good time to set up the shifter linkage for the transfer case controls.

Make sure that the adapter fits flush against the back of the transmission and indexes properly over the two bearings. You
must use the gasket provided between the adapter housing and transfer case. This will prevent oil from exiting between
the two.

SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific type of conversions. Modifications to any of the components will
void any possible warranty or return privileges. If you do not fully understand modifications or changes that will be required to complete your conversion, we strongly recommend
that you contact our sales department for more information. This instruction sheet is only to be used for the assembly of Advance Adapter components. We recommend that a
service manual pertaining to your vehicle be obtained for specific torque values, wiring diagrams and other related equipment. These manuals are normally available at automotive
dealerships and parts stores.