Advance Adapters 50-6901 User Manual

ADVANCE ADAPTERS INC. P/N: 50-6901

P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711069-208
Paso Robles, CA 93447 PAGE 1 OF 2
Telephone: [phone] Fax: [phone] Page Rev. Date: 08-26-14

GM 700R-4 REPLACING TH400 1985-91

NEW PROCESS 205, 208, or 241

KIT CONSISTS OF:

No. Qty Part No. Description

1. 1 51-6901 ADAPTER PLATE (Ref: 711169-400)

2. 1 52-6901 OUTPUT SHAFT (Shaft Must Be Shortened) (Ref: 711369-208)

3. 1 716082 700R PLASTIC WASHER

4. 1 716510 TH400 GASKET

5. 1 716511 GASKET "O"-RING

6. 4 720046 S.H.C.S. (Metric)

GM 700R-4 4 SPEED AUTOMATIC:

The General Motors 700R-4 has a case length of 23-3/8", and is available in two different engine to transmission bolt
patterns. The case is available with a Chevy bolt pattern that has the top two holes 8-1/4" apart or in a Buick bolt pattern
that have the top two holes 7" apart. The rear side of the transmission case should have a square bolt pattern that uses
4 bolts. There are several various lengths of output shafts that these transmissions have been furnished with, so you must
make sure the proper shaft has been installed into the transmission for use with our transfer case kit. The speedometer
gear is normally located in the tailhousing, but when adapting it to the transfer case, the location will change to the back
side of the transfer case. The rear transmission support is located in the main case just forward of the tailhousing
connection. This can be used for supporting the crossmember on some installations, but most of our kits provide support
on the new adapter housing.

NOTE: If using this kit in conjunction
with our 50-0405 adapter, the reluctor
ring will require to be modified. The
inner lip of the reluctor must be opened
up to fit over the 32 spline shaft.

When installing the new transfer case adapter, make sure that the input gear and the output shaft do not bottom out. We
have found on occasion that a transmission output shaft or a input gear may be slightly longer than what we have allowed
for when coupling together. GM did use two different length input gears in the NP205 transfer cases. This kit is designed
around the short style input gear. DO NOT FORCE THE NEW TAILHOUSING ONTO THE TRANSMISSIONS. If
assistance is needed, please feel free to call us on our toll free number [phone].

When assembling the adapter housing to the transmission case, we have provided you with a new square type "O" ring
seal to prevent fluid leakage. This seal is a stock GM item that is used on all 700R-4 installations. On most installations,
a slight pan modification may be required for clearance of the front Universal yoke. In order to allow for additional front
driveline clearance, we recommend that the engine and transfer case be offset to the driver's side on vehicles having front
driveshafts located on the passenger's side.

The assembled length of the new transmission, adapter plate and original TH400 spacer housing will be exactly the same
length as the original TH400 assembly so no driveline modifications will be required.

When replacing SM465, you will need to get a stock TH400 adapter. Our P/N 51-7000 will work with the NP208
and 241 T/C and depending on the input length of the NP205, it can work with some modifications for shifting
linkage.

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.

ADVANCE ADAPTERS INC. P/N: 50-6901

P.O. Box 247, 4320 Aerotech Center W ay Old Part No: 711069-208
Paso Robles, CA 93447 PAGE 2 OF 2
Telephone: [phone] Fax: [phone] Page Rev. Date: 06-21-02

GM 700R-4 REPLACING TH400 1985-91

NEW PROCESS 205

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.