Advance Adapters 50-8501 - Manual (Page 2)

GM TH400 AUTOMATIC TO
GM NEW PROCESS 207 S10-S15 4WD
ADVANCE ADAPTERS INC. P/N: 50-8501
P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711085-T400
Paso Robles, CA 93447 PAGE 2 OF 2
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 03-23-93
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.
GM TH400 3 SPEED AUTOMATIC:
The GM TH400 has a case length of 24-3/4", 13 bolts for holding the oil pan in position and is available in 3 different engine
to transmission bolt patterns. Make sure you have selected the proper TH400 for your particular engine. The rear side
of the transmission case will have a hex shaped bolt pattern that uses 6 bolts. There are several various lengths of output
shafts that these transmissions has been equipped with and all of our new output shafts will be interchangeable with your
transmission. The new shaft supplied with your kit should be installed by a competent mechanic. The speedometer gear
is normally located in the tailhousing, but when adapting it to the transfer case, the location will change to the backside
of the transfer case. The rear transmission support will now be located on the new adapter housing or in some cases, on
the transfer case..
When installing the new transfer case adapter, make sure that the coupler and the output shaft do not bottom out. We have
found on occasion that a transmission output shaft may be slightly longer than we have allowed for; and when coupling
into our new spud shaft, we find a small amount of interference. The adapter housing and spud shaft must be assembled
to the back of the transmission without interference DO NOT FORCE THE NEW TAILHOUSING ONTO THE
TRANSMISSION. If assistance is needed, please feel free to call the number listed above.
When assembling the adapter housing to the transmission case, we have provided you with a new gasket to prevent fluid
leakage. This gasket is a stock GM item that is used on all TH400 installations.
If you have selected a transmission that has the old style modulator, the we recommend the use of the Advance Adapters
adjustable modulator Part No. 716010. This will also allow for additional driveshaft clearance.
All installations will require the use of a transmission cooler. The cooler can be either installed in the radiator or a remote
location is acceptable. The transmission shift control can either be a Hurst floor mounted type shifter or sometimes the
existing column shift can be modified on certain applications
This adapter must be used in conjunction with the original GM adapter housing and transfer case linkage control bracket.
Vehicles that were previously equipped with a manual transmission will need to purchase these items from their local Chevy
dealer.