Advance Adapters 716133 - Manual (Page 2)

JEEP AMC TURBO 400 TO
CHEVY & BUICK ENGINES
ADVANCE ADAPTERS INC. P/N: 716133
P.O. Box 247, 4320 Aerotech Center Way
Paso Robles, CA 93447
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Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 07-07-00
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.
AMC TURBO 400 3 SPEED AUTOMATIC:
The AMC TH400 has a case length of 24-3/4", 13 bolts for holding the oil pan in position. This AMC TH400 case when
used with the Chevy engine will require this adapter Kit No. 716133.
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.
When replacing the original AMC engine with a Buick or Chevy engine, you will need to purchase a new flexplate. The
flexplates are available in various tooth counts, so you must make sure that you obtain one that is compatible with your
new V8 engine. Chevy engines use a 153 tooth or 168 tooth flexplate. When selecting your flexplate, make sure that
it is compatible with your new V8 engine. The 400 cubic inch heavy V8 engines are externally balanced and will require
a weighted flywheel. Engines 1986 and newer will have a different engine crank bolt pattern than the earlier models.
The spacers that are used between the AMC torque converter and the new flexplate are .620" wide and will provide the
proper spacing of the torque converter.
It is very critical that the torque converter be positioned into the transmission pump so that all three splines are properly
engaged. This requires three different steps as the torque converter fits into the front of the transmission. To verify
the proper torque converter location, you should have approximately one inch between the face of the transmission and
the torque converter bolt pads.
FAILURE TO ACHIEVE THIS 1" DIMENSION WILL RESULT IN TRANSMIS-
SION FAILURE. After the transmission adapter plate and engine are all assembled, you must then install the 3 bolts
that hold the torque converter and flex plate together. CAUTION: Make sure that the converter pulls outward to the
flexplate approximately 1/8" in order to prevent unnecessary pressure on the transmission pump. The 3 spacers are
.620" thick and will work properly for most applications. If additional clearance is necessary, then the spacers will need
to be modified to obtain the proper clearance. Without this clearance, severe transmission damage can occur.
Both the AMC TH400 transmission and the GM engine block will have the same dowel pin alignment locations. Make
sure that the pins engage all three components to assure proper alignment.
The converter support bushing must be installed into the back of the engine crank for indexing the nose of the torque
converter.
Some of the stock AMC torque converters had different diameter bolt holes to fasten the converter to the stock flexplate.
Applications that had a torque converter with 5/16"-18 bolt holes will be required to change the torque converter to one
with the proper 3/8" diameter holes. A stock GM torque converter can be used.