Advance Adapters 50-6000 - Manual (Page 2)

MUNCIE 4-SPEED TRANSMISSION TO
JEEP DANA 300 TRANSFER CASE
ADVANCE ADAPTERS INC. P/N: 50-6000
P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711060
Paso Robles, CA 93447 PAGE 2 OF 3
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 10-14-93
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.
MUNCIE 4 SPEED 1963-1974
This transmission can be identified by an aluminum case that is 10" long and a side cover having 7 bolts. The reverse
shift lever will be coming out of the aluminum tailhousing. The front bearing retainer will have a diameter of 4.648" which
will require the transmission to be used with car-type bellhousings.
This adapter kit is for the General Motors Muncie 4 speed transmission. The new shaft included with this adapter will
fit all models from 1963 to 1974. The only exception is that in 1963, the first gear main shaft design was changed so
first gear rode directly on the main shaft. If your transmission is a 1963, then you will need to purchase a new first gear
and first gear bushing. The adapter housing is a direct copy of the original tailhousing that your transmission was equipped
with. You will need to disassemble the shift lever shaft, steel ball, and spring for re-assembly into the new adapter. The
original tapper pin must be reinstalled to hold the reverse gear shaft in position. A new seal has been provided to prevent
leakage out the reverse gear shaft The seal must be installed with the open side towards the transmission.
The total overall length of the transmission and adapter will be longer than your original transmission and on most
conversions, will require driveshaft modifications. The adapter has provisions for mounting an optional crossmember
mount as illustrated. Depending on the exact vehicle that this transmission is being installed into, you may require
modifications to the clutch linkage, overdrive shifter bracket, and transfer case control linkage.
The adapter is set up for use with a Hurst Competition Plus shifter that can be bolted onto the new casting by using shifter
bracket No. 715501. This bracket will accept all Hurst shifters. Special shifter linkage will be required since the shift
tower location is so much further forward than on 2WD installations. We offer two different rod kits for use with this
transmission. The rod kits are P/N 715625 (for transmissions that have studs on the shift levers) and P/N 715626 (for
transmissions that have female threads).
Since we have eliminated the seal between the transfer case and transmission, you will need to gasket and silicone the
adapter to transfer case area.
Gear Ratios:
First Second Third Fourth
2:54 1.88 1:46 1:00
2:20 1:64 1:27 1:00