Advance Adapters 50-4200 User Manual

ADVANCE ADAPTERS, INC P/N: 50-4200

P.O. Box 247, 4320 Aerotech Center Way Old Part No:711042
Paso Robles, CA 93447 PAGE 1 OF 2
Telephone: [phone] Fax: [phone] Page Rev. Date: 09-27-10

FORD C4 AUTOMATIC - BRONCO

DANA 20 (1966-76)

KIT CONSISTS OF:
No. Qty Part No. Description

1. 1 51-2500 CASTING (Ref: 711125)

2. 1 52-2500 SHAFT (Ref: 711325)

3. 1 716061 VENT

4. 1 716223 RETAINER

5. 1 716513 GASKET

6. 1 716713 SEAL (C-R #18676)

7. 1 716714 O-RING

8. 1 716455 SNAP RING

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: 50-4200

P.O. Box 247, 4320 Aerotech Center Way Old Part No:711042
Paso Robles, CA 93447 PAGE 2 OF 2
Telephone: [phone] Fax: [phone] Page Rev. Date: 11-07-97

FORD C4 AUTOMATIC - BRONCO

DANA 20 (1966-76)

INSTALLATION INSTRUCTIONS:

This kit is designed to install a Ford C4 automatic to an early Bronco transfer case. To install the new main shaft supplied
with this kit, the C4 must be disassembled. If the transmission selected was manufactured before 1970, slight modifications
may be necessary. The early C4's have a long pump shaft. This may have to be ground for adequate clearance. A small
plug is installed at the end of every shaft. Before installing the main shaft, double check that this plug is installed.

With the new main shaft installed, insert the seal supplied into the adapter casting--open side towards the C4. Next,
determine if the transmission is vented in the tailshaft housing or in the case. If in the tailshaft housing, a hole will have
to be drilled in the adapter and a vent cap installed. Trial fit the adapter casting onto the C4 case to check for clearance
with the shift arm. Grind additional clearance if necessary. Place gasket (not supplied in kit), between the C4 case and
adapter casting and secure together. Torque original bolts to 35 ft/lbs.

FORD C4 AUTOMATIC TRANSMISSIONS

The Ford C4 automatic transmission has a case length of 11-1/8", 11 bolts for holding the oil pan in position and has a
removable front bellhousing. The bellhousing is available for 289, 302, 351C and 351W Ford engines. There is two different
main case options that are referred to as either a flared case or a step case. The step case has the oil dipstick entering the
transmission case, while the flared case has the dipstick entering the transmission pan. Both models are acceptable for
use with all the Advance Adapters kits. The V8 bellhousing length is 5-7/8" and can be interchanged with the 2.8 V6
bellhousing on Bronco II and Ranger conversions. On transmissions 1970 and earlier, the pump shaft was slightly longer
and will require shortening for use with our new output shafts. The transmission should be assembled by a competent
mechanic to make sure the transmission operates correctly. The new shaft should be identical to the original shaft with
the only exception being the new splined area for use with the transfer case adapter.

Most C4 transmissions have a breather on the main case of the transmission. There are a few applications where the breather
is installed into the tailhousing. We have included with your kit a new breather for installation into your new adapter housing
only on transmissions that require vented tailhousing. The installation procedure is to simply drill an 11/32" hole in the top
portion of the new tailhousing and press the new vent plug into position. If this is not done on transmissions equipped with
vented tailhousings, then you will have extreme pressure and leakage out the transmission dip stick.

When installing the new tailhousing on the back of your transmission, it may be necessary to trial fit the adapter in position
and make sure that the linkage has all the proper clearance on the internal cavity of the adapter. The bolting of the tailhousing
to the main transmission may need a slight amount of grinding for proper head clearance due to the aluminum sand casting
tolerances. 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.

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.

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.