B&M HAMMER CONVERSION KIT User Manual
Installation Instructions
C-4, C-5, & C-6 Conversion Kit for
Mustang Console Hammer Shifter
Part No. 81020
©2002, 1999 by B&M Racing and Performance Products C
The B&M Mustang Hammer C-4
Conversion Kit is intended for use
in a 1982-2000 Mustang that has had
a C-4, C-5, or C-6 transmission installed in place of the original AOD
transmission. This kit is used in conjunction with the B&M Mustang Hammer shifter (part Nos. 81001, 81002 or
81003). This kit includes a shifter
cable and transmission cable bracket
and shift lever for a C-4, C-5, and C-6
transmission.
Please read the instructions and
review the illustrations thoroughly before beginning the installation. The
installation of the shifter into the car
is covered in the instructions with the
shifter itself as well as these instructions. Follow the steps as shown below.
INSTALLATION
STEP 1. Before the shifter is installed
in the car the Neutral safety switch,
the back up light switch and the cam
plate that operates the switches must
be installed on the shifter. Also a different cable pin must be installed on
the shifter to work with the B&M cable.
The cam plate is screwed onto shift
indicator arm with a #4 self tapping
screw. (See figure 1) Put a
lockwasher under the head of the
Printed in the U.S.A.
screw. If your shifter does not have this
hole drilled, use template #1 and drill
a .098” dia. (#40 drill) hole to install
the cam plate.
The switches are installed as
shown in figure 2. The switch support is attached to the shifter base
plate with two #10 screws and nuts. If
these two holes are not drilled in your
shifter, drill two 7/32” holes using template #2.The two switches are installed
on the switch support with two #4
screws, nuts and lock washers. Put a
lock washer between the screw head
and the switch an each side in addition to the lock washer under the nut.
The cable pin on the shifter must
also be changed. (See figure 3) Remove the ball shaped cable pin and
replace it with the pin type cable pin
included in this kit. Tighten the nut
securely. The B&M cable bracket
spacer must also be installed. It is
secured to the BACK side of the
shifter cable bracket using the two #14
X 5/8” self tapping screws included
with shifter. (See figure 4)
STEP 2. Under the car remove the
nut and lockwasher holding the downshift linkage onto the downshift lever
shaft if there is any on your vehicle.
The downshift lever is the outer lever
on C-4, C-5, and C-6 transmissions.
Pull the lever off the shaft and allow
the linkage to hang free. Most C-4, C5, and C-6 transmissions have a Neutral safety/Backup light switch on the
transmission shift lever. If your transmission is so equipped, remove the
two bolts holding the switch in place
and slide it off the shift shaft. Disconnect the switch at the factory plug and
discard it. You will need to connect
the Neutral safety switch and backup
light switch wiring that is in this wiring
harness to the switches on the shifter.
STEP 3. Install the B&M selector le-
ver, (See figure 6 or 7). Note: The
B&M lever must point downward for
proper operation. If the stock shift lever on your transmission points down,
you will have to remove the lower part
of the stock arm by cutting it off to
clear the B&M lever, (See figure 6 or
7). Install B&M selector lever onto shift
shaft of transmission. Align selector
lever so when it points straight down it
travels equal arcs in both directions
from center, then tighten 1/4"-20 x 1
1/2" pinch bolt and nut. The lever
should travel smoothly from front to
back with a positive click in each gear
position. Make sure O-ring is in position on downshift shaft and install
downshift lever in position on shaft.
Install lockwasher and nut and tighten
9500696-02
Cam Plate
round top(shown) for:
81002 & 81003
flat top(not shown) for:
81001
Shift
Indicator
Arm
#4 Screw
NOTE: the shift indicator arm is slightly
different in appearance then what is
shown above for 81001 models.
Switches
Switch
Support
Figure 1
securely. Downshift lever must operate smoothly. Reconnect downshift
linkage, if used.
STEP 4. C-4/C-5 Cable bracket installation: Remove the two lower bolts
from the rear servo cover. Install cable
bracket in position, (See figure 6). In-
stall two servo cover bolts as removed
and tighten 12-13 lb-ft. Do not over
tighten as this can distort servo cover.
C-6 Cable bracket installation:Remove
the two transmission oil pan bolts from
the left rear corner of the oil pan. Install the cable bracket in position (See
Figure 7) with two spacers between
the pan and the bracket. (If your transmission is equipped with a cast aluminum oil pan, these spacers can be
omitted.) Install the two 5/16-18 x 1.00"
bolts supplied and tighten to 12-13 lbft. Do not overtighten as this can damage the pan gasket.
STEP 5. Install the shifter in the car
as described in the shifter installation
instructions. Continue through step 3.
Then install the supplied B&M cable
in the car, routing the cable the same
as the original Ford cable. Attach it to
the underbody in the same locations
as the Ford cable. Do not route it close
to the exhaust. Connect the cable to
the cable bracket spacer. The tab on
Figure 2
the cable goes on the front side of
cable bracket spacer.
Remove the two rubber boots, one
large nut, and a large lockwasher from
the threaded end of the shifter cable.
Slide the end of the cable into the
cable bracket, Install large nut and
lockwasher loosely over end of cable.
Install two rubber boots onto end of
cable. Install the swivel on the threaded
end of the cable and position it in the
center of the threaded portion.
STEP 6. Move the transmission selector lever by hand to full rear position
(LOW). Place the shifter lever to the
low gear position (ratcheted all the
way back). Adjust the large nuts on
the cable so that the swivel will slide
into the hole on the selector lever.
Tighten the large nuts completely. Be
sure that the swivel will slide freely in
and out of the hole in the selector lever.
Adjust the cable with the procedure shown here, rather than the procedure in the shifter instructions. With
the swivel in the selector lever, ratchet
the shifter to PARK position, as far
forward as the shifter will go without
forcing it. The shift lever on the transmission should be all the way forward.
Check to see that the swivel will slide
freely in and out of the hole in the lever
in this position. If it does not slip in
freely, adjust the swivel slightly until it
will slip into the hole in the lever in both
LOW and PARK positions. Operate
shifter through all gear positions.
Check to make sure swivel will slide
in and out of the selector lever hole in
each gear position. Install cotter key
supplied with shifter into swivel and
spread key ends.
If you have a problem, DO NOT
FORCE THE SHIFTER, this will damage the cable, the shifter or the transmission. Simply start at the beginning
and carefully check all your steps.
If your vehicle has an ignition and/
or brake interlock adjust the interlock
cable as shown in the shifter instructions.
In addition to wiring the indicator
light in the shifter, it will be necessary
to hook up the Neutral safety and
Backup light switches on the shifter.
In the plug that originally connected
to the switch on the transmission locate and identify the Neutral safety
switch wires. (The engine will not crank
unless these wires are connected together), and backup light wires. Disconnect Battery ground cable before
beginning to wire the Neutral safety
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