User Guide

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the steering column lock, it must be blocked

in the “Park” position as described above.

NOTE: Shifter installation may require con-

sole modification or complete console re-

moval depending on the space available in

your vehicle.

STEP 3. Assemble the mounting bracket

as shown in figure 1. Be sure that the end

plate with the wide slot on top is to the front

and that the top plate has the three holes at

the front. Assemble the bracket with the

four 1/4-20 x 3/4" screws finger tight. Put a

flat washers on both sides of the brackets

and a lock washer under the nut.

Pull the carpet away from the floor-

board where the shifter mounting bracket

is to be located. Place the shifter on the

mounting bracket and slide the front and

rear brackets up or down to get the desired

height for the shifter. Tighten the four

screws on the bracket. If the vehicle has a

bench type seat, move seat to the full

forward position. With the stick shifted to

the rearmost gate position. Locate the

shifter for ease and convenience of opera-

tion, see figure 2. Make sure the trigger

and T-handle clear the dash with the shifter

in the “Park” position. Mark the position of

four mounting holes for the bracket as-

sembly on the floor.

STEP 4. Drill four 9/32" mounting holes

where marked. Temporarily mount the

shifter to the mounting bracket and bolt the

bracket to the floor. If the floor is not flat

bend the tabs at the end of the front and

rear bracket. Mark the location for the

shifter cable hole in the floor. The hole will

be 1" inboard of the left front mounting

bracket to floor bolt and between 2-1/2"

and 3-1/2" ahead of this bolt. (The hole will

be 3-1/2" ahead if the bracket is at maxi-

mum height and 2-1/2" ahead if the bracket

is adjusted to minimum height. Drill or cut

1-1/2" diameter cable hole in floorboard.

NOTE: Some floorboards are extremely

thin and will not adequately support the

shifter mechanism when bolted to the floor.

For those vehicles we recommend that

Printed in U.S.A.

9500512-02

Installation Instructions

Light Truck MegaShifter

Part No. 80680

The B&M Light Truck Megashifter

shifter is designed to be used in most light

trucks equipped with most popular three

speed or four speed automatic transmis-

sions. Your B&M Megashifter comes

equipped with Neutral safety and backup

light switches, transmission brackets and

levers and a five foot shift cable. Optional

shifter cables in 2 ft.(80830), 3 ft.(80831),

4 ft.(80832), 8 ft.(80834), 10 ft.(80835)

and 12 ft. (80836) are also available. To

use the B&M Light Truck Megashifter

with the Ford AOD transmissions you will

need optional accessory kit #40496.

This shifter has adjustable height

mounting brackets so that it can be in-

stalled at the best height for your truck.

Because the front and rear mounting brack-

ets can be adjusted separately, it can also

be install on an angled or sloping floor with

the shifter mounted flat.

To use this shifter with a GM four speed

automatic transmission (TH-700R4 or TH-

200 4R) you will need to remove the three

speed blocker bolt and nut. (See figures 1

and 3.) For the Ford AOD four speed

transmission do not remove this bolt.

Please read the instructions and re-

view the illustrations thoroughly before

beginning the installation.

The mechanical components of this

shifter are precision made and assembled

at our factory. Any modification or disas-

sembly of these parts can cause the shifter

to malfunction and will void the warranty.

You should disassemble only those items

outlined in the instructions.

The vehicle should be about 2 feet off

the ground for ease of installation. Use

jack stands, wheel ramps or a vehicle lift.

Make sure the vehicle is firmly supported

before attempting to work on it.

IMPORTANT: If your vehicle is equipped

with a locking steering column, securing

the column lock lever in the engine com-

partment in the full up position will allow the

steering wheel to be locked and unlocked

and the ignition key to be removed.

WARNING: This allows the steering wheel

to be locked WHENEVER the ignition key

is turned to the “lock” position WHILE THE

VEHICLE IS MOVING, OR AT ANY

OTHER TIME. Securing the steering col-

umn lock lever in any other position will

both PREVENT the steering wheel from

locking and removal of the ignition key.

INSTALLATION

NOTE: If you are installing this shifter with

a GM TH-700R4 or TH-200 4R four speed

automatic transmission you must remove

the bolt and nut indicated in figures 1 and

3. Removing this bolt gives the shifter four

forward positions rather than three. For

Ford AOD four speed transmissions do

not remove this bolt and nut, since this

transmission has only three forward posi-

tions. Also do not remove the bolt and nut

for three speed automatic transmissions.

STEP 1. Locate the shifter on the floor of

the truck where you want it to be located.

The mounting brackets can mount the

basic shifter assembly 1-1/2" to 3-5/8"

above the floor. Figure 2 gives the dimen-

sion of the shifter, so be sure that there is

enough room where you will be mounting

the shifter.

STEP 2. Remove stock shift linkage;

Column Shifters: Remove all rods, levers

or cables from column and transmission.

Place column shift lever in “Park” position.

Remove pin holding shift lever in column

and remove lever assembly. If your vehicle

is equipped with a locking steering col-

umn, secure the column lock lever in the

full up position. WARNING: This allows

the steering wheel to be locked and igni-

tion key removed WHENEVER the igni-

tion key is turned to the “lock” position

WHILE THE VEHICLE IS MOVING, OR

AT ANY OTHER TIME.

Console Shifters: Remove shifter mecha-

nism from console. Disconnect rod or cable

from transmission. Remove cable bracket

if equipped. If there is a cable or linkage

from the console shifter or transmission to

Summary of content (8 pages)

PAGE 1
Installation Instructions Light Truck MegaShifter Part No. 80680 © B&M Automotive Products 1995 The B&M Light Truck Megashifter shifter is designed to be used in most light trucks equipped with most popular three speed or four speed automatic transmissions. Your B&M Megashifter comes equipped with Neutral safety and backup light switches, transmission brackets and levers and a five foot shift cable. Optional shifter cables in 2 ft.(80830), 3 ft.(80831), 4 ft.(80832), 8 ft.(80834), 10 ft.(80835) and 12 ft.
PAGE 2
Boot 10-32 x 3/4" Pan head Cover plate Tower 10-24 x 1/2' flat head #4-40 x 1-1/4 screws, nuts and lock washers 1/4" nut and lockwasher Cable pin Cable attaching tab goes on outside surface of shifter base Remove this nut and bolt for GM four speed transmissions 1/4-20 x 1/2" screw Backup light switch Neutral safety switch Locking holes 1/4-20 x 1-1/2 full thread screws E-Ring Mounting base 1/4-20 x 3/4" screw with flat washer and lock washer 1/4-20 x 3/4" screw with 2 flat washers and lock was
PAGE 3
Figure 2 card stock lever and stock shifter linkage. Install B&M selector lever in position using stock selector lever nut, (See figure 5). Torque nut to 23 lb. ft. The lever should move smoothly from front to rear with a positive click in each gear position. STEP 11. Remove two transmission oil pan bolts from the middle of the left side of the oil pan. Install cable bracket in position, (See figure 5.) The bracket must be installed with two spacers between the pan and bracket.
PAGE 4
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. STEP 14. On GM vehicles the neutral safety switch may be located on the shifter (steering column or console), or it may be a mechanical interlock in the steering column that prevents the key from turning to the Start position unless the shifter is in the Park or Neutral position. Identify the type of neutral safety system you have.
PAGE 5
Ford C-4 and C-5 1/4 x 1-1/2" bolt, lockwasher and nut 7/16" nut Ford lever C-4 cable bracket Cable swivel Cotter pin Remove shaded portion of lever Figure 6 cutting it off to clear the B&M lever, (See figure 6 ). 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.
PAGE 6
Chrysler A-727 and A-904 1/4" x 1-1/2" bolt, lockwasher, nut Chrysler lever 7/16" nut Cable swivel Cotter pin Chrysler cable bracket 5/16" x 1" bolt and spacer Figure 8 used on Ford transmissions. Trying to force swivel and spread key ends. If you have a problem, DO NOT FORCE the cable will damage the cable.) The shift lever on the transmission should be all the THE SHIFTER, this will damage the cable, way forward. Check to see that the swivel the shifter or the transmission.
PAGE 7
as this can damage pan gasket. STEP 23. Route the shifter cable according to figure 4. Avoid kinks and sharp bends and route the cable away from hot engine or exhaust parts. 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.
PAGE 8
STEP 33. Slide the boot over the stick and install it into the cover plate. After the boot is installed in the cover plate and into the stick install the T-Handle and jam nut. Tighten the jam nut when the handle is properly oriented. OPERATION The B&M Light Truck Megashifter normally functions as a straight gate detent shifter from Park to Reverse to Neutral to Drive and as a ratchet shifter from Neutral to all forward gears.