1967 CHEVROLET CAMARO transmission

CLUTCH AND TRANSMISSIONS 7-15

LOCATING

GAGE B

N

Fig.
1C - Warner T-16 3-Speed Lever and Linkage Adjustment (Camaro and Corvette)

Clearance should be .002 to .008. Interlock sleeves

are available in four sizes to give the proper

clearance.

6. Install outer shifter levers to shafts with lock wash-

ers and nuts. Tighten securely. v

7.
Instill shifting forks to shift levers (1st and re-

verse fork "hump" towards bottom).

Installation

1.
Install new side cover gasket to transmission case,

install cover and secure with lock washers and cap

screws.

NOTE: The two rear side cover to case at-

taching bolts have a special oil sealing spline

and must be used at these two "through" hole

locations.

2.
Connect control rod and cross shaft to control

levers.

1.
Side Cover

2.
Poppet

3. 1st and Reverse Shifter

Lever and Shaft

4.
Poppet Spring

5. 1st and Reverse Shifter

Fork
6. Interlock Pin

7. 2nd and 3rd Shifting

Fork

8. Interlock Sleeve

9. 2nd and 3rd Shifter

Lever and Shaft

10.
"O11 Ring Seal

Fig.
2C - Side Cover Assembly - Layout

CHEVROLET CHASSIS SERVICE MANUAl

CLUTCH AND TRANSMISSIONS 7-16

FOUR-SPEED TRANSMISSION (MUNCIE)

INDEX

Page

General Description 7-16

Maintenance and Adjustments 7-16

Shift Linkage Adjustment 7-16

Gearshift Lever Reverse Blocker Cable 7-17

Replacement . 7-17

Adjustment 7-17

Speedometer Driven Gear and Oil Seal 7-19

Replacement 7-19

Transmission Side Cover 7-19

Removal 7-19
Page

Disassembly 7-19

Assembly 7-19

Installation . 7-19

Extension Oil Seal ......... 7-19

Replacement 7-19

Component Parts Replacement 7-20

Transmission Replacement 7-20

Removal from Vehicle , 7-20

. Installation in Vehicle . . . 7-20

GENERAL DESCRIPTION

The four-speed synchromesh transmission incorpo-

rates helical gears throughout specially designed to pro-

vide high torque capacity without additional weight, and

gear teeth proportioned to operate at high speeds with

neither excessive heat generation nor excessive fric-

tional losses. Shafts, bearings, high capacity clutches

and other precision parts are held to close limits, pro-

viding proper clearances necessary for durability during

extended heavy usage.

The main drive gear is supported by a heavy-duty ball

bearing at the front end of the transmission case and is

piloted at its front end in an oil impregnated bushing

mounted in the engine crankshaft. The front end of the

mainshaft is piloted in a row of roller bearings set into

the hollow end of the main drive gear and the rear end

is carried by a heavy-duty ball bearing mounted at the

rear end of the transmission case in a retainer casing.

The counter gear is carried on a double row of rollers

at both ends while thrust is taken on thrust washers lo-
cated between the ends of the gear and the thrust bosses

in the case.

The two-piece reverse idler gear is carried on bronze

bushings while thrust is taken on thrust washers located

between the front of the gear and the back of the reverse

idler thrust boss and between the rear of the gear and the

reverse idler shaft boss in the case extension.

Gearshifting is manual through shift control rods to the

transmission cover shifter levers for first through fourth

gears,
and to the reverse lever located in the case ex-

tension. The shifter lever to the rear of the transmis-

sion cover controls first and second gears while the

lever to the front controls third and fourth gears. All

four forward gears are fully synchronized. The trans-

mission may be used as an aid in deceleration by down-

shifting in sequence without double clutching. Reverse is

not synchronized, however, it is a helical gear to insure

quiet operation.

MAINTENANCE AND ADJUSTMENTS

SHIFT LINKAGE ADJUSTMENT (EXC. CORVETTE

AND CAMARO) (Fig. 1m)

1.
Set Transmission Levers (M), (P) and (S) in neutral

detent position.

2.
Move Shift Lever (A) to neutral detent position and

insert a Locating Gauge (1/8" thick by 41/64" (.646)

wide and 3" long) (B) into Control Lever Bracket

Assembly slot.

3.
Install Rod (V) with retainer on Lever (D).

4.
Maintaining Lever (D) against Locating Gauge, ad-

just Clevis (T) at Lever (S) until clevis pin freely

passes through holes in Clevis and Lever.

5. Install clevis pin, washer, and cotter pin. Tighten

Jam Nut (U) against Clevis.

6. Install Rod (H) with retainer on Lever (W).

7. With Jam Nuts (J) and (L) and Swivel (K) loose on

Rod (H), insert and attach Swivel with washer and

retainer to Lever (M).

8. Maintaining Lever (W) against Locating Gauge (B)

and while holding Swivel (K), run Jam Nut (J) against

Swivel until Nut contacts Swivel. Then tighten Jam

Nut (L) against Swivel.

9. Install Rod (R) with retainer on Lever (P).

10.
With Jam Nuts (E) and (G) and Swivel (F) loose on

Rod (R), insert and attach Swivel with retainer to
Lever (C).

11.
Maintaining Lever (C) against Locating Gauge (B) and

while holding Swivel (F), run Jam Nut (G) against

Swivel until Nut contacts Swivel. Then tighten Jam

Nut (E) against Swivel.

12.
Remove Locating Gauge and check shifts to insure

proper operation. Readjust clevis and swivels if

necessary.

NOTE:
Control rods may be attached to trans-

mission shift lever lower holes, to reduce shift

lever travel, for a "faster shift" adjustment op-

tion.
Increased shifting effort is required when

control rods are installed in this "short throw"

position.

CORVETTE AND CAMARO SHIFT LINKAGE

ADJUSTMENT (Fig. 2M)

1.
Set Transmission Shift Levers in neutral position.

2.
Move Shift Lever (A) to neutral position and insert

Locating Gauge (C) into control Lever Bracket As-

sembly (B).

3.
Install Reverse Rod (J) with Retainer on Lever (O).

4.
With two Jam Nuts and Swivel loose on Rod (J) insert

and attach Swivel with Retainer to Lever (D).

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-17

VIEW A

Fig.
1M - Four-Speed (Muncie) Transmission Gearshift Linkage (Chevrolet Shown)

5.
Repeat steps 3 and 4 for Hod (K) and (L).

6. Remove Locating Gauge and check shift to insure

proper operation.

GEAR SHIFT LEVER REVERSE

BLOCKER CABLE (Fig. 3M)

Replacement

In the event replacement is necessary use the following

procedure.

1.
Remove seat separator (console) assembly.

2.
Remove shift lever seal retainer and slide seal up

on lever.

3.
Remove shift lever knob, and the 2 lever to bracket

retaining nuts and remove the lever assembly.

4.
Replace blocker cable - thread new cable up through

lever and MT" handle and install cable retainer

through access slot. Adjust retainer to hold blocker

end .010/.020" above lever bracket surface, then lock

and cut off excess cable.

5.
Reverse Steps 1, 2 and 3 to install.
Figure 3M shows the adjustment and lubrication proce-

dure for the mechanism. This Figure applies to both

models of lever assemblies.

NOTE: If, for any reason, the cable assembly

is removed from the handle, it is difficult to in-

stall without rework. This is due to the fact that

the extra length of the cable is trimmed after

assembly and, therefore, it is almost impossible

to get the shortened cable to enter the cable hole

in the cylindrical retainer.

If new service cable assemblies are not available, the

original part can be re-used by butt soldering a 2.00 inch

piece of small wire to the cable end. Trim the solder

joint so that it will pass through the hole in the retainer.

After assembly, trim off the excess wire as shown in

Figure 3M.

Adjustment

1.
With set screw loose, assemble cable through hole

in cylindrical retainer above handle.

CHEVROLET CHASSIS SERVICE MANUAL

CWTCH AND TRANSMISSIONS 7-18

LEVER (A)

BRACKET (B)

GAGE

5LOT(C)

ROD(J)

VIEW A

Fig.
2M - Four-Speed (Muncie) Transmission Gearshift Linkage Camaro & Corvette (Typical)

HANDLE

BUSHING

(3 REQ'D.)
KNOB

CABLE TUBING

CABLE ASSEMBLY

LEVER

LEVER ASSEMBLY
LUBE I.D. OF

LEVER WITH

20/30 WGT.

MOTOR OIL

ANTI RATTLE

"O"
RING
SET SCREW

COAT WITH

LUBRIPLATE

OR EQUIVALENT

.000/.020

Fig.
3M - Gearshift- Lever Assembly and Adjustment (Typical)

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-19

2.
With handle in full down position—adjust cable to ac-

quire dimension shown, be certain that cable is pulled

taut.

3.
Tighten set screw to 15-20 in. lbs.

4.
Bend excess wire and cut - be certain that wire does

not interfere with I.D. of lever or threads of shifter

knob.

NOTE: Handle must return freely from any

position.

SPEEDOMETER DRIVEN GEAR AND OIL SEAL

Replacement

Disconnect speedometer cable, remove retainer to

housing bolt and lock washer and remove retainer. In-

sert screw driver in slot in fitting and pry fitting, gear

and shaft from housing. Pry "O" ring in groove in fitting.

Install new "O" ring in groove and insert shaft Hold

the assembly so slot in fitting is toward boss on housing

and install in housing. Push fitting into housing until re-

tainer can be inserted in groove and install retainer lock

washer and bolt.
Fig.
5M - Installing Side Cover Assembly

TRANSMISSION SIDE COVER

Removal

1.
Disconnect control rods from levers.

2.
Shift transmission into second speed before removing

cover, by moving 1-2 (Rear Cover) shifter lever into

forward detent position.

3.
Remove cover assembly -from transmission case

carefully and allow oil to drain.

Disassembly (Fig. 4M)

1.
Remove the outer shifter lever nuts,*lock washers

and flat washers. Pull levers from shafts.

2.
Remove both shift forks from shifter shaft and detent

plate assemblies. Remove both shifter shaft assem-

blies from cover. Lip seals in side cover may now

be pryed out if replacement is required because of

damage.

1-2 DETENT CAM DETENT SPRING
3-4 DETENT CAM

1-2 SHIFTER SHAFT

1-2 SHIFT FORK
3-4 SHIFT

FORK

DETENT CAM \ 3-4 SHIFTER SHAFT

RETAINER RING

DETENT CAM PIVOT PIN
3.
Remove detent cam spring and pivot retainer "C"

ring. Remove both detent cams.

4.
Replace necessary parts.

Assembly (Fig. 4M)

1.
Install 1-2 detent cam to cover pivot pin first, then

install 3-4 detent cam so the detent spring notches

are offset or opposite each other. Detent cam

notches must be facing downward.

2.
Install detent cam retaining "C" ring to pivot shaft,

and hook spring into detent cam notches.

3.
Install both shifter shaft assemblies in cover being

careful not to damage lip seals. Install both shift

forks to detent plates, lifting up on detent cam to

allow forks to fully seat into position.

4.
Install outer shifter levers, flat washers, lock wash-

ers and nuts.

Installation (Fig. 5M)

1.
Shift 1-2 shifter lever into second speed (forward)

position. Position cover gasket on case.

2.
Carefully position side cover into place making sure

the shift forks are aligned with their respective

mainshaft clutch sliding sleeves.

3.
Install cover attaching bolts and tighten evenly to

15-20 ft. lbs. torque.

4.
Remove filler plug and add lubricant specified in

Section 0, to level of filler plug hole.

EXTENSION OIL SEAL

Replacement

1.
Remove propeller shaft.

2.
Pry out the extension oil seal.

3.
Prelubricate between sealing lips and press new oil

seal carefully into place in extension using J-5154 or

similar tool.

Fig.
4M - Transmission Side Cover/ Shift Fork and

Detent Assembly
CAUTION: Do not excessively force the seal

against the seat in the extension.

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH
AND
TRANSMISSIONS
7-20

COMPONENT PARTS REPLACEMENT

3.

4.

5.

6.
TRANSMISSION REPLACEMENT
(EXC.
CORVETTE)

Removal From Vehicle

1.
Remove shift lever trim plate and dust boot.

Remove shift lever assembly.

Raise vehicle
to
desired working height.

Disconnect
the
speedometer cable from speedometer

driven gear fitting.
.
~
. •

Remove propeller shaft, then support engine
at the

oil
pan
rail with
a
jack
or
other suitable support

capable
of
supporting
the
engine when transmission

is removed.

Disconnect shift lever bracket assembly from exten-

sion
and
remove
all 3
transmission shifter levers

from shifter shafts, (leave linkage connected
to

levers)
and
remove bracket assembly levers
and

linkage.

Remove extension mount7 to-crossmember attaching

bolts.

Loosen transmission crossmember
and
move rear-

ward
or
remove.

Remove
the
transmission-to-clutch housing retaining

bolts
and
install two guide pins, J-1126,
in
top holes.

Slide
the
transmission straight back until
the
input

shaft
is
free
of
splines
in the
clutch disc.

Slide
the
transmission rearward
to
allow sufficient

clearance
of
input shaft
and
clutch housing. Then tilt

input shaft
end of
transmission downward and with-
8.

9.

10.

11.
draw transmission from vehicle.

installation
to
Vehicle

1.
Raise transmission
and
rotate
as
necessary-to start

input shaft into clutch disc
and
slide transmission

forward until
it
bottoms against clutch housing.
Re-

move guide pins.

2.
Install
the
transmission-to-clutch housing retaining

bolts.
Torque
all
four retaining bolts
to 50 ft. lbs.

3.
Raise engine
and
position extension mount
to
cross-

member,
and
loosely install
the
retaining bolts.

Tighten crossmember
to
frame retaining bolts.

4.
Remove temporary support from engine, and torque

the extension mount retaining bolts.

5. Install propeller shaft.

6. Install control lever bracket assembly
to
transmis-

sion extension
and
connect shifter levers
to
shifter

shafts.

7. Fill transmission
to
level
of
filler plug hole with

correct lubricant specified
in
Section
0.

8. Lower vehicle and install shift lever assembly, check

shift pattern and adjust linkage
as
required.

9. Install trim plate and dust boot.

CORVETTE TRANSMISSION REPLACEMENT

Refer
to
similar procedure under 3-Speed Corvette

Transmission.

FOUR-SPEED (SAGINAW) TRANSMISSION

INDEX

Page

General Description
7-20

Maintenance
and
Adjustments
. . 7-21

Shift Linkage Adjustment.
. 7-21

Speedometer Driven Gear
and

Oil Seal ................
(See
Muncie 4-Speed)

Side Cover
7-22
Page

Removal
. . , 7-22

Disassembly
. . 7-22

Assembly
. . . 7-22

Installation
. 7-22

Extension
Oil
Seal
(See
Muncie 4-Speed)

Transmission Replacement (See Muncie 4-Speed)

GENERAL DESCRIPTION

The Saginaw four speed fully synchronized
(all
forward

gears) transmission incorporates helical drive gears

throughout.

The main drive gear
is
supported
by a
ball bearing
at

the front
end of the
transmission case and
is
piloted
at its

front
end in an oil
impregnated bushing mounted
in the

engine crankshaft.
The
front
end of the
mainshaft
is

piloted
in a row of
roller bearings
set
into
the
hollow
end

of
the
main drive gear
and the
rear end
is
carried
by a

ball bearing mounted
in the
front
of the
extension housing.

The countergear
is
carried
on a
single
row of
rollers

at both ends while thrust
is
taken on thrust washers
lo-

cated between
the
ends
of the
gear and
the
thrust bosses

in
the
case. Ah anti-rattle plate assembly
at the
front
of

the countergear provides
a
constant spring tension
be-

tween
the
counter
and
clutch gears
to
reduce torsional

vibrations.
The
sliding reverse idler gear
is
carried
on

a bushing finish bored
in
place.
It
rotates
on a
short

idler shaft retained by
a
woodruff
key.

The synchronizer assemblies consist
of a
clutch
hub,

clutch sleeve,
two
clutch
key
springs and three energizer

clutch keys
and are
retained
as an
assembly on
the
main

shaft
by a
snap ring.
A great deal
of
similarity
and
interchangeability
now

exists between
the new 3 and
4-speed Saginaw trans-

missions.

However,
the
synchronizer assembly
at the
front
of the

mainshaft
is
used
for the
third and fourth rather than
the

second
and
third shift.
The
synchronizer assembly
at

the rear
of the
mainshaft
is
used
for the
first and second

rather than
the
first
and
reverse shift. Gear teeth
cut

in
the
first and second synchronizer sleeve (reverse gear)

distinguish
it
from
the
third
and
fourth synchronizer

sleeve.

Starting from
the
front, gears
on the
mainshaft
are

third, second
and
first rather than second, first and
re-

verse.
A
fourth blocker ring
is
used between
the 1-2

synchronizer assembly
and
first gear
on the
four-speed

transmissions.

The cover
on the new
four-speed transmission
is lo-*

cated
on the
left-hand side
of the
case.
It is
similar
to

the three-speed cover with
the
addition
of a
reverse

shifter shaft assembly, detent ball
and
detent spring.

Disassembly
and
assembly procedures
are
covered
in

this section.

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-21

MAINTENANCE AND ADJUSTMENTS

SHIFT LINKAGE ADJUSTMENT

(CHEVROLET & CHEVELLE)

1.
Set Lever (L) (M) and (P) in neutral detent position.

2.
Move Lever Stud (A) to neutral detent position and

insert Locating Gauge (B) into Control Lever Bracket

Assembly.

3.
Install Reverse Rod (H) with retainer on Lever (T).

4.
Maintaining Lever (T) against Locating Gauge, Adjust

Clevis (R) at Lever (P) until Clevis Pin freely passes

through holes in Clevis (R) and Lever (P).

5.
Install Clevis Pin, Washer and Cotter Pin; tighten

Nut (S) against Clevis (R).

6. Install Rod (K) with retainer on Lever (C).

7.
Maintaining Lever (C) against Locating Gauge, adjust

Clevis (N) at Lever (M) until Clevis Pin freely

passes through holes in Clevis (N) and Lever (M).

8. Install Clevis Pin, Washer and Cotter Pin; tighten

Nut (O) against Clevis (N).

9. Install Rod (J) with retainer on Lever (L).

10.
With two Jam Nuts (G), (E) and Swivel (F) loose on

Rod (J) insert and attach Swivel (F) with retainer to

Lever (D).

11.
Maintaining Lever (D) against Locating Gauge (B)

while holding Swivel (F) run Jam Nut (G) against

Swivel (F) then tighten other Jam Nut (E) against

swivel.

12.
Remove Locating Gauge and check shifts to insure

proper operation, readjust if necessary.

SHIFT LINKAGE ADJUSTMENT (CHEVY II)

1.
Set Levers (H) (R) and (T) in neutral detent position.
2.
Move Lower Control Lever (A) to neutral detent po-

sition and insert Locating Gauge (B) into Control

Lever Bracket Assembly.

3.
Install Reverse Control Rod (G) with retainer on

Lever (X).

4.
Maintaining Lever (X) in neutral position with Locat-

ing Gauge (B), Adjust Clevis (V) at lever (T) until

Clevis Pin freely passes through hole in Clevis (V)

and Lever (T).

5.
Install Clevis Pin, Washer and Cotter Pin. Tighten

Jam Nut (W) to specified torque against Clevis.

6. Install Control Rod (F) with retainer on Lever (C).

7.
Maintaining Lever (C) in neutral position with Locat-

ing Gauge (B), Jam Nuts (M and S) and Swivel (N)

loose on Rod (F), attach to Lever (R) with retainer.

8. While holding Swivel (N) run Jam Nut (M) against

Swivel (N) and tighten Jam Nut (S) against Swivel (N).

9. Install Rod (E) with retainer on Lever (D).

10.
Maintaining Lever (D) in neutral position with Locat-

ing Gauge (B) and Jam Nut (J and L) and Swivel (K)

loose on Rod (E) attach to Lever (H) with retainer.

11.
While holding Swivel (K) run Jam Nut (J) against

Swivel (K) and tighten Jam Nut (L) against Swivel (K).

12.
Remove Locating Gauge (B) and shift to insure proper

operation. Readjust clevis and swivels if necessary.

SHIFT LINKAGE ADJUSTMENT

(CAMARO AND CORVETTE)

1.
Set Transmission Shift Levers in neutral position.

2.
Move Lever Arm (A) and Lever (C) (D) and (E) to

neutral position and insert Locating Gauge (B) into

Control Lever Bracket Assembly.

N

f E

Fig.
IX - Shift. Linkage (Chevrolet & Chevelle)

CHEVROLET CHASSIS SERVICE MANUAL

CLUTCH AND TRANSMISSIONS 7-22

Fig.
2X - Shift Linkage (Chevy II)

3.
Install Reverse Rod (J) with Retainer on Lever (N).

4.
With two Jam Nuts and Swivel loose on Rod (J) insert

and attach Swivel with Retainer to Lever (E).

5. Maintaining Lever (E) against Locating Gauge (B)

while holding Swivel run front Jam Nut against Swivel

then tighten rear Jam Nut against Swivel to specified

torque.

6. Install Rod (O) with Retainer on Lever (M)o

7. With two Jam Nuts and Swivel loose on Rod (O) insert

and attach Swivel with Retainer to Lever (C).

8. Repeat Step 5 Maintaining Lever (C) against Locating

Gauge (B).

9. Install Rod (K) with Retainer on Lever (L).

10.
With two Jam Nuts and Swivel retain to Lever (D).

11.
Repeat Step 5 maintaining Lever (D) against Locating

Gauge (B).

12.
Remove Locating Gauge and check shift to insure

proper operation. Readjust if necessary.

N

<

^ ii

K
3 A
1-2 DETENT

CAM
PIVOT PIN

DETENT

SPRING
3-4 DETENT

CAM

3-4

SHIFT FORK

1-2 SHIFTER

SHAFT ASSY.

REVERSE

SHIFTER SHAFT

ASSY.

3-4 SHIFTER

SHAFT ASSY.

DETENT SPRING

RETAINER

& BALL (UNDERNEATH) 1-2 SHIFTER R,NG

FORK

Fig.
3X - Comoro and Corvette Shift Linkage
Fig.
4X - Transmission Side Cover/ Shift Fork and Detent Assembly

TRANSMISSION SIDE COVER

Removal

1.
Disconnect control rods from levers.

2.
Shift transmission into neutral detent positions be-

fore removing cover.

3.
Remove cover assembly from transmission case

carefully and allow to drain.

Disassembly (Fig. 4X)

1.
Remove the outer shifter levers.

2.
Remove both shift forks from shifter shaft assem-

blies.
Remove all three shifter shaft assemblies

from cover. "O" ring seals around shifter shaft

may now be pryed out if required because of damage.

Remove reverse shifter shaft detent ball and spring,

3.
Remove detent cam spring and pivot retainer "C"

ring. Mark to identify for reassembly, then remove

both detent cams.

4.
Replace damaged parts.

CHEVROLET CHASSIS SERVICE MANUAL