1967 CHEVROLET CAMARO engine

CLUTCH AND TRANSMISSIONS 7-41

CAUTION: Use converter holding ToolJ-5384

when lowering transmission or keep rear of

transmission lower than front so as not to lose
converter.

The installation of the transmission is the reverse of

the removal.

TURBO HYDRA-MATIC DIAGNOSIS PROCEDURE

Accurate diagnosis of transmission problems begins

with a thorough understanding of normal transmission

operation. In particular, knowing which units are in-

volved in the various speeds or shifts so that the specific

units or circuits involved in the problem can be isolated

and investigated further. Analytical diagnosis will pro-

tect the technician from come backs and certainly will

improve owner satisfaction.

An important and often overlooked aspect of diagnosis

is finding out specifically what the customer is com-

plaining of. For this purpose a short ride with the cus-

tomer will often prove beneficial. It may be found that

the condition the customer wants corrected is standard

and should not be altered.

The following sequence, based on field experience, pro-

vides the desired information quickly and in most cases

actually corrects the malfunction without requiring the

removal of the transmission. Details of the items listed

in this sequence are covered further in the text.

SEQUENCE FOR TURBO HYDRA-MATIC

DIAGNOSIS PROCEDURE

1.
Check oil level and condition.

2.
Check and correct detent switch.

3.
Check and correct vacuum line and fittings.

4.
Check and correct manual linkage.

OIL LEVEL AND CONDITION CHECK

Always check the oil level before road testing. Oil

must be visible on dip stick prior to operating the ve-

hicle. Erratic shifting, pump noise, or other malfunc-

tions can in some cases be traced to improper oil level.

Oil level should be checked with the selector lever in

the Park (P) position, engine running, and the vehicle on

level pavement.

Fluid level should be to the FULL mark with the trans-

mission at normal operating temperature (170°-190°
F.).

With warm fluid (room temperature), the level should be

at or slightly below the ADD mark.

If oil level was low, refer to Oil Leaks.

The condition of the oil is often an indication of whether

the transmission should be removed from the vehicle, or

to make further tests. When checking oil level, a burned

smell and discoloration indicate burned clutches or bands

and the transmission will have to be removed.

MANUAL LINKAGE

Manual linkage adjustment and the associated neutral

safety switch are important from a safety standpoint

The neutral safety switch should be adjusted so that the

engine will start in the Park and Neutral positions only.

With the selector lever in the Park position, the park-

ing pawl should freely engage and prevent the vehicle

from rolling. The pointer on the indicator quadrant

should line up properly with the range indicators in all

ranges.
OIL LEAKS

Before attempting to correct an oil leak, the actual

source of the leak must be determined. In many cases,

the source of the leak can be deceiving due to "wind flow"

around the engine and transmission.

The suspected area should be wiped clean of all oil be-

fore inspecting for the source of the leak. Red dye is

used in the transmission oil at the assembly plant and

will indicate if the oil leak is from the transmission.

. The use of a "black light"* to identify the oil at the

source of leak is also helpful. Comparing the oil from

the leak to that on the engine or transmission dip stick

(when viewed by black light) will determine the source

of the leak.

Oil leaks around the engine and transmission are gen-

erally carried toward the rear of the car by the air

stream. For example, a transmission "oil filler tube to

case leak" will sometimes appear as a leak at the rear of

the transmission. In determining the source of an oil

leak it is most helpful to keep the engine running.

POSSIBLE POINTS OF OIL LEAKS

• 1. TRANSMISSION OIL PAN LEAK

a. Attaching bolts not correctly torqued.

b.
Improperly installed or damaged pan gasket.

c. Oil pan gasket mounting face not flat.

2.
REAR EXTENSION LEAK

a. Attaching bolts not correctly torqued.

b.
Rear seal assembly — damaged or improperly

installed.

c. Gasket seal — (extension to case) damaged or

improperly installed.

d. Porous casting.

3.
CASE LEAK

a. Filler pipe "O" ring seal damaged or missing;

misposition of filler pipe bracket to engine —

"loading" one side of
"O"
ring.

b.
Modulator assembly "O" ring seal
—
damaged or

improperly installed.

c. Governor cover, gasket and bolts — damaged,

loose; case face leak.

d. Speedo gear
—
"O" ring damaged.

e. Manual shaft seal — damaged, improperly in-

stalled.

f. line pressure tap plug — stripped, shy sealer

compound.

g. Parking pawl shaft cup plug
—
damaged, improp-

erly installed.

h. Vent pipe (refer to Item 5).

i. Porous case.

4.
FRONT END LEAK

a. Front seal - damaged (check converter neck for

nicks,
etc., also for pump bushing moved for-

ward);
garter spring missing from pump to con-

verter seaL

b.
Pump attaching bolts and seals
—
damaged, miss-

ing, bolts loose.

CHEVROLET a
SERVICE

CLUTCH AND TRANSMISSIONS 7-42

c. Converter
—•
leak in weld.

d. Pump tfO" ring seal — damaged. (Also check

pump groove and case bore.)

e. Porous casting (pump or case).

5. OIL COMES OUT VENT PIPE

a. Transmission over-filled.

b.
Water in oil.

c. Pump to case gasket mispositioned.

d. Foreign material between pump and case, or be-

tween pump cover and body.

e. Case — porous, pump face improperly machined.

f. Pump — shy of stock on mounting faces, porous

casting.

CASE POROSITY-REPAIR

Transmission leaks caused by aluminum case porosity

have been successfully repaired with the transmission in

the vehicle by using the following procedure.

1.
Road test and bring the transmission to operating

temperature.

2.
Raise the car and, with the engine running, locate the

source of the oil leak. Check for leaks in all operat-

ing positions.

NOTE:
The use of a mirror will be helpful in

finding leaks.

3.
Shut off engine and thoroughly clean area with a sol-

vent and air dry.

4.
Using the instruction of the manufacturer, mix a suf-

ficient amount of epoxy cement, part #1360016, to

make the repair.

5. While the transmission is still hot, apply the epoxy

to the area, making certain that the area is fully

covered.
6. Allow epoxy cement to dry for three hours and re-

test for leaks, as outlined in Steps 1 and 2.

OIL PRESSURE CHECK

With Car Stationary

Transmission oil pressure gauge and engine tachome-

ter should be connected and the oil pressures should

check as follows:

1.
Pressures indicated below are at 0 output speed with

the vacuum modulator tube disconnected and with en-

gine at 1200 rpm.

Approximate

Altitude of Check

(Ft. above sea level)

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000
Drive

Neutral

Park

150

150

145

138

132

126

121

116
LI

or

L2

150

150

150

150'

150

150

150

150
Reverse

244

233

222

212

203

194

186

178

2.
Pressures indicated below are with the vacuum tube

connected for normal modulator operation, and with

the engine at 1200 rpm.

NOTE:
Pressures are not significantly affected

by altitude or barometric pressure when the

vacuum tube is connected.

Drive, Neutral, Park Ll or L2 Reverse

70 150 107

TURBO HYDRA-MATIC SHIFT POINTS

Engine

Throttle

Position

Closed

Detent

Touch

Thru

Detent
V327 (L30)

2.73 Axle - 8.25 - 14 Tire

•1-2 Up

7.7-11.5

36.4-50.1
2-1 Dn

10.9-6.9

74.8-91.4
2-3 Up

17.5-22.6

85.1-67.6
3-2 Dn

19.5-14.6

43.3-26.6
Chevrolet Models
(MPH)

V396 (L35)

2.73 Axle - 8.25 - 14 Tire

1-2 Up

8.0-12.9

38.4-55.9
2-1 Dn

10.3-4.3

45.6-25.2
2-3 Up

17.2-27.8

/

74.8-91.7
3-2 Dn

18.3-12.6

83.7-65.0
V427 (L36)

2.73 Axle - 8.25 - 14 Tire

1-2 Up

8.6-12,6

44.1-58.5
2-1 Dn

1-1.7-6.6

45.8-27.2
2-3 Up

17.5-30.7

81.1-99.4
3-2 Dn

18.9-14.3

92.6-73.4

Chevelle Models (MPH)

Throttle

Position

Closed

Detent

Touch

Thru

Detent
V396(L34)

3.07 Axle - F70 - 14 Tire

1-2 Up

7.4-10.9

38.1-50.4
2-1 Dn

9.6-5.7

39.5-23.5
2-3 Up

15.1-26.4

69.9-85.7
3-2 Dn

16.3-12.4

79.8-63.3

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-3

CAUTION: Always drain gasoline from com-

plete fuel system including carburetor, fuel

pump and all fuel lines and fuel tank if the vehi-

cle is to be stored for any appreciable length of

time. This precaution will prevent accumulation

of gum formation and resultant poor engine

performance.

Removal and Installation (Except Station Wagon)

1.
Drain fuel tank.

2.
Raise vehicle.

3.
Disconnect fuel pickup line, ground wire.

4.
Disconnect meter wire at rear harness connector.

5. Disconnect vent pipe hose.

6. Remove tank support straps and lower tank carefully.

7. To install, reverse the removal procedure.
Removal and Installation (Station Wagon)

1.
Drain fuel tank.

2.
Raise vehicle.

3.
Remove gas tank shield at the back of the left rear

wheel; remove all screws including the screw

attachment at the bottom of the quarter panel.

4.
Disconnect fuel pickup line and gauge wires from

tank unit.

5. Remove ground wire attaching bolt at body location.

6. Remove strap assembly nut and carefully lower tank.

7. Reverse removal procedure to install.

FUEL LINES (Fig. 3)

The fuel lines extend from the fuel tank pickup to fuel

pump are routed on the underside of the right side of the

CAM

METER ASSY

GASKET

METER ASSY

ALL EXCEPT WAGONS

Fig.
4—Gauge Unit Assembly

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK
AND
EXHAUST SYSTEMS
8-5

EXHAUST SYSTEMS

INDEX

Page

General Description
. . 8-5

Component Part Replacement
8-5

Muffler Assembly.
8-5

Exhaust Pipes.
8-5

Tail Pipes.
8-5

GENERAL DESCRIPTION

All exhaust systems used
on the 1967
Chevrolet
are
exhaust systems
(fig. 7) are
available
as
regular produc-

the split system type
in
which the. component parts
are
tion equipment
on the 427 cu. in.
displacement
V-8 en-

secured together with clamps.
The
single exhaust system gines
and as an
option
on the
other (except
283 cu. in.)

used
on L-6
engine models
(fig. 6)
consists
of an
exhaust
V-8
engines. These systems consist
of two
exhaust

pipe, muffler, tailpipe
and
attaching hardware.
On V-8
pipes, mufflers, tailpipes with resonators
and
attaching

engine single exhaust models
a
crossover pipe
is
added hardware.
All
exhaust systems
are
suspended on brackets

to connect
the
right exhaust manifold
to the
system. Dual with insulators
for
rattle free operation.

COMPONENT PART REPLACEMENT

Care should
be
taken
to
have
the
exhaust pipe, muffler

or tail pipe
in
proper relation with each other. Incorrect

alignment frequently causes annoying rattles
due to in-

correct clearances.

MUFFLER ASSEMBLY

Remove
and
Replace

1.
Remove "U" bolt clamp
at
center mounting.

2.
Remove
"U"
bolt clamp
at
forward
end of
muffler

pipe.

3.
Disengage muffler
at
exhaust
and
tail pipe

connections.

4.
Three-fourths inch clearance should
be
allowed
be-

tween
the
muffler bracket (hanger)
and
crossmember

at installation.

5. Install unit with
the
flat side
of the
muffler showing.

EXHAUST PIPE (CROSSOVER WITH
V-8
ENGINE)

Remove
and
Replace

1.
Remove
two
nuts, extension
and
packings-separate

pipe from manifold.
2.

3.
Disassemble

pipe.
"U"
damp from muffler
and
remove

Attach pipe
to
muffler, then secure
to
manifold. Note

clearances
for the
standard
and
automatic control

linkages, underbody
and
crossmember. Contact
of

exhaust pipe
to
engine panrail
is
permissible.

4.
Tighten nuts uniformly.

TAIL PIPE AND/OR RESONATOR

Remove
and
Replace

1.
Remove
"U"
clamp attachment
at
muffler.

2.
Remove screw attachment
at
tail pipe rear hanger

assembly.

3.
Remove tail pipe.

4.
Replace tail pipe
at
muffler, then install
at
hanger

Do
not
secure attachments until clearances have been

checked. Check position
of
hanger
so
that interplates

are parallel.

5. Torque nuts
7-9 ft. lbs. at
hanger
and 10-15 ft. lbs.

at muffler.

CHEVROLET CHASSIS
SEI

FUEL TANK AND EXHAUST SYSTEMS 8-6

1"-1STGEAR

STD.
TRANS.

CONTACT OF EXHAUST

PIPE TO ENGINE PAN

RAIL IS PERMISSIBLE
VIEW E

Fig.
6—Single Exhaust Systems

CHEVROLET
CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-11

EXHAUST SYSTEMS

INDEX

Page

General Description 8-11

Component Part Replacement 8-12

Muffler Assembly 8-12

Exhaust Pipes. 8-12

Tail Pipes 8-12

GENERAL DESCRIPTION

V-8

VIEW C
VIEW D

(EXCEPT WAGON)

L-6
VIEW A

Fig.
13—Single Exhaust System

The single exhaust system used on all six cylinder

engine models consists of an exhaust pipe, muffler and

tail pipe (fig. 13), An exhaust crossover pipe is added on

V-8 engine single exhaust models to connect the exhaust

manifolds to the system. A dual exhaust system, availa-

ble on V-8 engine models includes two exhaust pipes,

mufflers, and tail pipes and attaching hardware (fig. 14).

All systems are suspended on brackets with insulators

for rattle free operation.

The mufflers are a seam rolled construction with spot

welded baffles, with a capacity for muffling the exhaust

and at the same time, minimizing back pressure for
maximum engine efficiency. The internal parts of the

muffler are spot welded in position while external parts

are electric arc-welded to eliminate a chance of pre-

mature failure or rattle.

The exhaust system center mounting at the muffler lo-

cation (fig. 13) consists of an underbody bracket, an insu-

lator and a clamp. The clamp holds the muffler and tail

pipe with a "U" bolt and at the same time secures the

muffler and pipe to the body.

The exhaust system mounting at the end of the tail pipe

secures the pipe to a bracket assembly and insulator at-

tached to an existing underbody bracket (fig. 13).

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-14

CAUTION: Carefully remove unit so as not to

damage screen oh the end of the pipe,

4.
Clean screen by blowing out with compressed air.

5. Reverse procedure to install.

FUEL LINES (Fig. 17)

The gasoline lines are routed on the underside of the

underbody prop shaft tunnel off center, on the right side,

opposite the single exhaust system. The lines extend

from the fuel tank, joint the brake lines on dual clip

assemblies, and then to the right side of the engine

to the fuel pump and over the front of the engine to the

carburetor.

Maintenance

CAUTION:

plete fuel
Always drain gasoline from com-

system including carburetor, fuel

pump and all fuel lines and fuel tank if the

vehicle is to be stored for any appreciable

length of time. This precaution will prevent ac-

cumulation of gum formation and resultant poor

engine performance.

The fuel lines should occasionally be inspected for

leaks,
kinks, or dents. If evidence of dirt is found in the

carburetor or fuel pump disassembly, the lines should be

disconnected and blown out. Check the fuel tank strainer

for damage or omission. Fuel lines are of 5/16" di-

ameter tubing for regular installation with beaded-type

ends for connections to hoses and flared ends for secure

line connections.

FUEL TANK VENT LINE (Fig. 18)

The
gas
tanks
are
vented from
the
filler neck near
the

filler neck opening with
3/16"
tubing which extends

underneath
the
vehicle
to the
front
of the gas
tank.

IMPORTANT:
It is
important
to
note that
the

gas tank
is not
vented
at the cap;
therefore,
it

is necessary
to be
assured that
the
vent line
is

free from dirt,
etc., and
that
the gas
tank vent

line
is
open
at all
times.

At
the
filler neck
the
vent line
is
wedged into
an
open-

ing
and
secured
by a
snap-on clamp.
The
vent line
is

connected
by a
rubber hose with
two
wire clamps
at the

gas tank location
and
routed
to the gas
tank hinge strap

access hole where
the
tubing
end is
protected
by a
rubber

grommet
and a
screw
and
shield secured
in the
hole
at

the strap
end.
FWD.

SEDANS

6-PASS.

STATION WAGON

Fig. 16—Fuel Tank Gauge Sending Units and Strainers

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-16

EXHAUST SYSTEMS

INDEX

Page

General Description 8-16 Exhaust Pipes.

Component Part Replacement . 8-17 Tail Pipes. . .

Muffler Assembly 8-17
Page

8-17

8-17

GENERAL DESCRIPTION

Fig.
19-Cheyy If—Single Exhaust Systems

The single exhaust system on Chevy II models for six

cylinder engines (fig. 19) consists of an exhaust pipe,

muffler and tail pipe. On V-8 engines with single exhaust

assemblies (fig. 19) an exhaust crossover pipe is added

to connect the right exhaust manifold to the system. A

dual exhaust system (fig. 20), available on the V-8 engine

(except station wagons) includes two exhaust pipes,

mufflers, tail pipes with resonators and attaching

hardware.

The assemblies are secured to the engine at the ex-

haust manifolds, to the center mounting at the muffler
location and adjacent to the gas tank at the end of the

tail pipe. The assemblies are suspended on brackets with

insulators for rattle free operation.

The muffler is an all-welded construction with a ca-

pacity for muffling the noise and at the same time,

minimizing back pressure for maximum engine ef-

ficiency. The internal parts of the muffler are spot

welded in position while external parts are electric are

welded to eliminate a chance of premature failure or

rattle.

The exhaust system center mounting at the muffler lo-

cation consists of an underbody bracket, an insulator and

CHEVROLET CHASSIS SERVICE MANUAL