1967 CHEVROLET CAMARO fuel cap

ENGINE 6-26

6. Remove lifting device and lifting adapter then install

rocker arm covers as outlined.

7.
On synchromesh equipped vehicles, install clutch

cross-shaft engine bracket, then adjust and connect

clutch as outlined in Section 7.

8. Connect:

• Speedometer cable.

• Shift linkage at transmission.

• Transmission cooler lines (if so equipped).

9. Install propeller shaft.

10.
Remove jack stands and lower vehicle.

11.
Connect: \ '

Power steering pump lines (if so equipped).

Vacuum line to power brake unit (if so equipped).

Exhaust pipes at manifold flanges.

Accelerator linkage at pedal lever.

Fuel line at fuel pump.

Engine cooler lines (if so equipped).

Oil pressure gauge lines (if so equipped).

12.
Connect wires at:

Coil

Oil pressure switch

Temperature switch

Delcotron

Starter solenoid

13.
Install pulley, fan blade and fan belt as outlined in

Section 6K.

14.
Install radiator and shroud as outlined in Section 13.

15.
Install and adjust hood as outlined in Section 11.

16.
Connect battery cables.

17.
Fill with coolant, engine oil and transmission oil,

then start engine and check for leaks.

18.
Perform necessary adjustments and install air

cleaner.

INTAKE MANIFOLD

Removal

1.
Drain radiator and remove air cleaner.

2.
Disconnect:

Battery cables at battery.

Upper radiator and heater hose at manifold.

Accelerator linkage at pedal lever.

Fuel line at carburetor. ;

Wires at temperature sending switch and coil

(both sides).

Power brake hose at carburetor base.

Spark advance hose at distributor.

Crankcase ventilation hoses (as required).

3.
Remove distributor cap and mark rotor position with

chalk. Remove distributor clamp and distributor,

then position distributor cap rearward clear of

manifold.

4.
Remove coil.

5.
Remove manifold-to-head attaching bolts, then re^

move manifold, (with carburetor on) from engine and

discard gaskets and seals.

6. If manifold is to be replaced,,transfer:

Carburetor and carburetor mounting studs.

Temperature sending switch.

Water outlet and thermostat (use new gasket).

Heater hose adapter.

Choke coil.

Installation

1.
Clean gasket and seal surfaces of manifold, cylinder
heads and block.

2.
Install manifold end seals on block as shown (fig.

2V).

3.
Install side gaskets on cylinder heads using sealing

compound around water passages (fig. 2V).

4.
Install manifold bolts, and torque to specifications in

the sequence outlined on the Torque Sequence Chart.

5.
Install coil.

6. Install distributor with the rotor pointing at the chalk

mark, then install distributor cap.

NOTE:
If the crankshaft has been rotated while

the distributor was removed, time distributor to

number 1 cylinder as outlined in Section 6Y.

7.
Connect:

Battery cables at battery.

Upper radiator and heater hose at manifold.

Accelerator linkage at pedal lever.

Fuel line at carburetor.

Wires at temperature sending switch and coil

(both sides)!

Power brake hose at carburetor base.

Spark advance hose at distributor.

Crankcase ventilation hoses (as required).

Fill with coolant, start engine, check for leaks and

adjust timing and carburetor idle speed and mixture.

EXHAUST MANIFOLD

Removal

NOTE:
If equipped with "Air Injection Reactor

System", remove air manifold and tubes as out-

lined in Section 6T.

1.
Disconnect battery ground cable.
-

2.
Disconnect and remove Delcotron (as required).

3.
On 396 and 427 cu. in. engines, remove spark plugs

Fig. 2V - Intake Manifold Gasket and Seal Location

CHEVROLET CHASSIS SERVICE MANUAL

ENGINE FUEL 6M-7

5. On vehicles equipped with automatic transmission

hold throttle rod in full throttle position, pull TV

rod to full detent position and adjust TV rod to just

enter hole on throttle lever, then connect TV rod at

throttle lever.
NOTE:
If equipped with anti-stall device (dash-

pot),
set carburetor fast idle cam on high step

and adjust dash-pot to just contact throttle

lever.

327
CU.
IN.
427
CU.
IN.

Fig.
8C—Throttle Linkage-Corvette

AIR
CLEANERS

INDEX

Page

General Description 6M-7

Service Procedures . . 6M-8

Polyurethane. Element 6M-8

Maintenance 6M-8

Oil Bath 6M-8
Page

Maintenance
...........* 6M-8

Oil
Wetted
Paper
Element
6M-9

Replacement
* . 6M-9

Testing 6M-9

Tool J-7852 . 6M-9

GENERAL DESCRIPTION

Air cleaners on all models operate primarily to re-

move dust and dirt from the air that is taken into the

carburetor and engine. All air cleaners on engines

equipped with "Closed Positive" ventilation incorporate

flame arresters. Every 12,000 miles the flame ar-

resters should be removed, cleaned in solvent and blown

dry with compressed air.

An oil wetted polyurethane element air cleaner (fig. 1A)

is standard equipment on In Line engines. This type

cleaner element is reusable and should be removed,

cleaned, re-oiled and reinstalled every 12,000 miles or

more often during dusty or other adverse driving con-

ditions. The optional, oil bath air cleaner (available on
Chevrolets with L6 engine) should be cleaned and re-

filled with oil at oil change intervals.

On the V8 engines,, a replaceable, oil wetted paper

element type is used (fig; 2A). Both ends of me paper

element are bonded with plastisol sealing material.

The improved oil wetted paper elements have increased

filtering capacity over their dry paper predecessors.

Oil on the paper causes the element to become diBcolored

by a small amount of dirt but does not necessarily mean

the element is plugged or reduced in efficiency. Every

12,000 miles or more often during dusty or other adverse

driving conditions, either replace oil wetted paper ele-

ment or test element using ToolJ-7825.

CHEVROLET CHASSIS SOVICE/MANUAL

SECTION 8

FUEL TANK AND EXHAUST SYSTEMS

CONTENTS OF THIS SECTION

Page

Chevrolet .. . . 8-1

Fuel Tanks 8-1

Exhaust Systems 8-5

Chevelle 8-8

Fuel Tanks 8-8

Exhaust Systems 8-11

Chevy n ...... 8-13

Fuel Tanks 8-13
Page

Exhaust Systems 8-16

Corvette 8-18

Fuel Tanks 8-18

Exhaust Systems 8-24

Camaro 8-26

Fuel Tank 8-26

Exhaust System 8-30

Special Tools 8-33

CHEVROLET

FUEL TANKS

INDEX

Page

Page

General Description

Component Part Replacement

Fuel Tank
8-1 Fuel Lines 8-3

8-2 Fuel Tank Vent Lines 8-4

8-2 Metering Units (Gauge Sending Unit ) 8-4

GENERAL DESCRIPTION

All Sedan models (fig. 1) use a 24 gallon capacity

(approx.) fuel tank mounted between the frame rails

behind the rear axle. The fuel tanks are held in place

by two straps attached individually to the underbody at

each end. The strap? hinge at the forward end and secure

the tank at the rear with a nut and bolt. Anti-squeak

material is cemented to the tank at the strap locations.
A vent line from the forward-right side of tank extends

over a clip on the upper portion of wheelhouse.

The station wagon fuel tank has a 24 gallon capacity

(approx.). The tank is located at the back of the left rear

quarter wheelhouse area. The front of the tank is en-

closed with a protective shield (fig. 1).

VIEW A ^QUARTER PANEL

SEDAN

STATION WAGON
I

Fig.
1-Fuel
Tanks

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-4

Fig.
5— Meter Assembly Removal Using Tool J-22554

vehicle. The fuel lines should be occasionally inspected

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

the carburetor or fuel pumto and disassembly, the lines

should be disconnected
and
blown out. Check the fuel tank

strainer for damage or omission. Note position of fuel

line clips for convertible models.
FUEL TANK VENT LINE

Sedan modei fuel tanks are vented to the atmosphere

at the top right- forward edge of. the tank. The vent line

is connected by a rubber hose with two clamps one at the

tank and the other at the vent pipe which is secured to

the underbody A rubber grommet around the vent pipe

acts as a seal to prevent gasoline fumes from entering

the.passenger compartment.

IMPORTANT: It is important to note that the

sedan gas tank cap is non-vented. It is neces-

sary to be assured that the vent line is free from

dirt, etc., and open at all times. If gasoline

fumes are detected, the rubber grommet should

be checked.

Station wagon models use a vented, anti-surge type gas

tank.

GAUGE UNIT AND FUEL STRAINER

Removal and Installation (Fig. 4)

1.
Follow tank removal procedure.

2.
Use Special Tool J-22554 (fig. 5) to remove cam

lock on sedan models and Tool J-8950 on station

wagons.

3.
Remove unit and rubber gasket.

4.
Reverse procedure to install.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS
8-8

CHEVELLE

FUEL TANKS

INDEX

Page

General Description.
g.g

Component Part Replacement
8-8

Fuel Tanks
. 8-8

Fuel Lines
8-8
Metering Units (Gauge, Sending Unit)

Fuel Tank Filler Neck Caps.
. .

Fuel Tank Vent Lines
Page

8-8

8-8

8-9

GENERAL DESCRIPTION

All models
use a 20
gallon capacity (approx.) fuel tank

mounted between
the
frame rails behind
the
rear axle.

The fuel tanks
are
basically
the
same
for
sedan, 2-seat

station wagon
and
pickup models except
for
filler neck

location
and
venting
(fig. 8).

All fuel tanks
are
vented
to the
atmosphere. Sedan

model tanks have
an
external vent hose and pipe assem-

bly
(fig. 11) and use a
non-vented fuel cap. Station wagon

and pickup model tanks
are
vented through
a
hose
and

vent pipe assembly
to the
filler neck
(fig. 8)
and
use a

vented, anti-surge type
gas cap. The
fuel caps
are two

different designs conforming
to SAE
standards
and are

not interchangeable.

The filler neck assembly
on
sedan models
is a
rear

fill design located behind
the
center
bar of the
bumper.
Station wagon
and
sedan pickup model filler neck assem-

blies
are
located
in
the left rear quarter panel.

The fuel pickup pipe
is
built integrally with
the
tank

gauge, located
at the
top-front center
of
the tank.
A
fine

mesh screen
is
located
at
the bottom-end
of the
fuel pick-

up pipe
to
prevent
the
entrance
of
foreign material into

the fuel system.

The sedan fuel tanks
are
held
in
place
by
two metal

straps attached individually
to the
underbody
at
each
end.

The straps hinge
at the
forward end and secure
the
tank

at
the
rear with
an
adjustable bolt
and nut
assembly.

The station wagon
and
pickup models have
a
frame

mounted fuel tank secured with straps
to
front and rear

supports.

COMPONENT PART REPLACEMENT

FUEL TANK

Draining Tank

The absence
of a
drain plug
in the gas
tanks makes
it

necessary
to
siphon fuel from
the
tank when draining
is

needed. Refer
to the
recommended draining procedures

previously outlined under Chevrolet Models
in
this

section.

Removal
and
Installation (Sedan Models)

1.
Raise vehicle.

2.
Drain fuel tank.

3.
Disconnect fuel pickup line
and
gauge wires from

tank unit.

4.
Disconnect vent hose from tank.

5. Remove tank support straps and lower tank carefully.

6.
To
install, reverse
the
removal procedure.

Removal
and
Installation

(Station Wagon
and
Pickup)

1.
Follow Steps
1
thru
3
outlined under sedan models.

2.
Remove tank support straps.

3.
Remove frame screw attachments from
the
front

support
(fig. 8).

4.
Guide tank forward
and
remove.

5.
To
install, reverse removal procedure.

FUEL LINES

The fuel lines, extending from fuel tank toiiuelpump,

are routed
on the
underside
of the
underbody along
the

right side
of the
vehicle opposite
the
single exhaust
sys-

tem.
The
fuel lines should occasionally
be
inspected
for
leaks,
kinks,
or
dents.
If
evidence
of
dirt
is
found
in the

carburetor
or
fuel pump
on
disassembly,
the
lines should

be disconnected
and
blown
out.
Check
the
fuel tank

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

diameter tubing with beaded type ends
for
connections
of

hoses.

FUEL PIPE RETAINER
CUP

Removal
and
Installation

If fuel pipes
and
retainer clips
are
removed, Tool

J-7777 should
be
used
to
install
new
retainer clips
(fig.

10).
After removal
of the old
clip from
the
frame, position

the
new
clip
in the
location
of the old
clip. Index
the

"blind rivet"
and
press hard (hand pressure should
do)

to expand rivet.

GAUGE UNIT
AND
FUEL STRAINER

Removal
and
Installation
(Fig. 11)

1.
Drain tank
to a
level below
the
unit.

2.
Disconnect fuel pickup line
and
gauge unit wire.

3.
Use
special Tool J-8950
to
remove
cam
lock.
Re-

move unit
and
rubber gasket.

CAUTION: Carefully remove unit
so as not to

damage screen
on the end of
the pipe.

4.
Clean screen
by
blowing
out
with compressed
air.

5. Reverse procedure
to
install.

FUEL TANK FILLER NECK CAPS

The fuel tank filler neck caps
are
non-vented with
an

anti-surge feature. Station wagons have vented caps.

(Refer
to
"Fuel Tank Vent Lines").

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-9

SEDAN
STATION WAGON AND PICKUP

Fig.
8—Fuel Tanks

FUEL TANK VENT LINE

Sedan model fuel tanks are vented to the atmosphere

at the top right forward edge of the tank. The vent line

is connected by a rubber hose with two clamps one at the

tank and the other at the vent pipe which is secured to the

underbody as shown in Figure 8. A rubber grommet

around the vent pipe acts as a seal to prevent gasoline

fumes from entering the passenger compartment.

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. If gasoline fumes are

detected, the rubber grommet should be checked.

Station wagon and pickup model tanks are vented from

the tank to the filler neck (fig. 9) and use a vented cap.

The vent outlet pipe on the tank is connected to the vent

inlet pipe on the filler neck by a rubber hose. The hose

is secured with two wire clamps.

Fig.
9—Filler Neck and Vent Assemblies
Fig.
10—Installing Fuel Line Retainer Clip

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
8-13

CHEVY II

FUEL TANKS

INDEX

Page

Page

General Description.
8-13

Component Part Replacement
8-13

Fuel Tanks
8-13

Fuel Lines
8-14
Metering Units (Gauge Sending Unit)
8-13

Fuel Tank Filler- Neck Caps.
. . 8-14

Fuel Tank Vent Lines .......
8-14

GENERAL DESCRIPTION

ANTI-SQUEAK

MA'
ANTI-SQUEAK

MATERIAL

SEDANS

STATION WAGON

Fig.
15-Chevy
II
Fuel Tanks

All Chevy
II
Models have
16
gallon capacity (approx.)

fuel tanks mounted between
the
frame rails
to the
rear
of

the rear axle
(fig. 15). The
fuel tanks
are
basically
the

same
for the
passenger
car
and two-seat,
six
passenger

station wagon models. The tanks
are
held
in
place
by two

metal straps attached individually
to the
underbody
at

each
end. The
straps hinge
at the
forward
end
and secure

the tank
at the
rear with
an
adjustable bolt and nut
ad-

sembly. The tank rests against the rear compartment
pan

reinforcement.
The
two-seat station wagon
gas
tank
is

secured
to the
contour
of
forward
and
rear underbody
brackets.
The
filler neck
is
accessible
by
removal
of a

fender
gas cap at the
rear left fender location.

A fine mesh screen
is
located
at the end of the
fuel

pickup pipe
to
prevent
the
entrance
of
dirt into
the sys-

tem.
The
tank
can be
drained
by
siphoning
at the
filler

neck
or by
removing
the
gauge sending unit and siphon-

ing
at the
tank opening.

CAUTION: Care should
be
exercised
to
avoid

denting
or
puncturing
the
fuel tank when
in-

stalling
or
removing.
~

COMPONENT PART REPLACEMENT

FUEL TANKS

Draining Tank

The absence
of a
drain plug
in
the Chevy
n
Model
gas

tanks makes
it
necessary
to
siphon fuel from
the
tank

when draining
is
needed. Refer
to the
recommended

draining procedures previously outlined under Chevrolet

Models
in
this section.

Removal
and
Installation

1.
Drain fuel tank.

2.
Raise
and
support vehicle.

3.
Disconnect
the
filler neck inlet hose
and the
vent

connection
(fig. 15).

4.
Remove
the gas
tank sending gauge unit access hole

cover
on
station wagons.
5. Disconnect fuel tank gauge sending unit with special

spanner Tool J-8950, detach wire
and
fuel pickup

line
at the gas
tank.

6. Remove tank support straps and lower tank carefully.

7. Reverse procedure
to
install.

The sending units
are
located on
the top
forward
end of

the
gas
tanks.
The
fuel strainer
is
located
at the end of

these sending units.

FUEL TANK GAUGE SENDING UNIT

AND FUEL STRAINER
(Fig. 16)

Replacement

1.
Drain tank
to a
level below
the
unit.

2.
Disconnect fuel pickup line
and
gauge unit wire.

3.
Use
special Tool J-8950
to
remove
cam
lock.
Re-

move unit and rubber gasket.

CHEVROLET CHASSIS SERVICE MANUAL