CHEVROLET CAMARO 1967 1.G Chassis Workshop Manual

FUEL TANK AND EXHAUST SYSTEMS 8-25

4.
Cut the exhaust pipe near the muffler (see cau-

tion above) to allow sufficient pipe for muffler

replacement.

5.
^
Replace muffler and secure with new clamps.

NOTE:
Clamps must be assembled with nuts

attached toward the rear of the vehicle -

reference 90° to sawcuts in service muffler

pipe.

6. Reverse procedure for installation.

NOTE:
If bracket mounting insulators (tire

carcass mountings) are fatigued, replace to in-

sure a secure exhaust system.
7. In the event the tail pipe bezel has been damaged and

replacement is required, remove three screws and

replace the bezel. i

SIDE MOUNTED EXHAUST (Fig. 31)

Replacement

1.
Raise and support vehicle.

2.
Remove sill molding attaching screws and disengage

molding from the retainer.

3.
Remove cover retaining screws, cover and retainer

assembly.

4.
Remove exhaust pipe-to-manifold attaching nuts, and

rear bracket retaining nut, then detach exhaust pipe

from manifold studs and remove from vehicle.

Fig.
31—Side Mounted Exhaust System

CHEVROLET
CHASSIS SEKVK

FUEL TANK AND EXHAUST SYSTEMS
8-26

5. To install, assemble the bolt, washers, insulator, install pipe-to-manifold retaining nuts. Tighten all

cover bracket and retaining nut to the exhaust pipe retaining nuts.

rear bracket. . 7. Position molding retainer and cover to sill and in-

6. Insert rear bracket bolt in frame opening, position stall retaining screws.

exhaust pipe to the manifold attaching studs and 8. Position sill molding and install retaining screws.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-27

CAMARO

INDEX

Page

General Description 8-27

Service Operations

Fuel Tank 8-28

Fuel Lines 8-28

Metering Units (Gauge Sending Unit) 8-28

GENERAL DESCRIPTION

All models use an 18.5 gallon capacity (approx.) fuel

tank mounted between the frame rails behind the rear

axle (fig. 32). All fuel tanks are vented through an anti-

surge type filler cap assembly consisting of cap and
handle. The carrying straps hook through a double slot

in the front of the rear compartment reinforcements and

attach to strap bolts positioned in slots provided at the

rear panel reinforcements. A conventional fuel meter

VIEW B

Fig.
32—Fuel Tank Assembly

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-28

assembly is mounted on top of the tank and cannot be

removed for service without lowering the tank. The

upper filler neck assembly is routed through an opening

in the rear panel above the bumper and through the trunk

floor pan (fig. 33). The filler neck is not centered in the

rear panel but offset to the right to obtain the proper fill

rate.

The fuel pickup pipe is an integral part of the tank

meter unit^ located at the top front center of the tank. A

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

pickup pipe to prevent the entrance of foreign material

into the fuel system.

Fig.
33—Filler Neck Assembly

COMPONENT PART REPLACEMENT

FUEL TANK

Draining Tank

Refer to Chevrolet page 8-2.

Removal and Installation

1.
Drain fuel tank. .'...' .

2.
Raise vehicle.

3.
Disconnect fuel pickup line, gauge wire and ground

lead from tank unit.

4.
Loosen filler neck inlet hose clamp.

5. Remove tank support strap bolts and straps, then

lower tank carefully.

6. Reverse procedure to install.

FUEL TANK GAUGE SENDING UNIT (Fig. 34)

Replacement

1.
Remove fuel tank.

2.
Remove cam lock using special Tool J-8950.

3.
Remove meter unit and rubber gasket.

CAUTION: Carefully remove unit so as not to

damage screen on end of pipe.

4.
Clean screen by blowing out with compressed air.

5. Reverse removal procedure to install.
FUEL LINES (Fig. 35)

The gasoline lines extending from fuel tank to fuel

pump,
are routed on the underside of the underbody, on

the right side, opposite the single exhaust system. The

lines extend from the fuel tank 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 corn-

including carburetor, fuel

pump and
fuel lines and fuel tank if the

vehicle is to be stored for any
eciable

length of time. This precaution will prevent

accumulation 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" diameter

tubing for regular installation with beaded-type ends for

connections to hoses and flared ends for secure line

connections.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8*29

Fig.
34—Fuel Tank Meter Assembly

CHEVROUET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-30

Fig.
35—Fuel Line Routing

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK
AND
EXHAUST SYSTEMS
8-31

EXHAUST SYSTEMS

INDEX

Page

General Description
8-31

Component Part Replacement
8-31

Muffler Assembly
8-31

Exhaust Pipe
. 8-31

Tailpipe and/or Resonator
8-32

GENERAL DESCRIPTION

The single exhaust system
cm
six* cylinder engine

models
(fig. 36)
consists
of an
exhaust pipe, extension,

muffler
and
tailpipe with necessary attaching brackets

and clamps.
On V-8
engine models with single exhaust

assemblies
(fig. 36) an
exhaust crossover pipe
is
added

to connect
the
right exhaust manifold
to the
system.
The

dual exhaust system available
on V-8
engine models
(fig.

37) includes
two
front exhaust pipes -with
or
without

resonators,
two
rear exhaust pipes, dual inlet-outlet

muffler, tailpipes and attaching hardware.

The assemblies
are
secured
to the
engine
at the ex-

haust manifolds,
to the
rear compartment pan reinforce-

ment ahead
of
axle
and
adjacent
to the gas
tank
at the
end
of the
tailpipe.
The
assemblies
are
suspended
on

brackets with insulators
for
rattle free operation.

The muffler
is an
all-welded construction with
a

•
capacity
for
muffling
the
noise
and at the
same time,

minimizing back pressure
for
maximum engine effici-

ency.
The
internal parts
are
electric welded
to
eliminate

premature failure
or
rattle.

The exhaust system center mounting
at the
muffler

location consists
of an
underbody bracket,
an
insulator

and
a
clamp.
The
clamp holds
the
muffler and tailpipe

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 tailpipe

secures
the
pipe
to a
bracket assembly
and
insulator

attached
to an
existing underbody bracket.

COMPONENT PART REPLACEMENT

EXHAUST PIPE

Replacement

1.
Loosen
"U"
bolt clamp
at
rear exhaust pipe

connection.

2.
Remove exhaust pipe
to
manifold attaching nuts,
ex-

tension
and.
packing then separate pipe from manifold

studs.

NOTE:
Right exhaust crossover pipe
on V-8

engine single exhaust models
is an
integral part

of
the
exhaust pipe assembly and
is not
serviced

separately.

3.
Separate front exhaust pipe from rear exhaust pipe

extension.

4.
To
install exhaust pipe, connect pipe
to
rear exhaust

pipe extension
or
resonator
and
secure
to
exhaust

manifold. Note clearances
for
the standard and auto-

matic control linkages, underbody
and
crossmember.

5. Tighten exhaust pipe
to
manifold attaching nuts
and

rear "U" bolt clamp nuts.

EXHAUST PIPE EXTENSION

Replacement

1.
Remove "U" bolt clamps
at
muffler inlet and exhaust

pipe
or
resonator connections.

2.
Disconnect exhaust pipe extension
at
muffler
and

exhaust pipe
or
resonator connection.
3.
To
install extension, connect extension
to
exhaust

pipe
or
resonator and
to
muffler.

4.
Install
"V"
bolt clamps
and
tighten clamp nuts.

MUFFLER ASSEMBLY

Replacement

1.
Remove "U" bolt clamp
at
muffler inlet.

2.
Remove tailpipe support clamp.

3.
Separate muffler from rear exhaust pipe
and
remove

muffler from vehicle.

4.
If
usable,
cut
tail pipe from muffler.

5. Connect muffler inlet
to
exhaust pipe and install
"U"

bolt clamp
at
muffler inlet.

6. Connect tailpipe
to
muffler outlet
and
install rear

support clamp.

7. Install
"U"
bolt clamp
at
tailpipe
to
muffler outlet

connection and tighten nuts.

TAILPIPE

Replacement

1.
Remove
"U"
bolt clamp
at
muffler outlet.
If
replac-

ing right tail pipe, eut pipe
at
muffler outlet.

2.
Remove tail pipe rear hanger clamp and detach pipe

from muffler.

&IS SBtVKE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-32

EXHAUST PIPE EXTENSION

MUFFLER & TAIL PIPE ASSY.

Fig.
36—Single Exhaust System

3.
Position tail pipe at muffler, then install at hanger.

Do not secure attachments until clearances have been

checked. Check position of hanger so that inter-

plates are parallel.

4.
Tighten nuts at "U" bolt clamp then secure rear tail

pipe clamp.
RESONATOR

Replacement

1.
Cut exhaust pipe at resonator inlet.

2.
Loosen "U" bolt clamp nuts and separate resonator

from rear exhaust pipe extension.

3.
Assemble resonator to front and rear exhaust pipes!

4.
Install front and rear "U" bolt clamps and tighten

nuts.

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-33

MUFFLER &

TAIL PIPE ASSY.

Fig.
37—Dual Exhaust System

CHEVROLET CHASSIS SERVICE MANUAL

FUEL TANK AND EXHAUST SYSTEMS 8-34

SPECIAL
TOOLS

Fig.
38-Special Tools

1.
J-8950 Fuel Tank Gauge Unit Spanner '

2.
J-7777 Fuel Line Clip Installer

3. J-22554 Fuel Tank Gauge Unit Spanner (Chevrolet)

CHEVROLET CHASSIS SERVICE MANUAL