1967 CHEVROLET CAMARO height

ACCESSORIES 15-12

VACUUM

(WIT

P

VACUUM Llh

, AIR SUPPt

LINES

t

SUPERLIFT F

SHOCK ABSO
OPERATED AIR COMPRESSOR

H STORAGE TANK AND

RESSURE REGULATORJV

\A

4E FROM ENG«NE^"^
/ \-HEIGHT CONTROL

•^-Z n VALVE (WITH TIME

^* DELAY MECHANISM)

EAR II

RBERS

Fig.
12 - Automatic Level Control Schematic

sure,
alternatley to opposite sides of the compressor

diaphragm.

As the compressor cycles, the reservoir air pressure

gradually increases causing a back pressure on the sec-

ond stage piston until it equals the push of pressure

against the diaphragm- At this point, a balanced condi-

tion is reached and the unit stops operating. After res-

ervoir pressure drops due to system air usage, the com-

pressor again begins to cycle and replenish the

reservoir.

Pressure balance will depend upon the prevailing mani-

fold vacuum and atmospheric pressure. Both are af-

fected by altitude above or below sea level. Balance

pressure will vary from approximately 150 to 275 psi.

NOTE: After completion of work on this sys-

tem or when servicing other parts of the car and

the system is deflated, inflate the reservoir to

140 psi or maximum pressure available through

the compressor service valve.

The PRESSURE REGULATOR VALVE is preset and

limits the reservoir outlet pressure to approximately 125

psi to avoid damage to the height control valve and Super-

lift shocks.

The HEIGHT CONTROL VALVE, which is mounted on

the frame, senses rear car height through a link attached

to the right rear upper control arm. When load is added

to the car, the overtravel lever is forced up causing an

internal lever to open the intake valve, when this valve

is open high pressure air is admitted to the Superlift

shocks. As the car raises to level, the intake valve shuts

off.

When load is removed from the car, the overtravel

lever is forced down causing the internal arm to open the

exhaust valve. As the car lowers to the level position,

the exhaust valve shuts off.

A four to eighteen second time delay mechanism, which

is built into the height control valve, prevents air trans-

fer due to normal ride movements. The overtravel

lever, which pivots around the control valve shaft, rides

off the flat side of the control valve shaft and does not

have time to. react to the rapid changes or normal ride

motions.
During changes due to loading, the time delay mecha-

nism will allow the overtravel shaft to open either the in-

take or exhaust' valve as required, since this is not a

rapid movement.

The SUPERLIFT shock absorber is essentially a con-

ventional hydraulic unit with a. pliable nylon reinforced

neoprene boot acting as an air chamber.

The unit will extend when inflated and retract when de-

flated by the control valve.

An eight to fifteen psi air pressure is maintained in the

Superlift at all times to minimize boot friction- This is

accomplished by a check valve in the exhaust fitting on

the control valve. Neither shock absorber function nor

conventional ride motions thru rear coil springs is im-

paired in the event of accidental air pressure loss. .

A combination of steel tubing and reinforced rubber

hose is used for air lines throughout the system.

-SUPERLIFT

PORT

STATION WAGON

& SEDAN

INTAKE

PORT
HAUST

PORT

Fig. 13 - Height Control Valve

AIR CHAMBER
BOOT

AIR DOME AIR PISTON

Fig. 14- Superlift Absorber

CHEVROLET CHASSIS SERVICE MANUAL

ACCESSORIES 15-14

Deflate system through service valve and disconnect

line at pressure regulator valve. Install test gauge on

regulator valve high pressure fitting.

Inflate system through service valve to maximum

available pressure.

NOTE: If available pressure is less than 140

psi,
start engine to build-up reservoir to this

pressure.

Regulated pressure should build-up to and hold

steady at 100-130 psi on test gauge.

Check regulated pressure by momentarily (not more

than one second) depressing valve core on test gauge

arid observe gauge reading.

If regulated pressure now reads less than 100 psi,

replace regulator assembly.

If regulated pressure exceeds 130 psi, replace regu-

lator assembly.

Control Valve Test

Exhaust (Superlifts Inflated)

1.
Disconnect control valve lever from link.

2.
Hold lever down in exhaust position until Superlifts

deflate or for a minimum of 18 seconds.

3.
If Superlifts deflate, perform Intake Check.

4.
If Superlifts do not deflate, remove exhaust adapter

from control valve and hold lever down as in Step 2.

Replace adapter, O-ring and filter if this deflates

Superlifts.

5.
Replace control valve if none of the above steps solve

problem.

Intake (Reservoir Pressure 125 psi Minimum)

1.
Disconnect overtravel lever from link.

2.
Hold lever up in intake position until Superlifts in-

Fig.
16 - Assembly Leak Test Preparation
flate or for a minimum of fifteen seconds.

3.
If Superlifts inflate and hold, proceed to Time Delay

Check. '•

4.
If Superlifts inflate and then leak down, perform leak

test on lines and fittings and then on Superlifts and

control valve. Repair or replace as indicated.

Time Delay Test (Reservoir Pressure 125 psi Minimum)

1.
Record rear trim height of empty car (rear bumper

to ground).

2.
Add weight equivalent to two passenger load to rear

of car. Car should begin to level in 4-18 seconds.

3.
Remove weight. After 4-18 seconds car should begin

to settle.

4.
Replace valve if time delay is not within the 4-18

seconds.

Trim Adjustment—On Car

Trim adjustment should be performed with a full fuel

tank (or the equivalent in load at the rate of 6 lbs
./gal-

lon)
,
but no other load.

Abbreviated Adjustment

1.
Fill the compressor at the service valve with the

available air line pressure.

2.
Disconnect link from height control valve lever.

Move the height control valve lever upward until air

fills the Superlifts.

3.
Move lever downward and hold until air stops escap-

ing from the exhaust port of the height control valve.

The Superlifts will now automatically hold 8 to 15

PSI.
;

4.
Let lever go to its neutral position> and loosen the

lever adjustment nut.

5.
Assemble the link to the height control valve lever

and tighten the lever adjustment nut.

NOTE: Do not move control valve lever and

overtravel body while tightening nut.

Leak Tests

Compressor, Reservoir and Regulator

1.
Remove assembly intact.

2.
Connect test gauge to regulator. Inflate reservoir

through service valve to 80-110 psi.

3.
Route an 8" rubber hose between vacuum and vent

ports,
(fig. 16).

4.
Submerge in water and observe for air leaks at:

Reservoir weld seam.

Reservoir to compressor O-ring.

Regulator to compressor O-ring.

Regulator boot-defective internal.O-rihg.

Diaphragm between first and second stage housings.

' Tightening through bolts may correct the leak.

Cover gasket and retainer screw. A few bubbles here

is not a leak. A continuous stream indicates defec-

tive compressor check valves.

Service valve.

Test gauge connections.

5.
Correct any leaks detected by either tightening

screws or replacing parts.

CHEVROLET CHASSIS SERVICE MANUAL

SPECIFICATIONS
2

RIDING HEIGHT MEASUREMENT*

Chevrolet
All Biscayne
and Bel Air 2 and 4
Doors,

All Impala
and
Caprice
4
Doors
and

All Station Wagons
. . . .

All Impala
and
Caprice
2
Doors
. . . . .
5-1/8"
± 1/2"

5-3/8"
± 1/2"

Chevelle
All Sedans

SS Coupe
and
Convertible

El Camino
and
Station W*
1-3/811
± 1/2"

1-1/8"
± 1/2"

..
2" ± 1/2"

Chevy
u
All
4 and 6
Cylinder Standard
2 and 4
Doors,

All Station Wagons,
and 6
Cylinder Nova
4
Door

All
8
Cylinder Standard
2 and 4
Doors,
All

Nova
2
Doors
and 8
Cylinder Nova
4
Door
. . .
3-3/4'

3-1/4'
±
1/2'

±
1/2'

Corvette
With
327 or 427
Engine
. . . .

327 Engine with
A/C or 427
Engine with
A/C,
P.S.,.and
P.B

Convertible with
327
Engine, Hardtop,
A/C, P.S., P.B., and
Powerglide

427 Engine with Optional Suspension
.
2-1/2"

.
2"

1-1/2"

1-1/2"
±
1/2"

±1/2"

±
1/2"

±
1/2"

Camaro
With
230
Engine
..... . . .

With
250
Engine
.... ...

With
283 - 327 and
350 Engine
2-3/4"

2-7/8"

2-5/8"
± 1/2"

± 1/2"

± 1/2"

•Must be within 1/2" from side to side

BOLT TORQUES

TORQUES

Spherical Joint

Upper Stud
Nut

Lower Stud
Nut

Stud
to
Control

Arm Nuts (Service)

Lower Forging
Nut

Steering
Arm
Attaching Nuts

Shock Absorber

Upper Shaft
Nut

Lower Attachment

Bracket
to
Spring Tower

Stabilizer
Bar

Frame Bracket Bolts

Link Nuts

Strut
Rod

Rod
to Arm Nut

Adjustment
Nut

Front Spring

Spring Seat
to
Control

Arm Nuts

Lower Control
Arm

Inner Pivot Nuts

Upper Control Arm

Attaching Nuts

Collar Bolts

Brake Anchor Pin

Drum Brakes

Brake Anchor Bolt

Disk Brakes

Lower Control Arm

Cross Shaft Bolts

Front

Rear .

Wheel Stud Nuts
Chevrolet

50 ft. lbs.

80 ft lbs.

25 ft. lbs.

40 ft. lbs.

50 ft. lbs.

8 ft. lbs.

15 ft. lbs.

—

15 ft lbs.

8 ft. lbs.

70 ft lbs.

80 ft lbs.

115 ft lbs.

75 ft lbs.

45 ft lbs.

130 ft lbs.

—

65 ft lbs.
Chevelle

50 ft lbs.

80 ft lbs.

25 ft. lbs.

—

85 ft lbs.

8 ft lbs.

20 ft lbs.

—

15 ft lbs.

8 ft lbs.

—

80 ft lbs.

50 ft. lbs.

45 ft. lbs.

130 ft lbs.

—

65 ft lbs.
Chevy H

45 ft lbs.

45 ft lbs.

25 ft lbs.

—

65 ft. lbs.

8 ft lbs.

9 ft lbs.

9 ft. lbs.

9 ft. lbs.

10 ft. lbs.

45 ft lbs.

80 ft lbs.

30 ft lbs.

65 ft lbs.

50 ft. lbs.

50 ft lbs.

130 ft lbs.

_

—

65 ft lbs.
Corvette

45 ft lbs.

20 ft lbs.

20 ft lbs.

—

20 ft lbs.

10 ft lbs.

—

10 ft lbs.

10 ft. lbs.

—

95 ft lbs.

35 ft lbs.

40 ft lbs.

75 ft lbs..

70 ft lbs.

135 ft lbs.

75 ft lbs.
Camaro

50 ft lbs.

65 ft lbs.

25 ft lbs.

—

85 ft lbs.

8 ft lbs.

20 ft lbs.

.
—

15 ft. lbs.

8 ft._lbs.

_

85 ft lbs.

50 ft lbs.

45 ft lbs.

130 ft lbs.

_

—

65 ft lbs.

CHEVROLET CHASSIS SERVICE MANUAL

SPECIFICATIONS
4

Stabilizer Shaft

Bracket to Frame

Bracket to Torque Arm

Link Bushings

Rebound Bumper to Frame

Crossmember to Frame

Crossmember to Carrier

Carrier Front Support

to Crossmember

Front Bolt

Rear Bolt

Drive Spindle Nut

Drive Spindle Support

to Torque Arm

Strut Rod

to Spindle Support

Bracket to Carrier

Camber Cam

Torque Arm Pivot

Spring Link Bolt to

Torque Arm

Wheel Alignment #

Camber (Degrees)

Toe-in (Total)
Chevrolet
Chevelle

Chevy II
I

Cama.ro
j Corvette

i

|
120

1
120

25

j
. ' 20

25

!
60

\
65

!
50*

50

100*

30

80*

45

65

50

Install nut to expose hole (Corvette

then insert cotter pin. only)

-
Neg.
1/2° ± 1/2°

1/32" to 3/32"

©Station Wagon All 4-Link System

•Plus additional torque necessary to line up cotter pin hole.

# Camber must not vary more than 1/2 degree from side to

set.
side.
Toe setting must be made after camber is

RIDING
HEIGHT

Body Style

2 Door Sedan

4 Door Sedan

4 Door Sport Sedan

Sport Coupe

Convertible

Station Wagon

Sedan Pickup

Super Sport Coupe
&
Convertible
6-1/2"

6-7/16"

6-7/16"

6-1/2"

6-7/16"

6-7/8"
± 3/8".

±3/8"

±3/8"

± 3/8"

± 3/8"

± 3/8"
5.0" ±

5.0" ±

5.0" ±

4-3/4"

6-1/2"

6-1/4"

6-3/8"

3-3/8"
3/8"

3/8"

3/8"

± 3/8"

± 3/8"

± 3/8"

± 3/8"

± 3/8"
6-1/8"

6-1/16'

4-15/16'

5-13/16
± 3/8"

± 3/8"

1
± 3/8"

*
± 3/8"
5-1/4"
± 3/8"

5-3/16" ± 3/8"

All settings are made at curb weight.

CHEVROLET
CHASSIS SERVICE MANUAL

SPECIFICATIONS
8

Displacement

Horsepower

VALVE SYSTEM:

Lifter

Rocker
Arm
Ratio

Valve Lash
Intake

Exhaust

Face Angle
(Int.
&
Exh.

Seat Angle
(Int. & Exh.)

Seat Runout
(Int. & Exh.)

Seat Width

Stem

Clearani

Valve

Spring

(Outer)

Valve

Spring

(Inner)

Damper
Intake

Exhaust

Production
Int.

Exh.

Service

Free Length

Pressure

lbs.
@
in.
Closed

Open

Installed Height

±1/32"

Free Length

Pressure

lbs.
@
in.
Closed

Open

Installed Height

±1/32"

Free Length

Approx,# of Coils
153

90
194

120
230

140
250

155
283

195
327

210
275

300
325

350
350

295
39e

325

350
427

385

390
400
425
435

1.75:1
Hydraulic

1.50:1

One

One
Mechanical

1.70:1

Turn Down From Zero Lash

Turn Down From Zero Lash
.022"*

.024"*
.024"*

.028"*

...••:•:••
••-•. , 45« •

46°**

.002"
(Max.)

1/32" - 1/16"

1/16" - 3/32"

.0015"-.0032"
.0010"
-.0027"

.0010"-.0027"
<0010It-.0025"

.0012
'-.0027"

Hi Limit Production
+ .001"
Intake
- .002"
Exhaust

2.08"

78-86

@

1.66"

170-180

@

1.26"
1.92"

54-64 @

170-184

@
1.33"
1.90"

1.66"

180-

192

@

1.27"

1
21/32
2.03"

.
. N.A. ' ' .

N.A."

1
5/32
2.11"

84-96

@

1.88"

210-

230

@

1.46"
2.09"

94-106

...©••

1.88"

303-327

@

1.38"

1
2.21"

69-81

@

1.88"

181-205

@

1.32"

7/8

N.A.

1.94tf

4
N.A.

N.A.
N.A.

N.A.

N.A.

1,94"

4
: •
1.94"-2.00"

3
3/4
2.12"

37-45

@

1.78"

92-110

@

1.22"

13/4

2.07'*-

1.95
»

4
1/3
2.09"

94-106

®

1.88"

303-327

@

1.38"

N.A.
.

N.A.

NJl.

1.94"-

2.00"

3 3/4

*Engine at operating temperature and running.

••Aluminum Heads 45°

CHEVROLET CHASSIS SERVICE MANUAL