1972 CORVETTE

General Specifications

Chasis:

Wheelbase: 98"

Overall Length: 182.5"

Tire Size: F70 x 15 inches

Body Data:

Sting Ray, 8 Cylinder:

2 Door Fastback Coupe, 2 Passenger, Series #Z; Body #37

Base Price: $5,472; Shipping Weight: 3,215 Pounds;

Production Total: 20,485

2 Door Convertible, 2 Passenger, Series #Z; Body #67

Base Price: $5,246; Shipping Weight: 3,215 Pounds;

Production Total: 6,508

8 Cylinder Engine Specifications:

200 HP Engine:

Engine Type: V-Type 8 Cylinder, Overhead Valve

Bore & Stroke: 4.00" x 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 8.5 to 1;

Taxable Horsepower: 51.23

Horsepower: 200 @ 4,400 RPM

Maximum Torque: 300 Ft Lbs @ 2,800 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

255 HP Engine:

Engine Type: V-Type 8 Cylinder, Overhead Valve

Bore & Stroke: 4.00" x 3.48"

Engine Displacement: 350 Cu. In.

Compression Ratio: 9.0 to 1;

Taxable Horsepower: 51.23

Horsepower: 255 @ 5,600 RPM

Maximum Torque: 280 Ft Lbs @ 4,000 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

270 HP Engine:

Engine Type: V-Type 8 Cylinder, Overhead Valve

Bore & Stroke: 4.251" x 4.00"

Engine Displacement: 454 Cu. In.

Compression Ratio: 8.5 to 1;

Taxable Horsepower: 57.80

Horsepower: 270 @ 4,000 RPM

Maximum Torque: 390 Ft Lbs @ 3,200 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

Available Axle Ratios:

Not Available

1972 CORVETTE

Tune Up Specifications:

8 Cylinder 350 Cu. In. Engine, 200 HP:

Spark Plug: AC R44T

Spark Plug Gap .035"

Point Gap: .019"

Distributor Cam Angle: 29-31 Degrees

Firing Order: 1-8-4-3-6-5-7-2

Ignition Timing: 8 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 800 RPM

Automatic Transmission: 600 RPM in Drive

8 Cylinder 350 Cu. In. Engine, 255 HP:

Spark Plug: AC R44T

Spark Plug Gap .035"

Firing Order: 1-8-4-3-6-5-7-2

Ignition Timing: 4 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 900 RPM

8 Cylinder 454 Cu. In. Engine:

Spark Plug: AC R44T

Spark Plug Gap .035"

Point Gap: .019"

Dwell Angle: 29-31 Degrees

Firing Order: 1-8-4-3-6-5-7-2

Ignition Timing: 8 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 750 RPM

Automatic Transmission: 600 RPM in Drive

Valve Specifications:

8 Cylinder Engine, 350 Cu. In., 200 H.P.:

Operating (Tappet) Clearance, Hot:

Intake: 1 Turn

Exhaust: 1 Turn

Valve Seat Angle:

Seat: 46 Degrees

Face 45 Degrees

Valve Spring Height Installed: 1.70"

Valve Spring Pressure: 200 Lbs @ 1.25"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .0012"-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

8 Cylinder Engine, 350 Cu. In., 255 H.P.:

Operating (Tappet) Clearance, Hot:

Intake: .024"

Exhaust: .030"

Valve Seat Angle:

Seat: 46 Degrees

Face 45 Degrees

Valve Spring Height Installed: 1.70"

Valve Spring Pressure: 200 Lbs @ 1.25"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .001"-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

8 Cylinder Engine, 454 Cu. In.:

Operating (Tappet) Clearance, Hot:

Intake: 1 Turn

Exhaust: 1 Turn

Valve Seat Angle:

Seat: 46 Degrees

Face 45 Degrees

Valve Spring Height Installed: 1.88"

Valve Spring Pressure: 240 Lbs @ 1.38"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .0012"-.0027"

Valve Stem Diameter:

Intake: .3715"-.3722"

Exhaust: .3713"-.3720"

Pistons, Pins, Rings, Crankshaft, & Bearings Data:

8 Cylinder Engine, 350 Cu. In.:

Piston Clearance: .0007"-.0013"

Ring End Gap:

Compression:

Top Ring: .010"

Lower Ring: .013"

Oil: .015

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 2.099"-2.100"

Rod Bearing Clearance: .0013"-.0035"

Main Bearings:

Shaft Diameter:

#1, 2, 3, & 4: 2.4484"-2.4493"

#5: 2.4479"-2.4488"

Main Bearing Clearance:

#1: .0008"-.0020"

# 2, 3, & 4: .0011"-.0023"

#5, .0017"-.0033"

Thrust on Rear Bearing: #5

Crankshaft End Play: .002"-.006"

8 Cylinder Engine, 427 Cu. In., 365 H.P.:

Piston Clearance: .0024"-.0034"

Ring End Gap:

Compression: .010"

Oil: .010"

Wrist Pin Diameter: .9897"

Rod Bearings:

Shaft Diameter: 2.199"-2.200"

Rod Bearing Clearance: .0009"-.0025"

Main Bearings:

Shaft Diameter:

#1: 2.7485"-2.7494"

2, 3, & 4: 2.7481"-2.7490"

#5: 2.7478"-2.7488"

Main Bearing Clearance:

#1, 2, 3, & 4: .0013"-.0025"

#5: .0024"-.0040"

Thrust on Rear Bearing: #5

Crankshaft End Play: .006"-.010"

Capacities:

350 Cu. In. Engine, 200 H.P.:

Cooling System:

Without Heater: 16 Quarts

With Heater: 17 Quarts

With Air Conditioning: 18 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thermostat Opening Temperature: 195 Degrees

Fuel Tank: 18 Gallons

Engine Oil Refill: 5 Quarts with New Filter

Transmission Oil:

4 Speed Manual: 3 Pints

Automatic Transmission: 4 Quarts

Rear Axle: 4 Pints

350 Cu. In. Engine, 255 H.P.:

Cooling System:

Without Heater: 16 Quarts

With Heater: 17 Quarts

With Air Conditioning: 18 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thermostat Opening Temperature: 180 Degrees

Fuel Tank: 18 Gallons

Engine Oil Refill: 5 Quarts with New Filter

Transmission Oil:

Standard Transmission:

4 Speed: 3 Pints

Rear Axle: 4 Pints

454 Cu. In. Engine:

Cooling System:

Without Heater: 22 Quarts

With Heater: 23 Quarts

With Air Conditioning; 24 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thermostat Opening Temperature: 195 Degrees

Fuel Tank: 18 Gallons

Engine Oil Refill: 6 Quarts with New Filter

Transmission Oil

4 Speed Manual: 3 Pints

Automatic Transmission:

Refill: 4 Quarts

Rear Axle: 4.0 Pints

Engine Tightening Specifications:

350 Cu. In. 8 Cylinder:

Spark Plugs: 15 Ft. Lbs

Cylinder Head Bolts: 65 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs.

Exhaust Manifold:

Outside Bolts: 20 Ft. Lbs

Inside Bolts: 30 Ft. Lbs.

Rocker Arm Stud: 50 Ft. Lbs.

Rocker Arm Cover: 45 Inch Lbs.

Connecting Rod Cap Bolts: 45 Ft. Lbs.

Main Bearing Cap Bolts: 75 Ft. Lbs.

Outer Bolts on Engines with 4 Bolt Caps: 65 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs

Vibration Damper: 60 Ft. Lbs.

454 Cu. In. 8 Cylinder:

Spark Plugs: 15 Ft. Lbs

Cylinder Head Bolts: 80 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs.

Exhaust Manifold: 20 Ft. Lbs

Rocker Arm Stud: 50 Ft. Lbs.

Rocker Arm Cover: 50 Inch Lbs.

Connecting Rod Cap Bolts: 50 Ft. Lbs

Main Bearing Cap Bolts: 105 Ft. Lbs.

Flywheel to Crankshaft: 65 Ft. Lbs

Vibration Damper: 85 Ft. Lbs.

Alternators:

8 Cylinder Engine:

#1100543

Rated Hot Output: 42 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 37 Amperes

Voltage Regulator: Integral

#1100544

Rated Hot Output: 61 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 55 Amperes

Voltage Regulator: Integral

#1100950

Rated Hot Output: 42 Amperes

Field Current @ 12 Volts, 80 Degrees: 4.0-4.5 Volts

Output @ 14 Volts, 5,000 RPM: 37 Amperes

Voltage Regulator: Integral

Distributors:

8 Cylinder Engine:

#1112050

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 435 RPM

Intermediate Advance: 1 Degree @ 670 RPM

Intermediate Advance: 5-1/2 Degrees @ 1,200 RPM

Full Advance: 9 Degrees @ 2,100 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 8"

Maximum Vacuum Advance: 6 Degrees @ 15" Vacuum

#1112051

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 430 RPM

Intermediate Advance: 1 Degree @ 570 RPM

Intermediate Advance: 7 Degrees @ 1,000 RPM

Full Advance: 11 Degrees @ 1,950 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 8"

Maximum Vacuum Advance: 10 Degrees @ 17" Vacuum

Starting Motors:

8 Cylinder, 350 Cu. In. Engine:

#1108418

Brush Tension: 35 Ounces (Minimum)

No Load Test: 65-95 Amps, 9 Volts @ 7,500-10,500 RPM

#1108430

Brush Tension: 35 Ounces (Minimum)

No Load Test: 65-95 Amps, 9 Volts @ 7,500-10,500 RPM

8 Cylinder, 454 Cu. In. Engines:

#1108429

Brush Tension: 35 Ounces (Minimum)

No Load Test: 65-95 Amps, 9 Volts @ 7,500-10,500 RPM

8 Cylinder, 427 Cu. In. Engines:

#1108400

Brush Tension: 35 Ounces (Minimum)

No Load Test: 65-95 Amps, 9 Volts @ 7,500-10,500 RPM

Brake Specifications:

Wheel Cylinder Bore:

Disk Brake:

Front 1-7/8"

Rear: 1-3/8"

Master Cylinder Bore: 1"

Rear Axle Specifications:

Carrier Type: Integral

Ring Gear & Pinion Backlash:

Method: Check with Dial Gauge

Adjustment: .005"-.008"

Pinion Bearing Preload:

Method: Spacer

New Bearing Adjustment: 20-25 Inch Lbs.

Used Bearing Adjustment: 5-10 Inch Lbs.

Differential Bearing Preload:

Method: Shims

New Bearing Adjustment: .010"

Used Bearing Adjustment: .010"

Wheel Alignment Specifictions:

Manual Steering:

Caster: + 1 Degrees

Camber: 3/4 Degrees

Toe In: 3/16 to 5/16""

Toe Out on Turns:

Inner Wheel: 20 Degrees

Power Steering:

Caster: + 2-/14 Degrees

Camber: 3/4 Degrees

Toe In: 3/16 to 5/16""

Toe Out on Turns:

Inner Wheel: 20 Degrees

Rear Wheel Alignment:

Camber: -7/8 Degrees

Toe In: 1/32" to 3/32"

Carburetor Types:

8 Cylinder Engines:

Holley Model 4160

Carburetor #R6239-A

Pump Lever Clearance: .015"

Choke Setting: 1.320"

Choke Unloader Setting: .350""

Fast Idle:

Bench: .025"

On Car: 2,350 RPM

Choke Vacuum Break: .350"

Rochester Quadrajet

Carburetor #7042202, 7042203

Float Level: 1/4"

Pump Rod:

Adjustment: 3/8"

Choke Rod: .100"

Vacuum Break: .215"

Air Valve Dashpot: .020"

Choke Unloader: .450"

Air Valve Valve Spring Wind-Up: 1/2"

Rochester Quadrajet

Carburetor #7042216, 7042217

Float Level: 1/4"

Pump Rod:

Adjustment: 3/8"

Choke Rod: .100"

Vacuum Break: .250"

Air Valve Dashpot: .020"

Choke Unloader: .450"

Air Valve Valve Spring Wind-Up: 7/16"

Rochester Quadrajet

Carburetor #7042902, 7042903

Float Level: 1/4"

Pump Rod:

Adjustment: 3/8"

Choke Rod: .100"

Vacuum Break: .215"

Air Valve Dashpot: .020"

Choke Unloader: .450"

Air Valve Valve Spring Wind-Up: 1/2"

VIN Numbers:

1Z67K2S500001 - 1Z67K2S527004

OR

1Z37K2S500001 - 1Z37K2S527004

Popular Options:

Leather Seats; Custom Interior Trim; Power Windows; Auxiliary Hardtop for Convertibles; Vinyl Cover for Auxiliary Hardtop; Rear Window Defroster; Air Conditioning; Posi-Traction Axle; Tilt-Telescopic Steering Wheel; Power Steering; Power Brakes; Special Heavy Duty Brakes; Automatic Transmission; Bright Metal Wheel Covers; Three Point Seat Belts; AM-FM Radio; AM-FM Stereo Radio; White Stripe Tires; White Letter Tires; Air Injection Reactor; Lt-1 Package; Various Engine Options.

Paint Colors:

Code Color

912 Sunflower Yellow

924 Pewter Silver

945 Bryar Blue

946 Elkhart Green

972 Classic White

973 Mille Milga Red

979 Targa Blue

987 Ontario Orange

988 Steel Cities Gray

989 War Bonnet Yellow

1972 Corvette Promotional Model Cars Available:

Plastic: Corvette Sting Ray Coupe

1972 Corvette Historical Data:

1972 Corvette model year introduction date was on September, 23, 1971.

Model Year Production: 27,004 Cars

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