1973 CORVETTE

1973 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: $5,921; Shipping Weight: 3,407 Pounds;

Production Total: 25,520

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

Base Price: $5,685; Shipping Weight: 3,407 Pounds;

Production Total: 4,943

8 Cylinder Engine Specifications:

190 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: 190 @ 4,400 RPM

Maximum Torque: 270 Ft Lbs @ 2,800 RPM

Normal Oil Pressure: 40 PSI

One, 4 Barrel Carburetor

250 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: 250 @ 5,200 RPM

Maximum Torque: 285 Ft Lbs @ 4,000 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

275 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: 275 @ 4,000 RPM

Maximum Torque: 395 Ft Lbs @ 2,800 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

Available Axle Ratios:

Not Available

1973 CORVETTE

Tune Up Specifications:

8 Cylinder 350 Cu. In. Engine, 190 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: 12 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 900 RPM

Automatic Transmission: 600 RPM in Drive

8 Cylinder 350 Cu. In. Engine, 250 HP:

Spark Plug: AC R44T

Spark Plug Gap .035"

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

Ignition Timing: 8 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 900 RPM

Automatic Transmission: 700 RPM in Drive

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: 10 Degrees BTDC on Damper

Engine Idle Speed:

Standard Transmission: 900 RPM

Automatic Transmission: 600 RPM in Drive

Valve Specifications:

8 Cylinder Engine, 350 Cu. In., 190 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: 1.61"

Valve Spring Pressure: 189 Lbs @ 1.20"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .0012"-.0029"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

8 Cylinder Engine, 350 Cu. In., 250 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 .001"-.0029"

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: 300 Lbs @ 1.38"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .0012"-.0027"

Valve Stem Diameter:

Intake: .3715"-.3722"

Exhaust: .3713"-.3722"

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

8 Cylinder Engine, 350 Cu. In., 190 H.P.:

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, 350 Cu. In., 250 H.P.:

Piston Clearance: .0036"-.0042"

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:

Standard Transmission:

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

#5: .0023"-.0033"

Automatic Transmission:

#1: .0019"-.0031"

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

#5, .0023"-.0033"

Thrust on Rear Bearing: #5

Crankshaft End Play: .002"-.006"

8 Cylinder Engine, 427 Cu. In.:

Piston Clearance: .0018"-.0028"

Ring End Gap:

Compression: .010"

Oil: .015"

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, 190 H.P.:

Cooling System:

Without Heater: 17 Quarts

With Heater: 18 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, 250 H.P.:

Cooling System:

Without Heater: 17 Quarts

With Heater: 18 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: 23 Quarts

With Heater: 24 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:

#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

#1102353

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:

#1112098

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 550 RPM

Intermediate Advance: 1 Degree @ 775 RPM

Intermediate Advance: 3 Degrees @ 1,205 RPM

Intermediate Advance: 6 Degrees @ 1,650 RPM

Full Advance: 7 Degrees @ 2,100 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 6"

Maximum Vacuum Advance: 7-1/2 Degrees @ 14" Vacuum

#1112114

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 550 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: 6"

Maximum Vacuum Advance: 10 Degrees @ 15" Vacuum

#1112150

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 600 RPM

Intermediate Advance: 1 Degree @ 730 RPM

Intermediate Advance: 6 Degrees @ 1,100 RPM

Full Advance: 10 Degrees @ 2,500 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 6"

Maximum Vacuum Advance: 7-1/2 Degrees @ 12" Vacuum

#1112230

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 500 RPM

Intermediate Advance: 1 Degree @ 650 RPM

Intermediate Advance: 5 Degrees @ 1,300 RPM

Full Advance: 10 Degrees @ 2,100 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 4"

Maximum Vacuum Advance: 5 Degrees @ 5.8" Vacuum

Starting Motors:

8 Cylinder, 350 Cu. In. Engine:

#1108418