1973 CHEVROLET VEGA

1973 CHEVROLET VEGA

Model Designations:

Chevrolet Vega 2300, Series 1V, 4 Cylinder

Chevrolet Vega, Body Styles:

2 Door Notchback Sedan, 4 Passenger, Body #11

Base Price: $2,087; Shipping Weight: 2,219 Pounds

Production Total: 58,425

2 Door Hatchback Coupe, 4 Passenger, Body #77

Base Price: $2,192; Shipping Weight: 2,313 Pounds

Production Total: 266,124

2 Door Station Wagon, 4 Passenger; Body #15

Base Price: $2,323; Shipping Weight: 2,324 Pounds

Production Total; 102,751

2 Door Panel Wagon, 2 Passenger, Body #05

Base Price: $2,107; Shipping Weight: 2,206 Pounds

Production Total: Not Available

General Specifications:

Wheelbase:

All Styles: 97"

Overall Length:

All Styles: 173"

Tire Sizes:

All Styles: 6.00 X 13"

Engine Specifications, 140 Cu. In., 4 Cylinder, 72 HP:

Engine Type: In-Line 4 Cylinder, Overhead Cam

Bore & Stroke: 3.500" X 3.625"

Engine Displacement: 140 Cu. In.

Compresssion Ratio: 8.00 to 1

Taxable Horsepower: 19.6

Horsepower: 72 @ 4,400 RPM

Torque: 100 Ft. Lbs. @ 2,000 RPM

Normal Oil Pressure: 40 PSI

Carburetor: 1 Barrel

Engine Specifications, 140 Cu. In., 4 Cylinder, 85 HP:

Engine Type: In-Line 4 Cylinder, Overhead Cam

Bore & Stroke: 3.500" X 3.625"

Engine Displacement: 140 Cu. In.

Compresssion Ratio: 8.00 to 1

Taxable Horsepower: 19.6

Horsepower: 85 @ 4,800 RPM

Torque: 115 Ft. Lbs. @ 2,400 RPM

Normal Oil Pressure: 40 PSI

Carburetor: 2 Barrel

Capacities:

4 Cylinder, 140 Cu. In. Engine:

Cooling System:

With Heater: 8.6 Quarts

With Air Conditioning: 9.0 Quarts

Radiator Cap Pressure:

With Air Conditioning: 15 PSI

Without Air Conditioning: 15 PSI

Thrermostat Opening: 195 Degrees

Fuel Tank: 11 Gallons

Engine Oil Refill: 4 Quarts, with Filter

Transmission Oil:

3 Speed: 3 Pints

4 Speed: 3 Pints

Automatic Transmission:

Powerglide: 2-1/2 Quarts

Hydramatic: 4 Quarts

Rear Axle: 2.8 Pints

Tune Up Specifications, 4 Cylinder, 72 H.P. Engine:

Spark Plug Type: AC R42TS

Spark Plug: Gap .035"

Point Gap:

New Points: .019"

Used Points: .016"

Dwell Angle: 31-34 Degrees

Firing Order: 1-3-4-2

Ignition Timing: 8 Degrees BTDC on Pulley

Engine Idle Speed:

Standard Transmission: 1,000 RPM

Automatic Transmission: 750 RPM, in Drive

Tune Up Specifications, 4 Cylinder, 85 H.P. Engine:

Spark Plug Type: AC R42TS

Spark Plug: Gap .035"

Point Gap:

New Points: .019"

Used Points: .016"

Firing Order: 1-3-4-2

Ignition Timing:

Standard Transmission: 10 Degrees BTDC on Pulley

Automatic Transmission: 12 Degrees BTDC on Pulley

Engine Idle Speed:

Standard Transmission: 1,200 RPM

Automatic Transmission: 700 RPM, in Drive

Valve Specifications, 72 Horsepower, 4 Cylinder Engine:

Valve Lash (Cold):

Intake: .015"

Exhaust: .030"

Valve Angles:

Seat: 46 Degrees

Face: 45 Degrees

Valve Spring Height: 1.746"

Valve Spring Pressure: 186 Lbs @ 1.29 inches

Valve Stem Clearance: Intake .001"-.0027"

Exhaust .001"-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Valve Specifications, 85 Horsepower, 4 Cylinder Engine:

Valve Lash (Cold):

Intake: .015"

Exhaust: .030"

Valve Angles:

Seat: 46 Degrees

Face: 45 Degrees

Valve Spring Height: 1.750"

Valve Spring Pressure: 190 Lbs @ 1.31 inches

Valve Stem Clearance: Intake .001"-.0027"

Exhaust .001"-.0027"

Valve Stem Diameter:

Intake: .3410"-.3417"

Exhaust: .3410"-.3417"

Pistons, Pins, Rings, Crankshaft & Bearings Data, 4 Cylinder:

Piston Clearance: .0018"-.0028"

Piston Rings:

Ring End Gap:

Compression:

Top Ring: .015"

Lower Ring: .009"

Oil: .010"

Wrist Pin Diameter: .9272"

Rod Bearings:

Shaft Diameter: 1.999"-2.000"

Rod Bearing Clearance: .0007"-.0038"

Main Bearings:

Shaft Diameter: 2.2983"-2.2993"

Main Bearing Clearance:

#1: .0003"-.002"

Others: .0003"-.003"

Thrusk on Bearing #4

Crankshaft End Play: .002"-.007"

Engine Tightening Specifications, 140 Cu. In. Engine:

Spark Plugs: 15 Ft. Lbs.

Cylinder Head Bolts: 60 Ft. Lbs.

Intake Manifold: 30 Ft. Lbs.

Exhaust Manifold: 30 Ft. Lbs.

Cam Cover: 35 Inch Lbs.

Connecting Rod Cap Bolts: 35 Ft. Lbs.

Main Bearing Cap Bolts: 65 Ft. Lbs.

Flywheel to Crankshaft: 60 Ft. Lbs.

Vibration Damper or Pulley: Pulley to Damper Screws: 80 Ft. Lbs.

Rear Axle Specifications:

Carrier Type: Integral

Ring Gear & Pinion Backlash:

Method: Shims

Adjustment: .005"-.008"

Pinion Bearing Preload:

Method: Spacer

New Bearings: 10-25 Inch Lbs.

Used Bearings: 8-12 Inch Lbs.

Differential Bearing Preload:

Method: Shims

Brake Specifications:

Brake Drum Diameter: 9.000"

Wheel Cylinder Bore:

Front Disc Brakes: 1-7/8"

Rear: 3/4"

Master Cylinder Bore:

Disc Brakes: 3/4"

Power Brakes: 3/4"

Wheel Alignment Specifications:

Caster: -3/4 Degree

Camber:

Left: +1/4 Degrees

Right: +1/4 Degrees

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

Alternator Specifications:

Model: 1100545

Rated Hot Output: 32 Amperes

Field Current, 12 Volts @ 80 Degrees: 4.0 to 4.5 Amperes

Cold Output @ 14 Volts:

5,000 RPM: 31 Amperes

Regulator: Integral

Model: 1100546

Rated Hot Output: 55 Amperes

Field Current, 12 Volts @ 80 Degrees: 4.0 to 4.5 Amperes

Cold Output @ 14 Volts:

5,000 RPM: 50 Amperes

Regulator: Integral

Model: 1100559

Rated Hot Output: 32 Amperes

Field Current, 12 Volts @ 80 Degrees: 4.0 to 4.5 Amperes

Cold Output @ 14 Volts:

5,000 RPM: 31 Amperes

Regulator: Integral

Model: 1100560

Rated Hot Output: 55 Amperes

Field Current, 12 Volts @ 80 Degrees: 4.0 to 4.5 Amperes

Cold Output @ 14 Volts:

5,000 RPM: 50 Amperes

Regulator: Integral

Distributor Specifications:

Distributor #1110496

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 800 RPM

Intermediate Advance: 1 Degree @ 875 RPM

Intermediate Advance: 6 Degrees @ 1,600 RPM

Full Advance: 11 Degrees @ 2,400 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger Movement: 7-1/2 Inches

Maximum Vacuum Advance: 12 Degrees @ 15" Vacuum

Starting Motor Data:

Standard Transmission:

Starter # 1108195

Free Speed Test: 50-75 Amperes, 9 Volts, @ 6,500-10,000 RPM

Torque Test: 435-535 Amperes, 3.0 Volts

Automatic Transmission:

Starter # 1108196

Free Speed Test: 50-75 Amperes, 9 Volts, @ 6,500-10,000 RPM

Torque Test: 435-535 Amperes, 3.0 Volts

Carburetor Data:

Rochester Carburetor Adjustments:

Note: Carburetors listed below include other models than the Vega.

Rochester Type M & MV:

Carburetor #: 7043014

Float Level: 1/4"

Metering Rod: .080"

Choke Rod: .245"

Vacuum Break: .300"

Unloader: .500"

Fast Idle Speed: 1,800 RPM

Rochester Type M & MV:

Carburetor #: 7043017

Float Level: 11/32"

Metering Rod: .080"

Choke Rod: .275"

Vacuum Break: .350"

Unloader: .500"

Fast Idle Speed: 1,800 RPM

Rochester Type M & MV:

Carburetor #: 7043023

Float Level: 1/8"

Choke Rod: .090"

Vacuum Break: .140"

Unloader: .375"

Fast Idle Speed: 2,000 RPM

Rochester Type M & MV:

Carburetor #: 7042324

Float Level: 1/8"

Choke Rod: .070"

Vacuum Break: .120"

Unloader: .375"

Fast Idle Speed: 2,200 RPM

Rochester Type M & MV:

Carburetor #: 7043033

Float Level: 11/32"

Choke Rod: .190"

Vacuum Break: .140"

Unloader: .375"

Fast Idle Speed: 2,000 RPM

Rochester Type M & MV:

Carburetor #: 7043034

Float Level: 1/8"

Choke Rod: .070"

Vacuum Break: .120"

Unloader: .375"

Fast Idle Speed: 2,200 RPM

Rochester Type M & MV:

Carburetor #: 7043323

Float Level: 11/32"

Choke Rod: .090"

Vacuum Break: .140"

Unloader: .375"

Fast Idle Speed: 2,000 RPM

Rochester Type M & MV:

Carburetor #: 7043324

Float Level: 1/8"

Choke Rod: .070"

Vacuum Break: .120"

Unloader: .375"

Fast Idle Speed: 2,200 RPM

Rochester Type M & MV:

Carburetor #: 7043333

Float Level: 11/32"

Choke Rod: .090"

Vacuum Break: .140"

Unloader: .375"

Fast Idle Speed: 2,000 RPM

Rochester Type M & MV:

Carburetor #: 7043334

Float Level: 1/8"

Choke Rod: .070"

Vacuum Break: .120"

Unloader: .375"

Fast Idle Speed: 2,200 RPM

Rochester Type 2G, 2GC, & 2GV:

Carburetor #: 7043100

Float Level: 13/16"

Float Drop: 1-9/32"

Pump Rod: 1-9/32"

Vacuum Break: .080"

Choke Rod: .150"

Choke Unloader: .215"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043101

Float Level: 13/16"

Float Drop: 1-9/32"

Pump Rod: 1-9/32"

Vacuum Break: .080"

Choke Rod: .150"

Choke Unloader: .215"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043105

Float Level: 13/16"

Float Drop: 1-9/32"

Pump Rod: 1-9/32"

Vacuum Break: .080"

Choke Rod: .150"

Choke Unloader: .215"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043111

Float Level: 19/32"

Float Drop: 1-9/32"

Pump Rod: 1-1/2"

Vacuum Break: .140"

Choke Rod: .200"

Choke Unloader: .250"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043112

Float Level: 19/32"

Float Drop: 1-9/32"

Pump Rod: 1-7/16"

Vacuum Break: .130"

Choke Rod: .245"

Choke Unloader: .325"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043113

Float Level: 19/32"

Float Drop: 1-9/32"

Pump Rod: 1-1/2"

Vacuum Break: .140"

Choke Rod: .200"

Choke Unloader: .250"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043114

Float Level: 19/32"

Float Drop: 1-9/32"

Pump Rod: 1-7/16"

Vacuum Break: .130"

Choke Rod: .245"

Choke Unloader: .325"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043118

Float Level: 19/32"

Float Drop: 1-9/32"

Pump Rod: 1-7/16"

Vacuum Break: .130"

Choke Rod: .245"

Choke Unloader: .325"

Fast Idle Speed: 1,600 RPM

Carburetor #: 7043120

Float Level: 13/16"

Float Drop: 1-9/32"

Pump Rod: 1-9/32"

Vacuum Break: .080"

Choke Rod: .150"

Choke Unloader: .215"

Fast Idle Speed: 1,600 RPM

Chevrolet Paint Colors & Codes:

Code Color Name

10 Antique White

19 Texedo Black

23 Medium Blue

24 Light Blue

26 Dark Blue

29 Midnight Blue

41 Medium Green

42 Dark Green

44 Light Green

46 Green-Gold

48 Midnight Green

51 Light Yellow

53 Placer Gold

56 Chamois

60 Light Copper

61 Light Orange

62 Medium Bronze

64 Silver

66 Taupe

68 Dark Brown

74 Dark Red

75 Medium Red

81 Beige

86 Bright Orange

97 Medium Orange

Popular Options:

Power Steering; Air Conditioning; AM Radio; GT Package, Estate Wagon Package, Automatic Transmission, and more.

1973 Chevrolet Vega Historical Data:

The 1973 Chevrolet model year introduction was on September 21, 1972.

Total 1973 Chevrolet Vega Production was 427,300.

Promotional Model Cars:

Plastic: Vega Hatchback.