1971 CHEVROLET VEGA

Model Designations:

Chevrolet Vega, Series 2300, 4 Cylinder

Chevrolet Vega, Body Styles:

2 Door Sedan, 4 Passenger, Body #11

Base Price: $2,090; Shipping Weight: 2,146 Pounds

Production Total: 58,800

2 Door Coupe, 4 Passenger, Body #77

Base Price: $2,196; Shipping Weight: 2,190 Pounds

Production Total: 168,300

2 Door Station Wagon, 4 Passenger; Body #15

Base Price: $2,328; Shipping Weight: 2,230 Pounds

Production Total; 42,800

2 Door Panel Wagon, 2 Passenger, Body #05

Base Price: N/A; Shipping Weight: N/A

Production Total: 7,800

General Specifications:

Wheelbase:

All Styles: 97"

Tire Sizes:

All Styles: 6.00 X 13"

Engine Specifications, 140 Cu. In., 4 Cylinder, 80 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: 80 @ 4,400 RPM

Torque: 121 Ft. Lbs. @ 2,400 RPM

Normal Oil Pressure: 40 PSI

Carburetor: 1 Barrel

Engine Specifications, 140 Cu. In., 4 Cylinder, 90 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: 90 @ 4,800 RPM

Torque: 121 Ft. Lbs. @ 2,800 RPM

Normal Oil Pressure: 40 PSI

Carburetor: 2 Barrel

Capacities:

4 Cylinder, 140 Cu. In. Engine:

Cooling System:

With Heater: 6.5 Quarts

With Air Conditioning: 6.5 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: 2.4 Pints

4 Speed: 3 Pints

Automatic Transmission:

Refill: 2 Quarts

Total Capacity: 8-1/2 Quarts

Rear Axle: 2.5 Pints

Tune Up Specifications, 4 Cylinder, 80 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: 6 Degrees BTDC on Pulley

Engine Idle Speed:

Standard Transmission: 850 RPM

Automatic Transmission: 650 RPM, in Drive

Tune Up Specifications, 4 Cylinder, 90 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: 6 Degrees BTDC on Pulley

Automatic Transmission: 10 Degrees BTDC on Pulley

Engine Idle Speed:

Standard Transmission: 1,200 RPM

Automatic Transmission: 700 RPM, in Drive

Valve Specifications, 80 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, 90 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: 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"-.0027"

Main Bearings:

Shaft Diameter: 2.2983"-2.2992"

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: 25 Inch Lbs.

Used Bearings: 10 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 #1110492

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 590 RPM

Intermediate Advance: 1 Degree @ 800 RPM

Full Advance: 12 Degrees @ 2,000 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger Movement: 7 Inches

Maximum Vacuum Advance: 12 Degrees @ 15" Vacuum

Distributor #1110435

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 470 RPM

Intermediate Advance: 1 Degree @ 725 RPM

Full Advance: 11 Degrees @ 2,000 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger Movement: 7 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.

1 Barrel Carburetor:

Rochester Type M & MV:

Carburetor #: 7041014

Float Level: 1/4"

Metering Rod: .080"

Fast Idle Adjustment, off Car: .100"

Choke Rod: .160"

Vacuum Break: .200"

Unloader: .350"

Rochester Type M & MV:

Carburetor #: 7041017

Float Level: 1/4"

Metering Rod: .080"

Fast Idle Adjustment, off Car: .100"

Choke Rod: .180"

Vacuum Break: .230"

Unloader: .350"

Rochester Type M & MV:

Carburetor #: 7041023, 7041024

Float Level: 1/16"

Fast Idle Adjustment, off Car: .110"

Choke Rod: .120"

Vacuum Break: .200"

Unloader: .350"

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

Carburetor #: 7041101

Float Level: 27/32"

Float Drop: 1-3/4"

Pump Rod: 1-5/16"

Vacuum Break: .110"

Choke Rod: .075"

Choke Unloader: .215"

Carburetor #: 7041102

Float Level: 25/32"

Float Drop: 1-3/8"

Pump Rod: 1-17/32"

Vacuum Break: .170"

Choke Rod: .100"

Choke Unloader: .325"

Carburetor #: 7041106

Float Level: 9/16"

Float Drop: 1-7/8"

Pump Rod: 1-3/16"

Vacuum Break: .085"

Choke Rod: .080"

Choke Unloader: .200"

Carburetor #: 7041107

Float Level: 9/16"

Float Drop: 1-7/8"

Pump Rod: 1-3/16"

Vacuum Break: .100"

Choke Rod: .080"

Choke Unloader: .200"

Carburetor #: 7041110

Float Level: 27/32"

Float Drop: 1-3/4"

Pump Rod: 1-5/16"

Vacuum Break: .080"

Choke Rod: .040"

Choke Unloader: .215"

Carburetor #: 7041113

Float Level: 23/32"

Float Drop: 1-3/8"

Pump Rod: 1-17/32"

Vacuum Break: .180"

Choke Rod: .100"

Choke Unloader: .325"

Carburetor #: 7041114

Float Level: 25/32"

Float Drop: 1-3/8"

Pump Rod: 1-17/32"

Vacuum Break: .170"

Choke Rod: .100"

Choke Unloader: .325"

Carburetor #: 7041117

Float Level: 23/32"

Float Drop: 1-3/8"

Pump Rod: 1-17/32"

Vacuum Break: .170"

Choke Rod: .100"

Choke Unloader: .325"

Carburetor #: 7041118

Float Level: 23/32"

Float Drop: 1-3/8"

Pump Rod: 1-17/32"

Vacuum Break: .170"

Choke Rod: .100"

Choke Unloader: .325"

Carburetor #: 7041127

Float Level: 23/32"

Float Drop: 1-3/8"

Pump Rod: 1-17/32"

Vacuum Break: .170"

Choke Rod: .100"

Choke Unloader: .325"

Chevrolet Paint Colors & Codes:

Code Color Name

10 Classic White

13 Nevada Silver

16 Silver Steel

19 Texedo Black

24 Ascot Blue

25 Mediterranean Blue

26 Mulsanne Blue

29 Command Blue

39 Sea Aqua

42 Cottonwood Green

43 Lime Green

49 Antuque Green

52 Sunflower

53 Placer Gold

55 Champagne Gold

61 Sandalwood

62 Burnt Orange

63 Mesa Sand

65 Hugger Orange

67 Classic Copper

75 Cranberry Red

78 Rosewood

905 Nevada Silber

976 Mulsanne Blue

912 Sunflower

Popular Options:

Automatic Transmission; Power Steering; Air Conditioning; AM Radio and more.

1971 Chevrolet Vega Historical Data:

The 1971 Chevrolet model year introduction was on September 29, 1970.

Total 1971 Chevrolet Vega Production was 277,700.

Promotional Model Cars:

Plastic: Vega Hatchback.

Copyright 2001, Custom Solutions & Services