1971 CORVETTE

1971 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 #194; Body #37

Base Price: $5,536; Shipping Weight: 3,153 Pounds;

Production Total: 14,680

2 Door Convertible, 2 Passenger, Series #194; Body #67

Base Price: $5,299; Shipping Weight: 3,167 Pounds;

Production Total: 7,121

8 Cylinder Engine Specifications:

270 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: 270 @ 4,800 RPM

Maximum Torque: 360 Ft Lbs @ 3,200 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

330 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: 330 @ 5,600 RPM

Maximum Torque: 360 Ft Lbs @ 4,000 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

365 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: 365 @ 4,800 RPM

Maximum Torque: 495 Ft Lbs @ 3,200 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

425 HP Engine:

Engine Type: V-Type 8 Cylinder, Overhead Valve

Bore & Stroke: 4.251" x 4.00"

Engine Displacement: 454 Cu. In.

Compression Ratio: 9.0 to 1;

Taxable Horsepower: 57.80

Horsepower: 425 @ 5,600 RPM

Maximum Torque: 475 Ft Lbs @ 4,000 RPM

Normal Oil Pressure: 35-45 PSI

One, 4 Barrel Carburetor

Available Axle Ratios:

2.73:1; 3.08:1; 3.36:1; 3.55:1; 4.11:1; 4.56:1

1971 CORVETTE

Tune Up Specifications:

8 Cylinder 350 Cu. In. Engine, 270 HP:

Spark Plug: AC R44TS

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: 600 RPM

Automatic Transmission: 550 RPM in Drive

8 Cylinder 350 Cu. In. Engine, 330 HP:

Spark Plug: AC R43TS

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: 700 RPM

8 Cylinder 454 Cu. In. Engine, 365 HP:

Spark Plug: AC R43TS

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: 600 RPM

Automatic Transmission: 600 RPM in Drive

8 Cylinder 454 Cu. In. Engine, 425 HP, With Standard Transmission:

Spark Plug: AC R44TS

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: 700 RPM

8 Cylinder 454 Cu. In. Engine, 425 HP, With Automatic Transmission:

Spark Plug: AC R44TS

Spark Plug Gap .035"

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

Ignition Timing: 12 Degrees BTDC on Damper

Engine Idle Speed:

Automatic Transmission: 700 RPM in Drive

Valve Specifications:

8 Cylinder Engine, 350 Cu. In., 270 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., 330 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., 365 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: 1.88"

Valve Spring Pressure: 240 Lbs @ 1.38"

Valve Stem Clearance:

Intake .001"-.0027"

Exhaust .0012"-.0027"

Valve Stem Diameter:

Intake: .3715"-.3722"

Exhaust: .3713"-.3722"

8 Cylinder Engine, 454 Cu. In., 425 H.P.:

Operating (Tappet) Clearance, Hot:

Intake: .024"

Exhaust: .028"

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 .001"-.0027"

Valve Stem Diameter:

Intake: .3713"-.3720"

Exhaust: .3713"-.3720"

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

8 Cylinder Engine, 350 Cu. In., 270 H.P.:

Piston Clearance: .0007"-.0013"

Ring End Gap:

Compression: .010"

Oil: .015

Wrist Pin Diameter: .927"

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., 270 H.P.:

Piston Clearance: .0036"-.0042"

Ring End Gap:

Compression: .010"

Oil: .015

Wrist Pin Diameter: .927"

Rod Bearings:

Shaft Diameter: 2.099"-2.100"

Rod Bearing Clearance: .0013"-.0035"

Main Bearings:

Shaft Diameter:

Manual Transmission:

#1, 2, 3, & 4: 2.7481"-2.7490"

#5: 2.7473"-2.7483"

Automatic Transmission:

#1: 2.745"-2.7484"

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

#5: 2.7473"-2.7483"

Main Bearing Clearance:

Manual Transmission:

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

#5, .0023"-.0033"

Automatic Transmission:

#1: .0019"-.0031"

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

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: .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"

8 Cylinder Engine, 427 Cu. In., 425 H.P.:

Piston Clearance: .0040"-.0050"

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, 3, & 4: 2.7481"-2.7490"

#5: 2.7478"-2.7488"

Main Bearing Clearance:

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

#5: .0029"-.0045"

Thrust on Rear Bearing: #5

Crankshaft End Play: .006"-.010"

Capacities:

350 Cu. In. Engine, Except 270 H.P.:

Cooling System:

Without Heater: 14 Quarts

With Heater: 15 Quarts

With Air Conditioning: 15 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

Rear Axle: 4 Pints

350 Cu. In. Engine, 330 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:

Powerglide Automatic Transmission:

Refill: 3 Quarts

Total Capacity: 8-1/2 Quarts

Hydramatic 350 Automatic Transmission:

Refill: 2-1/2 Quarts

Total Capacity: 10 Quarts

Hydramatic 400 Automatic Transmission:

Refill: 4 Quarts

Total Capacity: 11 Quarts

Rear Axle: 4 Pints

454 Cu. In. Engine, 365 H.P:

Cooling System:

Without Heater: 21 Quarts

With Heater: 22 Quarts

With Air Conditioning; 22 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

Powerglide Automatic Transmission:

Refill: 3 Quarts

Total Capacity: 8-1/2 Quarts

Hydramatic 350 Automatic Transmission:

Refill: 2-1/2 Quarts

Total Capacity: 10 Quarts

Hydramatic 400 Automatic Transmission:

Refill: 4 Quarts

Total Capacity: 11 Quarts

Rear Axle: 4.0 Pints

454 Cu. In. Engine, 425 H.P., Manual Transmission:

Cooling System:

Without Heater: 19 Quarts

With Heater: 20 Quarts

With Air Conditioning; 20 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: 6 Quarts with New Filter

Transmission Oil

4 Speed Manual: 3 Pints

Rear Axle: 4.0 Pints

454 Cu. In. Engine, 425 H.P., Automatic Transmission:

Cooling System:

Without Heater: 21 Quarts

With Heater: 22 Quarts

With Air Conditioning; 22 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: 6 Quarts with New Filter

Transmission Oil

Powerglide Automatic Transmission:

Refill: 3 Quarts

Total Capacity: 8-1/2 Quarts

Hydramatic 350 Automatic Transmission:

Refill: 2-1/2 Quarts

Total Capacity: 10 Quarts

Hydramatic 400 Automatic Transmission:

Refill: 4 Quarts

Total Capacity: 11 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:

#1112038

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 530 RPM

Intermediate Advance: 1 Degree @ 670 RPM

Intermediate Advance: 8-1/2 Degrees @ 1,200 RPM

Full Advance: 12 Degrees @ 2,400 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 8"

Maximum Vacuum Advance: 7-1/2 Degrees @ 15" Vacuum

#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

#1112053

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 545 RPM

Intermediate Advance: 1 Degree @ 655 RPM

Intermediate Advance: 11 Degrees @ 1,200 RPM

Full Advance: 14 Degrees @ 2,750 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 7"

Maximum Vacuum Advance: 6 Degrees @ 12" Vacuum

#1112076

Centrifugal Advance Data:

Advance Starts: 0 Degrees @ 550 RPM

Intermediate Advance: 1-1/2 Degree @ 650 RPM

Intermediate Advance: 5.4 Degrees @ 795 RPM

Intermediate Advance: 12-1/2 Degrees @ 1,175 RPM

Full Advance: 16 Degrees @ 2,500 RPM

Vacuum Advance Data:

Inches of Vacuum to Start Plunger: 7"

Maximum Vacuum Advance: 6 Degrees @ 12" 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 #R4801-A

Pump Lever Clearance: .015"

Choke Setting: 1.320"

Choke Unloader Setting: .350""

Fast Idle:

Bench: .025"

On Car: 2,200 RPM

Choke Vacuum Break: .350"

Holley Model 4160

Carburetor #R4802-A

Pump Lever Clearance: .015"

Choke Setting: 1.320"

Choke Unloader Setting: .350""

Fast Idle:

Bench: .025"

On Car: 2,200 RPM

Choke Vacuum Break: .350"

Holley Model 4160

Carburetor #R4803-A

Pump Lever Clearance: .015"

Choke Setting: 1.320"

Choke Unloader Setting: .350""

Fast Idle:

Bench: .025"

On Car: 2,200 RPM

Choke Vacuum Break: .350"

Rochester Quadrajet

Carburetor #7041204

Float Level: 1/4"

Pump Rod:

Hole: Inner

Fast Idle, Bench Adjustment: 2 Turns

Choke Rod: .100"

Vacuum Break: .260"

Air Valve Dashpot: .020"

Choke Unloader: .450"

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

Rochester Quadrajet

Carburetor #7041205

Float Level: 1/4"

Pump Rod:

Hole: Inner

Fast Idle, Bench Adjustment: 2 Turns

Choke Rod: .100"

Vacuum Break: .275"

Air Valve Dashpot: .020"

Choke Unloader: .450"

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

Rochester Quadrajet

Carburetor #70412012

Float Level: 1/4"

Pump Rod:

Hole: Inner

Fast Idle, Bench Adjustment: 2 Turns

Choke Rod: .100"

Vacuum Break: .260"

Air Valve Dashpot: .020"

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

Rochester Quadrajet

Carburetor #7041213

Float Level: 1/4"

Pump Rod:

Hole: Inner

Fast Idle, Bench Adjustment: 2 Turns

Choke Rod: .100"

Vacuum Break: .275"

Air Valve Dashpot: .020"

Choke Unloader: .450"

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

VIN Numbers:

194671S100001 - 194671S121801

194371S100001 - 194371S121801

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; Custom Shoulder Belts; AM-FM Radio; AM-FM Stereo Radio; White Stripe Tires; Various Engine Options.

Paint Colors:

Code Color

905 Nevada Silver

912 Sunflower Yellow

972 Classic White

973 Mille Milga Red

976 Mulsage Blue

979 Bridgehampton Blue

983 Brands Hatch Green

987 Ontario Orange

988 Steel Cities Gray

989 War Bonnet Yellow

1971 Corvette Promotional Model Cars Available:

Plastic: Corvette Sting Ray Coupe

1971 Corvette Historical Data:

1971 Corvette model year introduction date was on September, 29, 1970.

Model Year Production: 21,801 Cars