It was decided by Chevrolet management that they should treat the 1971 model year as an extension of the 1970 line, which meant that the Corvette – for better or worse – would remain essentially unaltered between the two model years.
Read More: 1971 Chevrolet Corvette Research Center
1971 Corvette Specifications
1971 Corvette Main Specs
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MODEL:
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1971 Chevrolet Corvette
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BODY STYLE:
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Two-door convertible/coupe, front engine, rear wheel drive |
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MANUFACTURING LOCATION:
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St. Louis, Missouri |
| CONSTRUCTION: | Uniconstruction: fiberglass reinforced plastic (FRP or “fiberglass”) body, backboned by a steel cage outlining the passenger compartment. Principal members – underbody, front and rear end assemblies, dash panel and hinge pillars are bonded, riveted, or bolted together and to each other. Hood is plastic with bonded plastic reinforcement. Coupe: two removable roof panels and removable rear window. Frame: all welded, full length, ladder construction with 5 crossmembers. Side Rails and intermediate crossmembers box section; front crossmember box girder section. Eight body-mounting points. |
| VEHICLE NUMBERS (VIN): | 194371S100001 – 194371S121801 |
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ENGINE SUFFIX:
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CGT: 350 CUBIC INCH, 270 HP, AUTOMATIC TRANS
CGY: 350 CUBIC INCH, 330 HP, MANUAL TRANS
CGZ: 350 CUBIC INCH, 330 HP, MANUAL TRANS
CJK: 350 CUBIC INCH, 270 HP, AUTOMATIC TRANS
CJL: 350 CUBIC INCH, 270 HP, MANUAL TRANS
CPH: 454 CUBIC INCH, 365 HP, MANUAL TRANS
CPJ: 454 CUBIC INCH, 365 HP, AUTOMATIC TRANS
CPW: 454 CUBIC INCH, 425 HP, MANUAL TRANS, ALUMINUM HEADS
CPX: 350 CUBIC INCH, 425 HP, AUTOMATIC TRANS, ALUMINUM HEADS
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ENGINE BLOCK NUMBER:
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3970010, 350 CUBIC INCH, 270 HP, 330HP
3963512, 454 CUBIC INCH, 365 HP, 425HP
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HEAD NUMBER:
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3946074, 454 CUBIC INCH, 425HP
3973487, 350 CUBIC INCH, 270HP, 330HP
3993820, 454 CUBIC INCH, 365HP
3994026, 454 CUBIC INCH, 425HP
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CARBURETOR NUMBER:
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OCHESTER Q-jet #7041204: 454 CUBIC INCH, 365HP, AUTOTRANS
ROCHESTER Q-jet #7041205: 454 CUBIC INCH, 365HP, MANUAL TRANS
ROCHESTER Q-jet #7041212: 350 CUBIC INCH, 270HP, AUTO TRANS
ROCHESTER Q-jet #7041213: 350 CUBIC INCH, 270HP, MANUAL TRANS
HOLLEY R4489A #3989021: 350 CUBIC INCH, 330HP, MANUAL TRANS
HOLLEY R4555A #3986195: 454 CUBIC INCH, 425HP, MANUAL TRANS
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DISTRIBUTOR NUMBER:
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1112038: 350 CUBIC INCH, 330HP, TRANSISITOR IGNITION
1112050: 350 CUBIC INCH, 270HP
1112051: 454 CUBIC INCH, 365HP,
1112053: 454 CUBIC INCH, 425HP, TRANSISTOR IGNITION
1112076: 454 CUBIC INCH, 425HP, TRANSISTOR IGNITION
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| ALTERNATOR: |
1100543: 454 CUBIC INCH, 365HP, 425HP
1100950: 350 CUBIC INCH 270HP, 330HP
1100544: ALL WITH AIR CONDITIONING
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AXLE IDENTIFICATION:
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AA: 3.55:1 RATIO
AB: 3.70:1 RATIO
AC: 4.11:1 RATIO
AD: 4.56:1 RATIO
AW: 3.08:1 RATIO
AX: 3.36:1 RATIO
LR: 3.36:1 RATIO
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PRODUCTION CUTOFF NUMBERS (ENDING VEHICLE):
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AUG., 1970: 101212, JAN. 1971: 108230, MAY, 1971: 118223, SEP.. 1970: 102226, FEB. 1971: 110886, JUN., 1971: 120686, NOV., 1970: 102675, MAR. 1971: 113626, JULY, 1971: 121801, DEC., 1970: 105269, APR. 1971: 115983 |
1971 Corvette Powertrain Specifications
| Order Code | Standard | LT1 |
| Manufacturing Location | Flint, Michigan | Flint, Michigan |
| Type | 90 degree V, Valve-In-Head | 90 degree V, Valve-In-Head |
| Cylinders | 8 | 8 |
| Displacement (cid) | 350 | 350 |
| Fuel Induction System | 4-Barrel Carburetor | 4-Barrel Carburetor |
| Horsepower | 270 @ 4,800 | 330 @ 5,600 |
| Torque | 360 @ 3,200 | 360 @ 4,000 |
| Bore x Stroke (in.) | 4.00 x 3.48 | 4.00 x 3.48 |
| Compression Ratio | 8.5:1 | 9.0:1 |
| Firing Order | 1-8-4-3-6-5-7-2 | 1-8-4-3-6-5-7-2 |
| Cylinder Number System (Left) | 1-3-5-7 | 1-3-5-7 |
| Cylinder Number System (Right) | 2-4-6-8 | 2-4-6-8 |
| Recommended Fuel | Premium | Premium |
| Order Code | LS5 | LS6 |
| Manufacturing Location | Flint, Michigan | Flint, Michigan |
| Type | 90 degree V, Valve-In-Head | 90 degree V, Valve-In-Head |
| Cylinders | 8 | 8 |
| Displacement (cid) | 454 | 454 |
| Fuel Induction System | 4-Barrel Carburetor | 4-Barrel Carburetor |
| Horsepower | 365 @ 4,800 | 425 @ 5,600 |
| Torque | 500 @ 3,400 | 475 @ 4,000 |
| Bore x Stroke (in.) | 4.251 x 4.00 | 4.251 x 4.00 |
| Compression Ratio | 10.25:1 | 11.25:1 |
| Firing Order | 1-8-4-3-6-5-7-2 | 1-8-4-3-6-5-7-2 |
| Cylinder Number System (Left) | 1-3-5-7 | 1-3-5-7 |
| Cylinder Number System (Right) | 2-4-6-8 | 2-4-6-8 |
| Recommended Fuel | Premium | Premium |
1971 Corvette Manual Transmission/Gear Ratios
Manual Transmission
| Gear Ratios |
4-Speed (RPO M20)
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4-Speed Close Ratio (RPO M21)
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4-Speed Heavy Duty (RPO M22)
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1st Gear:
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2.52:1
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2.20:1
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2.20:1 |
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2nd Gear:
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1.88:1
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1.64:1
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1.64:1 |
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3rd Gear:
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1.46:1
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1.27:1
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1.27:1 |
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4th Gear:
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1.00:1
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1.00:1
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1.00:1 |
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Reverse:
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2.59:1
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2.26:1
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2.26:1 |
Clutch
| Clutch | Stats |
| Type | Single Dry Disk Centrifugal |
| Spring Pressure (lbs) | 2450 – 2750 (2900 – 3100 Heavy Duty) |
| Lining area (sq. in.) | 123.7 (103.53 Heavy Duty) |
Turbo Hydra-Matic Automatic Transmission RPO M40/ Gear Ratios
| Gear | Drive | L2 | L1 | Reverse |
| 1st Gear | 2.48:1 | 2.48:1 | 2.48:1 | N/A |
| 2nd Gear | 1.48:1 | 1.48:1 | N/A | N/A |
| 3rd Gear | 1.00:1 | N/A | N/A | N/A |
| Reverse | N/A | N/A | N/A | 2.08 |
1971 Corvette Wheels, Suspension & Brakes
Suspension – Front
Type and Description: Independent, SLA type, coil springs with center mounted shock absorbers, spherical joint steering knuckle pivots.
| Front Coil Springs | |
| Make & Type | Right-hand Helix Variable rate |
| Material | Steel Alloy |
| Part Number | 3931823, 3931825 |
| Spring Rate (lb. per in.) | 250 (284) |
| Rate at Wheel (lb. per in.) | – |
| Design Load at Spring | 9.99 in. @ 1395 lbs. (9.99 in. @ 1540 lbs. |
| Front Stabilizer Bar | |
| Type | Link |
| Material | Hot rolled steel |
| Diameter | .750 with 350ci engine, .9375 with 454ci engine |
Suspension – Back
Type and Description: Full Independent rear suspension with frame-anchored differential unit. Position of each wheel established by three links: tubular axle drive shafts, transverse strut rods, torque control arms. Vertical suspension loads taken by transverse leaf springs. Built-in camber adjustment at strut rod inner ends.
| Rear Leaf Springs | |
| Number of Leaves | 9 |
| Material | Chrome carbon steel |
| Length, width, height | 46.36 x 2.25 x 2.121 |
| Rear Shock Absorbers: | |
| Type | Direct, double-acting, hydraulic |
| Piston Diameter | 1.00 |
| Rear Strut | |
| Material | Forged Steel |
| Diameter | 0.75 |
Brakes
| Brake Specs | |
| Type: | – |
| – Standard | Caliper Disk – 4 Wheel Hydraulic |
| – J50 | Delco-Moraine Vacuum Assisted Powered Brakes |
| Drum diameter, front (in.): | 11.75 x 1.25 |
| Drum diameter, rear (in.): | 11.75 x 1.25 |
| Swept Drum Area Effective area: | 461.2 |
Wheels & Tires
| Wheels & Tires Specs | |
| Wheel Type: | |
| – Standard | Short spoke spider, welded steel |
| Wheels, size: | |
| – Standard | 15″ x 8.00 |
| Tire, size: | |
| – Standard | F70 x 15 — 4 PR. 2-Ply Tubeless Nylon |
| – PT6 | F70 x 15 — 4 PR, 2-Ply Red Stripe Nylon |
| – PT7 | F70 x 15 — 4 PR, 2-Ply White Stripe Nylon |
| Inflation (cold) | |
| – Front | 24 lbs. |
| – Rear | 24 lbs. |
Steering
| Steering Specs – Manual Steering | |
| Type | Semi-reversible gear with ball-nut driven by recirculating anti-friction bearings, energy-absorbing steering column, steering damper attached to relay rod; two position steering knuckle arm attachment for street and fast ratio steering. Adjustable steering column available optionally. |
| Make | Saginaw |
| Ratio (Street) | 20.2:1 |
| Ratio (Fast) | 17.6:1 |
| Wheel Diameter (in.) | 16 |
| Turns, Stop to Stop | |
| – Street | 3.4 |
| – Fast | 2.92 |
| Turning Diameter | 37 ft. (outside front), 39 ft. (outside front) |
| Steering Specs – Power Steering RPO N40 | |
| Type | (Specifications are the same as Manual Steering except the following): |
| Description | Hydraulic; pump powered cylinder assisted linkage |
| Gear Ratio | 16:1 |
| Overall Ratio | 17.6:1 |
| Wheel Turns (Lock to Lock) | 2.92 |
1971 Corvette Exterior Dimensions
Hard Top Dimensions
| Exterior Dimensions (Hardtop) | Interior Dimensions (Hardtop) | ||
| Wheelbase: | 98.0 Inches | Headroom: | 37.1 Inches |
| Overall Length: | 182.1 Inches | Shoulder Room: | 46.9 Inches |
| Total Body Width: | 69.2 Inches | Hip Room: | 48.8 Inches |
| Overall Height: | 47.9 Inches | Leg Room: | 43.0 Inches |
| Front Track Width: | 58.3 Inches | ||
| Rear Track Width: | 59.0 Inches | ||
| Min. Ground Clearance | 4.9 Inches | ||
Soft Top Dimensions
| Exterior Dimensions (Soft Top) | Interior Dimensions (Soft Top) | ||
| Wheelbase: | 98.0 Inches | Headroom: | 38.3 Inches |
| Overall Length: | 182.5 Inches | Shoulder Room: | 46.9 Inches |
| Total Body Width: | 69.0 Inches | Hip Room: | 48.8 Inches |
| Overall Height: | 47.9 Inches | Leg Room: | 43.0 Inches |
| Front Track Width: | 58.7 Inches | ||
| Rear Track Width: | 59.4 Inches | ||
| Min. Ground Clearance | 4.9 Inches | ||
Coupe Dimensions
| Exterior Dimensions (Coupe) | Interior Dimensions (Coupe) | ||
| Wheelbase: | 98.0 Inches | Headroom: | 37.2 Inches |
| Overall Length: | 182.1 Inches | Shoulder Room: | 46.9 Inches |
| Total Body Width: | 69.0 Inches | Hip Room: | 48.8 Inches |
| Overall Height: | 47.8 Inches | Leg Room: | 43.0 Inches |
| Front Track Width: | 58.7 Inches | ||
| Rear Track Width: | 59.4 Inches | ||
| Min. Ground Clearance | 4.9 Inches | ||
Capacities
| Capacities | |
| Passenger Capacity | 2 – Driver & Passenger |
| Curb Weight (lbs) | 3,304 |
| – Convertible with soft top | – |
| – Convertible; C07 with folding top | – |
| – Convertible; C07 less folding top Coupe |
3,290 |
| Interior Passenger Volume (cu. ft) | – |
| Interior Trunk Volume (cu. ft) | 20 |
| Fuel Capacity (gallons): | 4.0 for 350ci. engines (capacity of crankcase less filter – refill) 5.0 for 454ci engines (capacity of crankcase less filter – refill) |
| Coolant capacity without heater (qts.) | 18 for RPO LT1 engine 22 for LS5 engine |
| Battery: | 12 Volt, 62AH for 350ci. engines 12 Volt, 80AH for 454ci. engines |
1971 Corvette Performance Results
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4-Speed Transmission
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Standard |
LT1
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LS5
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LS6
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Performance weight (lbs.)
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3592
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3654
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3812
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N/A |
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Pounds/gross horsepower
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13.30
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11.07
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10.44 |
N/A
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Pounds/cu.in. piston displacement
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10.26
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10.44 | 8.44 |
N/A
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Gross horsepower/cu.in. displacement
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.771
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.943 |
.804
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N/A
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Power displacement (cu.ft./mile)
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261.33
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276.11
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310.73 |
N/A
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Displacement factor (cu.ft./mile)
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145.18
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150.88
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162.68
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N/A
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0 – 60 mph (seconds)
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6.0 (1)
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N/A
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Top Speed (mph)
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137 (1)
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N/A
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4-Speed Transmission
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Performance weight (lbs.)
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N/A
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3654
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3812
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3674 |
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Pounds/gross horsepower
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N/A
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11.07 | 10.44 | 8.64 |
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Pounds/cu.in. piston displacement
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N/A
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10.44 | 8.40 |
8.09
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Gross horsepower/cu.in. displacement
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N/A
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.943
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.804
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.956
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Power displacement (cu.ft./mile)
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N/A
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287.78
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338.99
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338.99
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Displacement factor (cu.ft./mile)
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N/A
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287.78
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177.48
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167.06
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0 – 60 mph (seconds)
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N/A
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5.3 (1)
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Top Speed (mph)
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N/A
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152 (1)
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4-Speed Transmission
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Performance weight (lbs.)
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3680 |
N/A
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3860
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3724
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Pounds/gross horsepower
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13.63 |
N/A
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10.57
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8.76 |
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Pounds/cu.in. piston displacement
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10.51 |
N/A
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8.50 | 8.20 |
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Gross horsepower/cu.in. displacement
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.771 |
N/A
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.804
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.956
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Power displacement (cu.ft./mile)
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239.55
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N/A
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310.73 |
310.73
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Displacement factor (cu.ft./mile)
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130.19 |
N/A
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161.00
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184.23
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0 – 60 mph (seconds)
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7.1 (1)
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N/A
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5.7 (1)
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Top Speed (mph)
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132 (1)
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N/A
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141 (1)
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