1973 Corvette

1973 Corvette Performance & Specifications

Powertrain, Steering, Brakes, Dimensions, & Suspension

Almost from its start, 1973 was a year full of both great accomplishments and even greater controversies.  Technological feats, including the launch of Skylab and the Mariner Programs, the opening of the Sydney Opera House, and the start of the Alaska Pipeline all announced to the world that we were capable of reaching farther – of doing more.

Read More: 1973 Chevrolet Corvette Research Center

1973 Corvette Specifications

1973 Corvette Main Specs

MODEL: 1973 Chevrolet Corvette
BODY STYLE: Two-door convertible/coupe, front engine, rear wheel drive
MANUFACTURING LOCATION: 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):
1Z37J3S400001 – 1Z37J3S434464
ENGINE SUFFIX: CKZ: 350 CUBIC INCH, 190 HORSEPOWER, MANUAL
CLA: 350 CUBIC INCH, 190 HORSEPOWER, AUTOMATIC
CLB: 350 CUBIC INCH, 190 HORSEPOWER, MANUAL, CALIFORNIA EMISSIONS
CLC: 350 CUBIC INCH, 190 HORSEPOWER, AUTOMATIC, CALIFORNIA EMISSIONS
CLD: 350 CUBIC INCH, 250 HORSEPOWER, AUTOMATIC
CLH: 350 CUBIC INCH, 250 HORSEPOWER, AUTOMATIC, CALIFORNIA EMISSIONS
CLR: 350 CUBIC INCH, 250 HORSEPOWER, MANUAL
CLS: 350 CUBIC INCH, 250 HORSEPOWER, MANUAL, CALIFORNIA EMISSIONS
CWM: 454 CUBIC INCH, 275 HORSEPOWER, MANUAL
CWR: 454 CUBIC INCH, 275 HORSEPOWER, AUTOMATIC
CWS: 454 CUBIC INCH, 275 HORSEPOWER, AUTOMATIC, CALIFORNIA EMISSIONS
CWT: 454 CUBIC INCH, 275 HORSEPOWER, MANUAL, CALIFORNIA EMISSIONS
ENGINE BLOCK NUMBER: 3970010: 350 CUBIC INCH, 190 HP, 250HP
3970014: 350 CUBIC INCH, 190 HP, 250HP
3999289: 454 CUBIC INCH, 275HP
HEAD NUMBER: 353049: 454 CUBIC INCH, 275HP
330545: 350 CUBIC INCH, 250HP
3998993: 350 CUBIC INCH, 190HP
333881: 350 CUBIC INCH, 190HP
333882: 350 CUBIC INCH, 190HP
CARBURETOR NUMBERS: ROCHESTER Q-jet #7043200: 454 CUBIC INCH, 275HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7043201: 454 CUBIC INCH, 275HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7043202: 350 CUBIC INCH, 190HP, AUTOMATIC TRANSMISSION
ROCHESTER Q-jet #7043203: 350 CUBIC INCH, 190HP, MANUAL TRANSMISSION
ROCHESTER Q-jet #7043212: 350 CUBIC INCH, 250HP, AUTOMATIC
DISTRIBUTOR NUMBER: 1112098: 350 CUBIC INCH, 190HP
1112114: 454 CUBIC INCH, 275HP
1112130: 350 CUBIC INCH, 250HP
1112150: 350 CUBIC INCH, 250HP
ALTERNATOR NUMBER: 1100544: 350, 454 CUBIC INCH, AIR CONDITIOING
1100950: 350, 454 CUBIC INCH
1102353: 454 CUBIC INCH
AXLE IDENTIFICATION NUMBER AA: 3.55:1 RATIO
AB: 3.70:1 RATIO
AC: 4.11:1 RATIO
AW: 3.08:1 RATIO
AX: 3.36:1 RATIO
LR: 3.36:1 RATIO
PRODUCTION ENDING VEHICLE: AUG., 1972: 401138, DEC., 1972: 410679, APR., 1973: 421933, SEP.. 1972: 403539, JAN., 1973: 413600, MAY, 1973: 428892, OCT., 1972: 406054, FEB., 1973: 416301, JUNE., 1973: 431731, NOV., 1972: 408696, MAR., 1973: 419253, JULY, 1973: 434464

1973 Corvette Powertrain Specifications

Order Code Standard L82 LS4
Manufacturing Location Flint, Michigan Flint, Michigan Flint, Michigan
Type 90 degree V, Valve-In-Head 90 degree V, Valve-In-Head 90 degree V, Valve-In-Head
Cylinders 8 8 8
Displacement (cid) 350 350 454
Fuel Induction System 4-Barrel Carburetor 4-Barrel Carburetor 4-Barrel Carburetor
Horsepower 180 @ 4,000 210 @ 5,200 275 @ 4,400
Torque 270 @ 2,800 255 @ 3,600 395 @ 2,800
Bore x Stroke (in.) 4.00 x 3.48 4.00 x 3.48 4.251 x 4.00
Compression Ratio 8.5:1 9.0:1 8.25:1
Valve Lifters Hydraulic Mechanical Hydraulic
Firing Order 1-8-4-3-6-5-7-2 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 1-3-5-7
Cylinder Number System (Right) 2-4-6-8 2-4-6-8 2-4-6-8
Recommended Fuel Premium Premium Premium

1973 Corvette Manual Transmission/Gear Ratios

Manual Transmission

Gear Ratios 
4-Speed (RPO M20)
4-Speed Close Ratio (RPO M21)
1st Gear:
2.52:1
2.20:1
2nd Gear:
1.88:1
1.64:1
3rd Gear:
1.46:1
1.27:1
4th Gear:
1.00:1
1.00:1
Reverse:
2.59:1
2.26:1

Clutch

Clutch Stats
Type Single Dry Disk Centrifugal (Dual Dry Disk for LT1)
Spring Pressure (lbs) 2450 – 2750 (2900 – 3100 for LT1)
Lining area (sq. in.) 123.7 (207.06 for LT1)

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

1973 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 Coil
Material Steel Alloy
Size 10.27 x 3.80; 130.84 x 0.606
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 Variable rate 9-leaf
Material Chrome carbon steel
Length, width, height 48.60 x 2.25 x 2.121
Rear Strut
Material Forged Steel
Diameter 0.75

Brakes

Brake Specs
Type:
– Standard Caliper Disk – 4 Wheel Hydraulic
– J50 Delco Moraine, vacuum power unit; integral
Drum diameter, front (in.): 11.75 x 1.25
Drum diameter, rear (in.): 11.75 x 1.25
Swept Drum Area Effective area: 639.4

Wheels & Tires

Wheels & Tires Specs
Wheel Type:
– Standard Short spoke spider, welded steel
Wheels, size:
– Standard 15″ x 8.00
Tire, size:
– Standard GR70 x 15 — Blackwall Steel Belted Radial
– QRM GR70 x 15 — White Stripe Steel Belted Radial
– QRZ GR70 x 15 — White Letter Steel Belted Radial
Inflation (cold)
– Front 24 psi (cold), 30 psi (hot)
– Rear 24 psi (cold), 30 psi (hot)

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

1973 Corvette


1973 Corvette Exterior Dimensions

Hard Top Dimensions

1973 Corvette Dimensions - Hard Top

Exterior Dimensions (Hardtop) Interior Dimensions (Hardtop)
Wheelbase: 98.0 Inches Headroom: 37.1 Inches
Overall Length: 184.7 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

1973 Corvette Dimensions - Soft Top

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 4.5 Inches

Coupe Dimensions

1973 Corvette Dimensions - Coupe

Exterior Dimensions (Coupe) Interior Dimensions (Coupe)
Wheelbase: 98.0 Inches Headroom: 37.2 Inches
Overall Length: 182.5 Inches Shoulder Room: 46.9 Inches
Total Body Width: 69.0 Inches Hip Room: 48.8 Inches
Overall Height: 47.8 Inches Leg Room: 43.0 Inches
Front Track Width: 58.7 Inches
Rear Track Width: 59.4 Inches
Min. Ground Clearance 4.8 Inches

Capacities

Capacities
Passenger Capacity 2 – Driver & Passenger
Curb Weight (lbs) 3,306
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 454ci. engine
Battery: 12 Volt, 62AH for 350ci. engines
12 Volt, 80AH for 454ci. engines

1973 Corvette

1973 Corvette Performance Results

4-Speed Transmission
Standard
LT1 LS5
Performance weight (lbs.)
3605 3630 3827
Pounds/gross horsepower
18.02 14.23 14.17
Pounds/cu.in. piston displacement
10.30 10.37 8.43
Gross horsepower/cu.in. displacement
.571 .728 .771
Power displacement (cu.ft./mile)
255.55 270.00 303.86
Displacement factor (cu.ft./mile)
141.97 148.35 159.09
0 – 60 mph (seconds)
8.5
Top Speed (mph)
Quarter Mile (secs @ mph)
15.2 @ 83 14.7 @ 93

1973 Corvette