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1973 Chevrolet Corvette C3
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1973 Corvette Specs

Body Specs

Wheelbase 98.0 inches
Overhand (Front) 42.8 inches
Overhang (Rear) 43.9 inches
Front Track 58.7 inches
Rear Track 59.5 inches
Length 184.7 inches
Ground Clearance 4.3 inches
(Exhaust Pipe at X-Member)
Overall Height 47.7 inches (Coupe)
47.8 inches (Convertible, Hard and Soft Top)
Rocker Panel to Ground (Front) 7.8 inches
Rocker Panel to Ground (Rear) 7.5 inches
Luggage Capacity 6.1 Cubic Feet (Coupe)
5.0 Cubic Feet (Convertible)
Cowl Height 36.3 inches
Windshield Slope Angle 57°
Head Room 37.1 inches (Coupe)
36.2 inches (Convertible, Soft Top)
36.1 inches (Convertible, Hard Top)
Shoulder Room 47.9 inches
Hip Room 48.8 inches
Tire Size GR70-15B
Recommended Tire Inflation 20 PSI Cold (Front, Rear)
Wheels, Regular Production Size: 15 x 8.00
Synchronization All Forward Gears
Turbo Hydra-Matic (Automatic) Transmission 1st Gear 2.48:1
2nd Gear 1.48:1
3rd Gear 1.00:1
Reverse Gear 2.08:1
Lubricant Capacity 3 Quarts
Four Speed M20 Transmission 1st Gear 2.52:1
2nd Gear 1.88:1
3rd Gear 1.46:1
4th Gear 1.00:1
Reverse Gear 2.59:1
Close Ratio Four Speed
M21 Transmission
1st Gear 2.20:1
2nd Gear 1.64:1
3rd Gear 1.27:1
4th Gear 1.00:1
Reverse Gear 2.26:1
Transmission Lubricant Type Military MIL-L-2105-B
SAE 80
Lubricant Capacity Four Speed Manual: 2.5 Quarts
Differential Lubricant Type Military MIL-L-2105-B
SAE 80
Differential Lubricant Capacity 3.7 pints
Axle Ratio 190 Horsepower Base Engine
3.08:1, 3.36:1
250 Horsepower L82 Engine
3.55:1, 3.70:1
275 Horsepower 454 Cubic Inch LS4 Engine
3.08:1, 3.36:1 (3.55:1 with M21 Transmission)
Transmission Synchromesh All Four Gears
Standard Fuel Tank Capacity 18 Gallons (approximately)
Steering Wheel Diameter
(Power, Manual Steering)
15.0 inches
Steering Ratio 16.0:1
Turning Diameters 37.0 feet (Curb to Curb)
38.6 feet (Wall to Wall)


Weight

Model 19467 Convertible
(Curb)    Front: 1,668 lb.
Rear: 1,746 lb.
Total: 3,414 lb.

(Shipping)    Total: 3,333 lb.
Model 19437 Sport Coupe
(Curb)    Front: 1,677 lb.
Rear: 1,730 lb.
Total: 3,407 lb.

(Shipping)    Total: 3,326 lb.
Shipping Weight: Weight of basic vehicle with regular equipment, including grease, oil, engine coolant to capacity and (3) gallons of gasoline.

Weight Differentials
Auxiliary Top (RPO C07) +54 lb.
(+8 lb. Front; +46 lb. Rear)
Air Conditioning (RPO C60) +95 lb. (With Standard Engine, Manual Transmission)
(+76 lb. Front; +19 lb. Rear)
+80 lb. (With Standard Engine & Automatic Transmission)
(+64 lb. Front; +16 lb. Rear)
+90 lb. (With 454 Cubic Inch Engine)
(+72 lb. Front; +18 lb. Rear)
Power Windows (RPO A31) +7 lb.
(+4 lb. Front; +3 lb. Rear)
Power Brakes (RPO J50) +10 lb.
(+9 lb. Front; +1 lb. Rear)
Standard 350 cubic inch Engine
190 Horsepower
With Turbo Hydra Matic Transmission
+54 lb.
(+37 lb. Front; +17 lb. Rear)
350 cubic inch L82 Engine +42 lb.
(+36 lb. Front; +6 lb. Rear)
454 cubic inch LS4 Engine +211 lb.
(+188 lb. Front; +23 lb. Rear)
Power Steering (RPO N40) +26 lb.
(+25 lb. Front; +1 lb. Rear)
With Standard, L82 Engines
+28 lb.
(+27 lb. Front; +1 lb. Rear)
With LS4 Engine
Radio, AM/FM Stereophonic
(RPO U58)
+18 lb.
(+9 lb. Front; +9 lb. Rear)
Radio, AM/FM Pushbutton
(RPO U69)
+14 lb.
(+7 lb. Front; +7 lb. Rear)


Engine Specs

Type: V8
Valve Location: In Head
Bore / Stroke: 4.00" / 3.48" (Standard, L82 350 Cubic Inch)
4.251" / 4.00" (LS4 454 Cubic Inch)
Displacement: Standard, L82 Engines: 350 Cubic Inches
LS4 Engine: 454 Cubic Inches
Compression Ratio: 8.5:1 (Standard Engine)
9.0:1 (L82 Engine)
8.25:1 (LS4 Engine)
Rocker Arms Stamping, Steel
Crankshaft Material: Forged Steel
Camshaft Material: Cast Alloy Iron
Oil Pump Type: Gear
Normal Oil Pressure 30 - 45 psi @ 1,500 RPM
50 - 75 psi @ 2,000 RPM
Oil Pressure Gauge Mechanical
Crankcase Oil Capacity, Standard, L82 Engines 4 Quarts, Less Filter
Crankcase Oil Capacity, LS4 Engine 5 Quarts, Less Filter
Recommended Oil Grade Above 20°F: SAE 20W, SAE 10W-30, 10W-40,
20W-40
0°F to 60°F: SAE 10W, 5W-30, 10W-40
Below 20°F: SAE 5W, 5W-20, 5W-30
Fuel Filter Strainer
Fuel Pump Mechanical
Fuel Pressure 5¼ - 6½ PSI
Cooling System Capacity 350 cubic inch Standard, L82 Engines
19 Quarts (with heater)
18 Quarts (without heater)
454 cubic inch LS4 Engine
24 Quarts (with heater)
23 Quarts (without heater)
Thermostat Type Choke
Radiator Cap Relief Pressure 15 +/- 1 PSI
Battery 12 volt - 78 plate
62 Amp hr. @ 20 hr.
Thermostat Opening 192° - 198°F (Base, LS4 Engines)
177° - 183°F (L82 Engine)

Brakes
Type Caliper Disc, Four Wheel Hydraulic
Effective Area 78.1 Square Inches
Swept Area 461.2 Square Inches
Disc Vented
Pistons per Caliper Four

Horsepower
Standard Engine (350 cubic inch) 190 hp @ 4,400 RPM;
Torque: 270 lb-ft @ 2,800 RPM
RPO L82 (350 cubic inch) 250 hp @ 5,200 RPM;
Torque: 285 lb-ft. @ 4,000 RPM
RPO LS4 (454 cubic inch) 275 hp @ 4,400 RPM;
Torque: 395 lb-ft @ 2,800 RPM

Ignition System
Coil Delco-Remy Base, L82 Engine: 1115270;
LS4: 1115287
Coil current rating 4 amps (engine stopped)
1.8 amps (engine running)
Breaker Gap .019"
Ignition Timing Centrifugal Advance Distributor | 1112098 | Base Engine
Start: 1,200 RPM
Max: 14° @ 4,200 RPM
Distributor | 1112150 | L82 Engine
Start: 1,200 RPM
Intermediate: 16° @ 2,200 RPM
Max: 24° @ 5,000 RPM
Distributor | 1112114 | LS4 Engine
Start: 1,100 RPM
Intermediate: 11° @ 2,400 RPM
Max: 18° @ 4,200 RPM
Ignition Timing Vacuum Advance Distributor | 1112098 | Base Engine
Start: 6°
Maximum: 15° @ 13.5 inches Hg
Distributor | 1112150 | L82 Engine
Start: 8°
Maximum: 15° @ 15.5 inches Hg
Distributor | 1112114 | LS4 Engine
Start: 8°
Maximum: 20° @ 17 inches Hg
Timing Base Engine: 12° BTC @ 900 RPM (Manual)
12° BTC @ 600 RPM (Automatic)
L82 Engine: 8° BTC @ 900 RPM (Manual)
8° BTC @ 700 RPM (Automatic)
LS4 Engine: 10° BTC @ 900 RPM (Manual)
10° BTC @ 600 RPM (Automatic)
Spark Plug AC R44T (350, 454 Cubic Inch Engines)
Spark Plug Thread 14 mm.
Spark Plug Torque 15 lb.-ft.
Spark Plug Gap .033 - .038 inch
Firing Order 1-8-4-3-6-5-7-2
Idle Manual Transmission Engines: 900 RPM
Base, LS4 Engines Automatic: 600 RPM
L82 Engine Automatic: 700 RPM

1973 Corvette Options

RPO Description Production Price
Custom Interior Trim 13,434 (44.10%) $154.00
Optional Rear Axle Ratio 1,791 (5.88%) $12.00
A31 Power Windows 14,024 (46.03%) $83.00
A85 Custom Shoulder Belts (standard with coupe) 788 (2.59%) $41.00
C07 Auxiliary Hardtop (for convertible) 1,328 (4.36%) $267.00
C08 Vinyl Covering (for auxiliary hardtop) 323 (1.06%) $62.00
C50 Rear Window Defroster 4,412 (14.48%) $41.00
C60 Air Conditioning 21,578 (70.83%) $452.00
J50 Power Brakes 24,168 (79.33%) $46.00
L82 350 cu. in. 250hp Engine 5,710 (18.74%) $299.00
LS4 454 cu. in. 275hp Engine 4,412 (14.48%) $250.00
M21 4-Speed Manual Transmission, close ratio 3,704 (12.16%) n/a
M40 Turbo Hydra-Matic Automatic Transmission 17,927 (58.85%) n/a
N37 Tilt-Telescopic Steering Column 17,949 (58.92%) $82.00
N40 Power Steering 27,872 (91.49%) $113.00
P02 Deluxe Wheel Covers 1,739 (5.71%) $62.00
QRM White Stripe Steel Belted Tires, GR70x15 19,903 (65.33%) $32.00
QRZ White Letter Steel Belted Tires, GR70x15 4,541 (14.91%) $45.00
T60 Heavy Duty Battery (standard with LS4) 4,912 (16.12%) $15.00
U58 AM-FM Radio, stereo 12,482 (40.97%) $276.00
U69 AM-FM Radio 17,598 (57.77%) $173.00
UF1 Map Light (on rearview mirror) 8,186 (26.87%) $5.00
YF5 California Emission Test 3,008 (9.87%) $15.00
YJ8 Cast Aluminum Wheels (5) 4 (0.01%) $175.00
Z07 Off Road Suspension and Brake Package 45 (0.15%) $369.00

Total Production: 30,464
Coupe: 25,521 (83.77%)
Convertible: 4,943 (16.23%)

Notes: Base Corvette Coupe with 350 cu. in. 190 hp engine and wide ratio four speed manual transmission: $5,561.50.
Base Corvette Convertible with 350 cu. in. 190 hp engine and wide ratio four speed manual transmission: $5,398.00.

Colors

Code Exterior Quantity Interior Soft Top Wheels
910 Classic White n/a Black / Dark Red / Dark Saddle / Midnight Blue / Medium Saddle Black / White Silver
914 Silver n/a Black / Dark Red / Dark Saddle / Midnight Blue / Medium Saddle Black / White Silver
922 Medium Blue n/a Black / Midnight Blue / M Black / White Silver
927 Dark Blue n/a Black / Dark Red / Midnight Blue / Medium Saddle Black / White Silver
945 Blue-Green n/a Black / Dark Red / Dark Saddle / Medium Saddle Black / White Silver
947 Elkhart Green n/a Black / Medium Saddle Black / White Silver
952 Yellow n/a Black / Dark Saddle / Midnight Blue Black / White Silver
953 Metallic Yellow n/a Black / Midnight Blue Black / White Silver
976 Mille Miglia Red n/a Black / Dark Red / Dark Saddle / Midnight Blue / Medium Saddle Black / White Silver
980 Orange n/a Black / Medium Saddle / Midnight Blue / Dark Saddle Black / White Silver


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