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1978 Chevrolet Corvette C3 Pace Car Edition
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1978 Corvette Specs

Body Specs

Wheelbase 98.0 inches
Overhand (Front) 42.4 inches
Overhang (Rear) 44.8 inches
Front Track 58.7 inches
Rear Track 59.5 inches
Length 185.2 inches
Front Fender Overall Width 69.0 inches
Rear Fender Overall Width 68.8 inches
Ground Clearance
Differential to Ground
5.7 inches
Ground Clearance
Front Bumper to Ground
10.8 inches
Ground Clearance
Rear Bumper to Ground
11.8 inches
Minimum Running Clearance 4.3 inches
(Measured at Catalytic Converter)
Overall Height 48.0 inches
Rocker Panel to Ground (Front) 8.0 inches
Rocker Panel to Ground (Rear) 7.6 inches
Luggage Capacity 8.4 Cubic Feet
Cowl Height 36.4 inches
Windshield Slope Angle 57.0°
Effective Head Room 36.2 inches
Shoulder Room 47.5 inches
Hip Room 49.9 inches
Tire Size P225/70R15
Recommended Tire Inflation 28 PSI Front; 32 PSI Rear
Wheels, Regular Production Size: 15 x 8
Synchronization All Forward Gears
Turbo Hydra-Matic (Automatic) Transmission 1st Gear 2.52:1
2nd Gear 1.52:1
3rd Gear 1.00:1
Reverse Gear 1.93:1
Four Speed M20 Transmission
Base L48 Engine
1st Gear 2.85:1
2nd Gear 2.02:1
3rd Gear 1.35:1
4th Gear 1.00:1
Reverse Gear 2.85:1
Four Speed M20 Transmission
L82 Engine
1st Gear 2.64:1
2nd Gear 1.75:1
3rd Gear 1.34:1
4th Gear 1.00:1
Reverse Gear 2.55:1
Close Ratio Four Speed
M21 Transmission
L82 Engine
1st Gear 2.43:1
2nd Gear 1.61:1
3rd Gear 1.23:1
4th Gear 1.00:1
Reverse Gear 2.35:1
Transmission Lubricant Type GL-5 Gear Lubricant
Lubricant Capacity Four Speed Manual: 3 Quarts
Differential Lubricant Type GL-5
SAE 80W-90
Differential Lubricant Capacity 3.75 pints
Axle Ratio 185 Horsepower Base Engine
Four Speed Manual
3.36:1
185 Horsepower Base Engine
Automatic
3.08:1
220 Horsepower L82 Engine
Four Speed Manual
3.08:1, 3.36:1
220 Horsepower L82 Engine
Automatic
3.55:1, 3.70:1
Transmission Synchromesh All Four Gears
Standard Fuel Tank Capacity 23.7 Gallons
Wheel Turns 2.92
Turning Diameters 37.0 feet (Curb to Curb)
38.6 feet (Wall to Wall)


EPA Fuel Economy

49 State City: 14 mpg
Highway: 19 mpg
Combined: 16 mpg
California City: 13 mpg
Highway: 18 mpg
Combined: 15 mpg


Weight

Model 19437 Sport Coupe (Curb)
Front: 1,679 lb.
Rear: 1,850 lb.
Total: 3,529 lb.
(Shipping)
Front: 1,707 lb.
Rear: 1,694 lb.
Total: 3,401 lb.
Shipping Weight: Coolant to capacity and three gallons gasoline.
Curb Weight: Shipping weight plus gasoline to capacity.

Power to Weight Ratio
185 Horsepower Standard L48 Engine, Four Speed Transmission:
3,829 lb.
Pounds / Horsepower: 20.70
175 Horsepower L48 Standard Engine, California Specification
Four Speed Transmission:
3,829 lb.
Pounds / Horsepower: 21.88
185 Horsepower Standard L48 Engine, Automatic Transmission:
3,863 lb.
Pounds / Horsepower: 20.88
175 Horsepower Standard L48 Engine, California Specification
Automatic Transmission:
3,863 lb.
Pounds / Horsepower: 22.07
220 Horsepower L82 Engine
Four Speed Transmission:
3,849 lb.
Pounds / Horsepower: 17.50
220 Horsepower L82 Engine, Automatic Transmission:
3,883 lb.
Pounds / Horsepower: 17.65

Weight Differentials
Air Conditioning (RPO C60) +63 lb. (With Standard L48 Engine)
(+47 lb. Front; +16 lb. Rear)
+67 lb. (With L82 Engine)
(+50 lb. Front; +17 lb. Rear)
Power Windows (RPO A31) +8 lb.
(+4 lb. Front; +4 lb. Rear)
L82 Engine +20 lb.
(+17 lb. Front; +3 lb. Rear)
+66 lb.
With Automatic Transmission
Standard L48 Engine
With Turbo Hydra Matic Transmission
+34 lb.
(+21 lb. Front; +13 lb. Rear)
Tilt / Telescopic Steering Wheel
(RPO N37)
+2 lb.
(+2 lb. Front; +0 lb. Rear)
Gymkhana Suspension
(RPO FE7)
+7 lb.
(+3 lb. Front; +4 lb. Rear)
Radio, AM/FM Stereophonic
(RPO U58)
+13 lb.
(+7 lb. Front; +6 lb. Rear)
Radio, AM/FM Pushbutton
(RPO U69)
+13 lb.
(+7 lb. Front; +6 lb. Rear)
Radio, AM/FM Stereophonic
With Tape Player
(RPO UM2)
+15 lb.
(+8 lb. Front; +7 lb. Rear)
Heavy Duty Battery
(RPO UA1)
+5 lb.
(+0 lb. Front; +5 lb. Rear)
Power Antenna
(RPO U75)
+4 lb.


Engine Specs

Type: V8
Valve Location: In Head
Bore / Stroke: 4.00" / 3.48" (Standard, L82 350 Cubic Inch)
Displacement: Standard, L82 Engines: 350 Cubic Inches
Compression Ratio: 8.2:1 (Standard Engine)
8.9:1 (L82 Engine)
Cylinder Head Material: Cast Alloy Iron
Cylinder Block Material: Cast Alloy Iron
Oil Pump Type: Gear
Normal Oil Pressure 32 - 40 psi @ 2,000 RPM
Oil Pressure Gauge Electrical
Crankcase Oil Capacity, Standard, L82 Engines 4.0 Quarts, Less Filter
4.5 Quarts, With Filter Change
Recommended Oil Grade Above 20°F: SAE 20W-20, SAE 10W-30, 10W-40
20W-40, 20W-50
0°F to 60°F: SAE 10W, 5W-30, 10W-30, 10W-40
Below 20°F: SAE 5W-20, 5W-30
Fuel Filter Mesh Strainer
Fuel Pump Mechanical
Fuel Pressure 7.5 - 9.0 PSI
Cooling System Capacity 21.6 Quarts (with heater)
Thermostat Type Pellet
Radiator Cap Relief Pressure ~15 PSI
Battery 12 volt - 6 Cells, 78 plates
3,500 Watts
Heavy Duty (RPO UA1)
12 volt - 6 Cells, 90 plates
4,000 Watts
Thermostat Opening 192° - 198° F
Fully Opened at 227°

Brakes
Type Caliper Disc, Four Wheel Hydraulic
Gross Lining Area 86.30 Square Inches
Swept Area 498.30 Square Inches
Disc Vented

Horsepower
Standard Engine (350 cubic inch) 185 hp @ 4,000 RPM;
Torque: 280 lb-ft @ 2,400 RPM
RPO L82 (350 cubic inch) 210 hp @ 5,200 RPM;
Torque: 260 lb-ft. @ 3,600 RPM

Ignition System
Ignition Timing Centrifugal Advance Distributor | 1103337 | Base Engine
Manual Transmission
Start: 0° @ 1,100 RPM
Intermediate: 12° @ 1,600 RPM
Maximum: 22° @ 4,600 RPM
Distributor | 1103353 | Base Engine
Automatic Transmission
Start: 0° @ 1,100 RPM
Intermediate: 12° @ 1,600 RPM
Maximum: 22° @ 4,600 RPM
Distributor | 1103285 | Base Engine
California, Automatic Only
Start: 0° @ 1,200 RPM
Intermediate: 12° @ 2,000 RPM
Maximum: 22° @ 4,200 RPM
Distributor | 1103291 | L82 Engine
Start: 0° @ 1,200 RPM
Intermediate: 13° @ 1,600 RPM
Maximum: 16° @ 2,000 RPM
Ignition Timing Vacuum Advance Distributor | 1103337 | Base Engine
Start: 0° @ 4 inches Hg
Maximum: 24° @ 10 inches Hg
Distributor | 1103353 | Base Engine
Start: 0° @ 4 inches Hg
Maximum: 20° 10 inches Hg
Distributor | 1103285 | L82 Engine
California, Automatic Only
Start: 0° 4 inches Hg
Maximum: 10° 8 inches Hg
Distributor | 1103291 | L82 Engine
Start: 0° 4 inches Hg
Maximum: 10° 8 inches Hg
Initial Timing Distributor | 1103337 | Base Engine
6° BTC @ 700 RPM - Manual Transmission
Distributor | 1103353 | Base Engine
6° BTC @ 500 RPM - Automatic Transmission
Distributor | 1103285 | Base Engine
California Only
8° BTC @ 500 RPM - Automatic Transmission
Distributor | 1103291 | L82 Engine
12° BTC @ 900 RPM - Manual Transmission
12° BTC @ 700 RPM - Automatic Transmission
Spark Plug AC Spark Plug
ACR45TS
Spark Plug Torque 25 lb.-ft.
Spark Plug Thread 14 mm.
Spark Plug Gap .045 inch
Firing Order 1-8-4-3-6-5-7-2
Idle Standard Engine, Manual Transmission:
700 RPM (In Neutral)
Standard Engine, Automatic Transmission:
500 RPM (In Drive)
L82 Engine, Manual Transmission:
900 RPM (In Neutral)
L82 Engine, Automatic Transmission:
700 RPM (In Drive)

1978 Corvette Options

RPO Description Production Price