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1981 Chevrolet Corvette C3
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1981 Corvette Specs

Body Specs

Wheelbase 98.0 inches
Overhand (Front) 42.4 inches
Overhang (Rear) 44.9 inches
Front Track 58.7 inches
Rear Track 59.5 inches
Length 185.3 inches
Ground Clearance
Differential to Ground
12.9 inches
Ground Clearance
Front Bumper to Ground
9.4 inches
Ground Clearance
Rear Bumper to Ground
11.4 inches
Ground Clearance
Rear Axle to Ground
12.9 inches
Minimum Ground Clearance 4.1 inches
(Measured at Catalytic Converter)
Overall Height 48.1 inches
Rocker Panel to Ground (Front) 8.0 inches
Rocker Panel to Ground (Rear) 7.7 inches
Luggage Capacity 8.4 Cubic Feet
Cowl Height 35.4 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 35 PSI Front; 35 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 Transmission 1st Gear 2.88:1
2nd Gear 1.91:1
3rd Gear 1.33:1
4th Gear 1.00:1
Reverse Gear 2.78:1
Transmission Lubricant Type GL-5 Gear Lubricant
80W or 80W-90
Lubricant Capacity Four Speed Manual: 3.4 Quarts
Differential Lubricant Type GL-5
SAE 80W-90
Axle Ratio Automatic, Four Speed Manual
2.72:1, 2.87:1
Transmission Synchromesh All Four Gears
Standard Fuel Tank Capacity 24 Gallons (Approximately)
Steering Ratio 16.1:1
Steering Wheel Diameter 14.5 inches
Wheel Turns 2.58
Turning Diameters 40.4 feet (Curb to Curb)
41.3 feet (Wall to Wall)


EPA Fuel Economy

49 State 15 mpg (Automatic)
14 mpg (Manual)
California 15 mpg (Automatic)
14 mpg (Manual)


Weight

Model 1YY87 Sport Coupe (Curb)
Front: 1,594 lb.
Rear: 1,713 lb.
Total: 3,307 lb.
(Shipping)
Total: 3,179 lb.
Curb Weight: The calculated weight of a vehicle with standard equipment, only as designed with the additional load of oils, lubes coolants and fuel all filled to capacity.
Shipping Weight: Same as base curb weight except 3 gallons of gasoline.

Weight Differentials
Standard Engine
With Turbo Hydra Matic Transmission
+38.2 lb.
(+22.4 lb. Front; +15.8 lb. Rear)
Radio, AM/FM Stereophonic
(RPO U58)
+10 lb.
(+6 lb. Front; +4 lb. Rear)
Radio, AM/FM Stereo With CB,
8 Track Tape Player
(RPO UM5)
+1.2 lb.
(+.8 lb. Front; +.4 lb. Rear)
Radio, AM/FM Stereophonic
With Cassette Tape Player
(RPO UM6)
+1.2 lb.
(+.8 lb. Front; +.4 lb. Rear)
Radio, AM/FM Stereophonic
With 8 Track Tape Player
(RPO UM4)
+2.8 lb.
(+1.4 lb. Front; +1.4 lb. Rear)
Radio, AM/FM Stereophonic
With CB, Cassette Tape Player
(RPO UN5)
+1.2 lb.
(+.8 lb. Front; +.4 lb. Rear)
Gymkhana Suspension
(RPO FE7)
+37.0 lb.
(+5.2 lb. Front; +31.8 lb. Rear)
Power Antenna
All Radios Except Citizen's Band
(RPO U75)
+3.6 lb.
(-0.8 lb. Front; +4.4 lb. Rear)
Aluminum Wheels
(RPO N90)
-47.1 lb.
(-23.8 lb. Front; -23.3 lb. Rear)
Glass Roof Panels
(RPO CC1)
+14.6 lb.
(+4.4 lb. Front; +10.2 lb. Rear)
Carrier-Roof Panel
(RPO K30)
+7.0 lb.
(-1.8 lb. Front; +8.8 lb. Rear)


Engine Specs

Type: V8
Valve Location: In Head
Bore / Stroke: 4.00" / 3.48"
Displacement: 350 Cubic Inches
(5.7 Liters)
Compression Ratio: 8.2:1
Cylinder Head Material: High Chrome Cast Alloy Iron
Cylinder Block Material: Cast Alloy Iron
Oil Pump Type: Gear
Crankcase Oil Capacity 4.0 Quarts, Less Filter
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 in Gasoline Tank and
Paper Filter Element in Carburetor Inlet.
Fuel Pump Mechanical
Fuel Pressure 7.5 - 9.0 PSI
Cooling System Capacity 21.6 Quarts
Radiator Cap Relief Pressure 15 PSI
Battery 12 volt - 115 Minute Reserve Capacity

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) 190 hp @ 4,200 RPM;
Torque: 280 lb-ft @ 1,600 RPM

Ignition System
Ignition Timing Centrifugal Advance Does Not Apply
Ignition Timing Vacuum Advance Does Not Apply
Initial Timing Distributor | 1103443 | Base Engine
6° BTC
Manual / Automatic
Spark Plug R45TS
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)

1981 Corvette Options

RPO Description Production Price
A42 Power Driver Seat 29,200 (71.91%) $183.00
AU3 Power Door Locks 36,322 (89.45%) $145.00
C49 Rear Window Defogger 36,893 (90.86%) $119.00
CC1 Removable Glass Roof Panels 29,095 (71.65%) $414.00
D84 Two-Tone Paint 5,352 (13.18%) $399.00
DG7 Electric Sport Mirrors 13,567 (33.41%) $117.00
F51 Heavy Duty Shock Absorbers 1,128 (2.78%) $37.00
FE7 Gymkhana Suspension 7,803 (19.22%) $57.00
G92 Performance Axle Ratio 2,400 (5.91%) $20.00
K35 Cruise Control 32,522 (80.09%) $155.00
MM4 4-Speed Manual Transmission 5,757 (14.18%) n/a
N90 Aluminum Wheels (4) 36,485 (89.85%) $428.00
QGR White Letter SBR Tires, P225 / 70R15 21,939 (54.03%) $72.00
QXH White Letter SBR Tires, P255 / 60R15 18,004 (44.34%) $491.92
U58 AM-FM Radio, stereo 5,145 (12.67%) $95.00
U75 Power Antenna 32,903 (81.03%) $55.00
UL5 Radio Delete 315 (0.78%) n/a
UM4 AM-FM Radio, etc stereo with 8-track 8,262 (20.35%) $386.00
UM5 AM-FM Radio, etc stereo with 8-track/CB 792 (1.95%) $712.00
UM6 AM-FM Radio, etc stereo with cassette 22,892 (56.38%) $423.00
UN5 AM-FM Radio, etc stereo with cassette/CB 2,349 (5.78%) $750.00
V54 Roof Panel Carrier 3,303 (8.13%) $135.00
YF5 California Emission Certification 4,951 (12.19%) $46.00
ZN1 Trailer Package 916 (2.26%) $110.00

Total Production: 40,606
Coupe: 40,606 (100.00%)

Notes: Base Corvette Coupe with 350 cu. in. 190 hp engine: $16,258.52.
Manual or automatic transmission was a no-cost buyers choice.

Colors

Code Exterior Quantity Interior
06 Mahogany Metallic 1,092 (2.69%) Camel / Dark Red
10 White 6,387 (15.73%) Black / Charcoal / Camel / Dark Blue / Dark Red / Medium Red / Silver Grey
13 Silver Metallic 2,590 (6.38%) Black / Charcoal / Dark Blue / Medium Red / Silver Grey
19 Black 4,712 (11.60%) Black / Charcoal / Camel / Dark Red / Medium Red / Silver Grey
24 Bright Blue Metallic 1 (0.00%) Charcoal / Camel / Dark Blue / Silver Grey
28 Dark Blue Metallic 2,522 (6.21%) Camel / Dark Blue / Medium Red / Silver Grey
33 Silver Metallic 3,369 (8.30%) Charcoal / Dark Blue / Dark Red / Silver Grey
33/38 Silver / Dark Blue n/a Dark Blue / Silver Gray
33/39 Silver / Charcoal n/a Charcoal / Silver Gray
38 Dark Blue Metallic 496 (1.22%) Camel / Dark Blue / Silver Grey
39 Charcoal Metallic 613 (1.51%) Charcoal / Dark Red / Silver Grey
50 Beige 2,239 (5.51%) Charcoal / Camel / Dark Blue / Dark Red
50/74 Beige / Dark Bronze n/a Camel
52 Yellow 1,031 (2.54%) Black / Charcoal / Camel
59 Beige 3,842 (9.46%) Camel / Dark Blue / Dark
74 Dark Bronze 432 (1.06%) Charcoal / Camel
75 Red 4,310 (10.61%) Black / Charcoal / Camel / Medium Red / Silver Grey
79 Maroon Metallic 1,618 (3.98%) Black / Charcoal / Camel / Medium Red / Silver Grey
80 Autumn Red 1,505 (3.71%) Charcoal / Camel / Dark Red / Silver Grey
80/98 Autumn Red / Dark Claret n/a Dark Red / Silver Gray
84 Charcoal Metallic 3,485 (8.58%) Black / Charcoal / Camel / Medium Red / Silver Grey
98 Dark Claret Metallic n/a Camel / Dark Red / Silver

Notes: The vast color choices was due to the fact that 1981 Corvettes were built at both the St. Louis MO and Bowling Green KY plants.


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