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1991 Chevrolet Corvette Convertible in White
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1991 Corvette Specs

Body Specs

Wheelbase 96.2 inches
Overhang (Front) 40.5 inches
Overhang (Rear) 39.7 inches
Front Track 59.6 inches
Rear Track 60.4 inches
ZR-1: 61.9 inches
Length 176.6 inches
ZR-1: 177.4 inches
Width 71.0 inches
ZR-1: 73.291 inches
Ground Clearance
Differential to Ground
6.8 inches
Ground Clearance
Front Bumper to Ground
4.9 inches
Ground Clearance
Rear Bumper to Ground
13.0 inches
Minimum Ground Clearance 4.7 inches
(Measured at Catalytic Converter)
Overall Height 46.7 inches (Coupe)
46.4 inches (Convertible)
46.7 inches (Zr-1)
Rocker Panel to Ground (Front) 6.9 inches
Rocker Panel to Ground (Rear) 6.9 inches
Cargo Capacity 100 lbs. / (Coupe and Convertible)
6.6 cubic feet (Convertible)
12.6 cubic feet (Coupe)
Liftover Height: 35.5 Inches (Coupe)
Cowl Height 33.4 inches
Effective Head Room 36.4 inches
Shoulder Room 54.1 inches
Hip Room 49.3 inches
Tire Size P275/40ZR17 B/W
(Goodyear Eagle 40ZR, Unidirectional)
ZR-1 (Rear)
P315/35ZR17
Wheel Size 17" x 9.5" (Front and Rear)
ZR-1 Rear: 17" x 11.0"
Recommended Tire Inflation 35 PSI Front / Rear
Manual Six Speed Transmission 1st Gear 2.68:1
2nd Gear 1.80:1
3rd Gear 1.31:1
4th Gear 1.00:1
5th Gear .75:1
6th Gear .50:1
Reverse Gear 2.50:1
Turbo Hydra-Matic (Automatic) Transmission 1st Gear 3.06:1
2nd Gear 1.63:1
3rd Gear 1.00:1
4th Gear 0.70:1
Reverse Gear 2.29:1
Turbo Hydra-Matic (Automatic)
Transmission Lubricant
Dextron II
8.0 Pints
Maximum Uphill Speed
(Wide Open Throttle)
1 > 2: 43 MPH
2 > 3: 79 MPH
3 > 4: 116 MPH
Manual Transmission
Lubricant Type
5W-30 Texaco Code 1650 TL11408A, GM 9985535
2.1 Liters
Axle Ratio 3.07:1, 3.33:1, 2.73:1 (Manual Transmission)
2.59:1, 3.07:1 (Automatic Transmission)
Standard Fuel Tank Capacity 20 Gallons
Steering Ratio 15.7:1
Turning Diameters
Outside Front
41.3 feet (Wall to Wall)
40.0 feet (Curb to Curb)
Steering Wheel Diameter 15.0 inches


EPA Fuel Economy

Twin Turbo Manual City: 13
Highway: 20
Combined: 15
Manual City: 15
Highway: 23
Combined: 17
Automatic City: 15
Highway: 22
Combined: 17
Manual City: 15
Highway: 24
Combined: 18


Weight

Model 1YY07 2-Door Hatchback Coupe Curb Mass
Front: 1,693 lb.
Rear: 1,601 lb.
Total: 3,294 lb.
Shipping**: 3,188 lb.
ETWC*: 3,625 lb.
Model 1YY67 2-Door Convertible Curb Mass
Front: 1,717 lb.
Rear: 1,616 lb.
Total: 3,333 lb.
Shipping**: 3,230 lb.
ETWC*: 3,750 lb.
Model 1YZ07 2-Door Hatchback Coupe (ZR1) Curb Mass
Front: 1,812 lb.
Rear: 1,658 lb.
Total: 3,470 lb.
Shipping**: 3,366` lb.
ETWC*: 3,750 lb.
* Equivalent Test Weight Class - basis for US Environmental Protection Agency emission certifications.
** Shipping weight = Curb Weight Less 106 lbs.

Weight Differentials
Removeble Plastic Roof Panel
(RPO CC3)
-3.1 lb.
(-0.9 lb. Front; -2.2 lb. Rear)
Electric Defogger System
Rear Window and Side Mirror
(RPO Z6A)
+0.8 lb.
(+0.4 lb. Front; +0.4 lb. Rear)
Delco-Bose
Premium Audio System
(RPO UU8)
+9.7 lb.
(+3.3 lb. Front; +6.4 lb. Rear)
Custom Adjustable Seats
(RPO AQ9)
+13.5 lb.
(+6.2 lb. Front; +7.3 lb. Rear)
Automatic Air Conditioning
(RPO C68)
+2.2 lb.
Leather Seat Trim
(RPO AR9)
+3.5 lb.
(+1.3 lb. Front; +2.2 lb. Rear)
Adjustable Suspension Package
(RPO Z07)
+9.5 lb.
(+4.2 lb. Front; +5.3 lb. Rear)


Engine Specs

Type: 90° V8 (LT5: DOHC 32-Valve)
Bore / Stroke: 4.00" / 3.48"
LT-5: 3.90" x 3.66"
Engine Weight: ZR-1 LT5 596 lb.
Standard L98: 557 lb.
Fuel Requirement: 91-Octane Rating Unleaded Gasoline
(L98, ZR-1 Engines)
Compression Ratio: L98: 10.0:1
LT5 (ZR-1): 11.0:1
Cylinder Head Material: Aluminum
Cylinder Block Material: L98: Cast Alloy Iron
LT5 (ZR-1): Aluminum
Oil Pump Type: Gear
Cooling System Capacity 14.65 Quarts (Manual Transmission)
14.51 Quarts (Automatic Transmission)
16.7 Quarts (ZR-1)
Battery 12 volt - 630 Cold Cranking Amps (CCA)
54 Amp-hours
Alternator Delco-Remy
105 Amps

Fuel System
Type Electronic Fuel Injection - Tuned Port Injection (TPI)
(L98 and LT5 Engines)
Fuel Pump Electric, Dual Turbine - In Fuel Tank
Point of Injection Fuel Injectors at Inlet Ports
Flow Pulse

Horsepower
ZR-1 Engine LT5 (350 cubic inch) 375 hp @ 5,800 RPM;
Torque: 370 lb-ft @ 4,800 RPM
Axle Ratio: 3.45:1
Standard Engine L98 (350 cubic inch) Manual Transmission: 250 hp @ 4,400 RPM;
Torque: 350 lb-ft @ 3,200 RPM
Axle Ratio: 3.45:1
Automatic Transmission: 245 hp @ 4,000 RPM;
Torque: 345 lb-ft @ 3,200 RPM
Axle Ratio: 2.59:1
Automatic Transmission: 250 hp @ 4,400 RPM;
Torque: 350 lb-ft @ 3,200 RPM
Axle Ratio: 3.07:1
Automatic Transmission: 245 hp @ 4,000 RPM;
Torque: 345 lb-ft @ 3,200 RPM
Axle Ratio: 2.73:1

Ignition System
Spark Plug
(Standard L98 Engine)
FR5LS
Make: AC
Spark Plug
(ZR-1 LT5 Engine)
FR2LS
Make: AC
Spark Plug Thread M14 x 1.25
Spark Plug Gap .035 inch
Spark Plug Tightening Torque 18 - 22 lb. - ft.

Brakes
Type Hydraulic Power Brake Front and Rear Disc
Effective Area 32.4 Square Inches (209 Square cm.) (Front)
18.4 Square Inches (119 Square cm.) (Rear)
Gross Lining Area 33.0 Square Inches (213 Square cm.) (Front)
18.4 Square Inches (119 Square cm.) (Rear)
Swept Area 111.9 Square Inches (722 Square cm.) (Front)
91.3 Square Inches (589 Square cm.) (Rear)
Rotor Outer Working Diameter: (302 mm.) 9.9 inches
Inner Working Diameter:
7.3 Inches (222 mm.) (Front),
7.6 Inches (232 mm.) (Rear)
Type and Material: Vented, Gray Iron Vented (Front)
HCE Iron Vented (Rear)

1991 Corvette Options

RPO Description Production Price
24S Removable Roof Panel, blue tint (coupe) 6,991 (33.87%) $615.00
64S Removable Roof Panel, bronze tint (coupe) 3,036 (14.71%) $615.00
AC1 Power Passenger Seat 17,267 (83.66%) $290.00
AC3 Power Driver Seat 19,937 (96.60%) $290.00
AQ9 Sports Seats, leather 10,650 (51.60%) $1,050.00
AR9 Base Seats, leather 9,505 (46.05%) $425.00
B2K Callaway Twin Turbo (not GM installed) 71 (0.34%) $33,000.00
C2L Dual Removable Roof Panels (coupe) 5,031 (24.38%) $915.00
C68 Electronic Air Conditioning Control 19,233 (93.19%) $180.00
CC2 Auxiliary Hardtop (convertible) 1,230 (5.96%) $1,995.00
FX3 Selective Ride and Handling, electronic 6,894 (33.40%) $1,695.00
G92 Performance Axle Ratio 3,453 (16.73%) $22.00
KC4 Engine Oil Cooler 7,525 (36.46%) $110.00
MN6 6-Speed Manual Transmission 5,875 (28.47%) n/a
NN5 California Emission Requirements 3,050 (14.78%) $100.00
U1F Stereo System with CD, Delco-Bose 15,345 (74.35%) $1,219.00
UJ6 Low Tire Pressure Warning Indicator 5,175 (25.07%) $325.00
UU8 Stereo System, Delco-Bose 3,786 (18.34%) $823.00
V56 Luggage Rack (convertible) 886 (4.29%) $140.00
Z07 Adjustable Suspension Package (coupe) 733 (3.55%) $2,155.00
ZR1 Special Performance Package (coupe) 2,044 (9.90%) $31,683.00

Total Production: 20,639
Coupe: 14,967 (72.52%)
Convertible: 5,672 (27.48%)

Notes: Base Corvette Coupe with 350 cu. in. 245 hp engine and four speed automatic transmission: $32,455.00.
Base Corvette Convertible with 350 cu. in. 240 hp engine and four speed automatic transmission: $38,770.00.

Colors

Code Exterior Quantity Interior Soft Top
10 White 4,305 (20.86%) Blue / Black / Gray / Red / Saddle Black / Beige / White
25 Steel Blue Metallic 835 (4.05%) Blue / Black Blue / Black / White
35 Yellow 650 (3.15%) Black / Gray / Saddle Black / Beige / White
41 Black 3,909 (18.94%) Blue / Black / Gray / Saddle Black / Beige / White
42 Turquoise Metallic 1,621 (7.85%) Black / Saddle Blue / Black
75 Dark Red Metallic 1,311 (6.35%) Black / Saddle Black / Beige / White
80 Quasar Blue Metallic 1,038 (5.03%) Black / Saddle Black / Beige
81 Bright Red 5,318 (25.77%) Black / Gray / Red / Sadddle Black / Beige / White
91 Polo Green Metallic 1,230 (5.96%) Black / Saddle Black / Beige
96 Charcoal Metallic 417 (2.02%) Black / Gray / Saddle Black / White


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