With the arrival of the ZR-1 in 1990, the Corvette had once more been elevated to a stature that had been missing since the early seventies. The “King of the Hill” had arrived and had met or exceeded the expectations of most enthusiasts and automobile reviewers alike.
Read More: 1991 Chevrolet Corvette Research Center
1991 Corvette Specifications
1991 Corvette Main Specs
| MODEL: | 1991 Chevrolet Corvette |
| BODY STYLE: | Two-door Coupe/Hatchback, front engine, rear wheel drive |
| MANUFACTURING LOCATION: | Bowling Green, Kentucky |
| CONSTRUCTION: | Fiberglass body, unibody construction with partial, front frame including both steel and stainless steel components. |
| VEHICLE NUMBERS (VIN): | 1G1YY2386M5100001 THRU 1G1YY2386M5118595 1G1YZ23J6M5800001 THRU 1G1YZ23J6M5802044 (ZR-1) |
| VIN SUFFIX: | ZTA: 350 CUBIC INCH, 245/250 HP, AUTOMATIC TRANS ZTB: 350 CUBIC INCH, 245/250HP, MANUAL TRANS. ENGINE OIL COOLER ZTC: 350 CUBIC INCH, 245/250HP, AUTO TRANS, ENGINE OIL COOLER ZTK: 350 CUBIC INCH, 375HP |
| ENGINE BLOCK NUMBER: | 10153558: 350 CUBIC INCH, 375 HORSEPOWER 14093638: 350 CUBIC INCH, 245/250 HORSEPOWER |
| HEAD NUMBER: | 10088113: 350 CUBIC INCH, 245/250 HORSEPOWER 10174390: 350 CUBIC INCH, 375 HORSEPOWER (RIGHT HAND) 10174389: 350 CUBIC INCH, 375 HORSEPOWER (LEFT HAND) |
Note: For Callaway Twin-Turbo, Chevrolet engine coding was replaced as follows: First two digits for year, next three digits for Callaway sequence, last four digits to match the last four digits of the vehicle identification number.
1991 Corvette Powertrain Specifications
Engine (Coupe/Convertible)
| Engine: | L98 5.7 OHV 350 V-8. Tuned-Port Fuel Injection (COUPE) |
| Cylinders: | V8 |
|
Block Material:
|
Cast Iron Alloy |
| Displacement: | 5.7 Litre/350 Cubic Inches |
| Bore & Stroke: | 4.00 x 3.48 inches |
| Valvetrain: | OHV, 2 valves per cyl. |
| Cylinder Head Material: | Aluminum |
| Cylinder Block Deck Height: | 9.025 Inches |
| Compression Ratio: | 10.0:1 |
| Horsepower: | 245/250 HP @ 4,400 RPM |
| Torque: | 350 lb-ft @ 3,200 rpm |
| Fuel Delivery: | Multi-Port Fuel Injection |
| Fuel Capacity: | 20.0 Gallons |
| Oil Capacity: | 4.5 Quarts (Without Filter) |
| Total Dressed Engine Weight (Dry): | 585.7lbs |
| Transmission: | 4 Speed Auto Transmission (Standard), 6 Speed Manual Transmission (Optional) |
| Standard Axle Ratio: | 2.59:1 (Automatic), 3.33:1 (Manual) |
Engine (ZR-1)
| Engine: | LT5 5.7 OHV 350 V-8. Multi-Port Fuel Injection (COUPE) |
| Cylinders: | V8 |
|
Block Material:
|
Aluminum* |
| Displacement: | 5.7 Litre/350 Cubic Inches |
| Bore & Stroke: | 3.90 x 3.66 inches |
| Valvetrain: | OHV, 2 valves per cyl. |
| Cylinder Head Material: | Aluminum |
| Cylinder Block Deck Height: | 9.025 Inches |
| Compression Ratio: | 11.0:1 |
| Horsepower: | 375 HP @ 6,000 RPM |
| Torque: | 370 lb-ft @ 4,800 rpm |
| Fuel Delivery: | Tuned-Port Fuel Injection |
| Fuel Capacity: | 20.0 Gallons |
| Oil Capacity: | 9.6 Quarts (Without Filter) |
| Total Dressed Engine Weight (Dry): | 596.0 lbs |
| Transmission: | 4 Speed Auto Transmission (Standard), 6 Speed Manual Transmission (Optional) |
| Standard Axle Ratio: | 2.59:1 (Automatic), 3.33:1 (Manual) |
*The engine crankcase, cylinder case, cylinder heads is aluminum with cast-in nodular cast iron bearing inserts.
Transmission
| 6 SPEED MANUAL GEAR RATIOS | 4 SPEED AUTOMATIC GEAR RATIOS | ||
| 1st GEAR: | 2.68:1 | 1st GEAR: | 3.06:1 |
| 2nd GEAR: | 1.80:1 | 2nd GEAR: | 1.63:1 |
| 3rd GEAR: | 1.31:1 | 3rd GEAR: | 1.00:1 |
| 4th GEAR: | 1.00:1 | 4th GEAR: | 0.70:1 |
| 5th GEAR: | 0.75:1 | REVERSE: | 2.29:1 |
| 6th GEAR: | 0.50:1 | ||
| REVERSE: | 2.50:1 | ||
1991 Corvette Wheels, Suspension & Brakes
Suspension (Coupe/Convertible)
| Front Suspension | Independent, unequal length upper and lower A-arms, transverse fiberglass leaf spring, tubular hydraulic shock absorbers, anti-roll bar. |
| Rear Suspension | Independent, upper and lower trailing arms, lateral arms, tie rods, halfshafts, transverse fiberglass leaf springs, tubular hydraulic shock absorbers, anti-roll bar. |
Suspension (ZR-1)
| Front Suspension | Single fiberglass composite monoleaf transverse spring with unequal-length aluminum control arms and stabilizer bar. |
| Rear Suspension | Fully independent five-link system with transverse fiberglass single-leaf springs, aluminum upper/lower trailing links and strut-rod tie-rod assembly. |
Wheels & Tires (Coupe/Convertible)
| Front Tires | Goodyear Eagle ZR, P275/40ZR-17 |
| Rear Tires | Goodyear Eagle ZR, P275/40ZR-17 |
| Front Wheels | 17 x 9.5 Inches, 5 Bolt Cast Alloy |
| Front Wheels | 17 x 9.5 Inches, 5 Bolt Cast Alloy |
Wheels & Tires (ZR-1)
| Front Tires | Goodyear Eagle ZR, P275/40ZR-17 |
| Rear Tires | Goodyear Eagle ZR, P315/35ZR-17 ZR-1 |
| Front Wheels | 17 x 9.5 Inches, 5 Bolt Cast Alloy |
| Front Wheels | 17 x 11 Inches, 5 Bolt Cast Alloy |
Brakes (Coupe/Convertible)
| Type | ABS Power-Assist Vented Brakes |
| Front Brakes | 12.0 Inches |
| Rear Brakes | 12.0 Inches |
Brakes (Coupe/Convertible)
| Type | ABS Power-Assist Vented Brakes |
| Front Brakes | 13.0 Inches (13.0 Inches – RPO Z51) |
| Rear Brakes | 13.0 Inches (13.0 Inches – RPO Z51) |
1991 Corvette Exterior Dimensions
Coupe Dimensions
Exterior Dimensions
| Exterior Dimensions | |||
| Model | L98 Coupe | L98 Convertible | ZR-1 Coupe |
| Wheelbase | 96.2 Inches | 96.2 Inches | 96.2 Inches |
| Overall Length | 176.5 Inches | 176.5 Inches | 177.4 Inches |
| Total Body Width | 71.0 Inches | 71.0 Inches | 74.0 Inches |
| Overall Height | 46.7 Inches | 46.7 Inches | 46.8 Inches |
| Front Track Width | 59.6 Inches | 59.6 Inches | 61.9 Inches |
| Rear Track Width | 60.4 Inches | 60.4 Inches | 61.9 Inches |
Interior Dimensions
| Interior Dimensions | |||
| Model | L98 Coupe | L98 Convertible | ZR-1 Coupe |
| Headroom | 36.4 Inches | 36.5 Inches | 36.4 Inches |
| Shoulder Room | 54.1 Inches | 54.1 Inches | 54.0 Inches |
| Hip Room | 49.3 Inches | 49.3 Inches | 49.3 Inches |
| Leg Room | 42.6 Inches | 42.6 Inches | 42.6 Inches |
Capacities
| Capacities | |||
| Model | L98 Coupe | L98 Convertible | ZR-1 Coupe |
| Passenger Capacity | 2 – Driver & Passenger | 2 – Driver & Passenger | 2 – Driver & Passenger |
| Curb Weight – Automatic (LBS) | 3,294 | 3,294 | 3,470 |
| Curb Weight – Manual (LBS) | 3,330 | 3,336 | 3,465 |
| Cargo Volume (CU.FT) | 17.9 Cubic Feet | 17.9 Cubic Feet | 12.6 Cubic Feet |
| Fuel Capacity (GALLONS/LITERS) | 20.0/76.0 | 20.0/76.0 | 20.0/76.0 |
| Engine Oil Capacity (QTS./LITERS) | 4.5 | 4.5 | 8.0 |
| Coolant Capacity (QTS./LITERS) | 14.6 | 14.6 | 14.6 |
| Coefficient of Drag | 0.33 | N/A | N/A |
| Weight Dist. Front/Rear (%) | 50/50 | 50/50 | 50/50 |
1991 Corvette Performance Results
| Model: |
L98 Coupe
|
L98 Convertible
|
ZR-1 Coupe
|
Callaway
|
|
0-30 MPH:
|
N/A
|
N/A
|
2.1 Seconds
|
N/A
|
|
0-60 MPH:
|
5.3 Seconds
|
5.6 Seconds
|
4.9 Seconds
|
N/A
|
|
0-100 MPH:
|
N/A
|
N/A
|
11.2 Seconds
|
N/A
|
|
QUARTER MILE:
|
13.9 Seconds
|
14.1 Seconds
|
13.2 Sec/108mph
|
N/A
|
|
TOP SPEED (MPH):
|
N/A
|
N/A
|
171
|
192 |
