Unveiling the C4 1991 Corvette: Specs, Brochure, and Rare Photos

Discover the Specs and History of the 1991 Corvette: from Production Numbers to ZR-1 Options and C4 1991 Corvette Brochure

Today we are examining the features of the C4 1991 Corvette alongside the brochure and some visual content. The brochure, with its front and back covers, is comprised of 34 pages. The items covered include the speed of a 1991 Chevrolet Corvette; the engine type and horsepower; the engine of the 1991 ZR1 Corvette; the ten available exterior colors; interior color choices; convertible top colors; seat options; the coupe’s and ZR1’s dimensions; options; engine options; transmissions; gas mileage; and the option B2K Callaway Twin Turbo conversions and some trivia.

Table of Contents

The C4 Corvette ran from 1984 through 1996.  1991 was the 8th year for the fourth generation Vette.

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Total production numbers for the 91 Corvette were 20,639.  The Coupes accounted for 14,967, and the 1991 Corvette Convertible accounted for 5,672.  The base sport coupe ran $32,4555, and the convertible ran $38,770. 

The Corvette ZR-1 arrived in 1990.  The “King of the Hill” sold 3,032 in 1990, but the 91 Corvette ZR1 only sold 2,044; this option added another $31,683 to the coupes price tag.

How fast is a 1991 Chevrolet Corvette?

In 1991 Chevy Corvette C4 ZR1 was one of the fastest American cars, hitting speeds up to 176 mph. With amazing acceleration, the 1991 Corvette 0 60 was in just 4.5 seconds and completed the quarter-mile in a lightning-quick 12.8 seconds, reaching over 111 mph.

What engine does a 1991 Corvette have? How much HP does a 91 Vette have?

In 1991, the Corvette Base Model featured a 350 cubic inch, Tuned-Port Fuel Injected L98 V8 engine producing 240 to 245 horsepower, while the ZR-1 was fitted with a more powerful 350 cubic inch LT5 V8 engine generating 375 horsepower.

What engine does the 1991 ZR1 Corvette have?

Developed by Lotus, the 91 Corvette ZR-1 proudly featured the first-ever LT5 V8 engine in the Corvette lineup. Boasting a 5.7-liter aluminum structure and double overhead cams with four valves per cylinder, the 1991 ZR1 proudly generated an impressive 380 horsepower during its era. However, Chevy wasn’t responsible for the production of this particular engine. Rather, production of the engine was subcontracted to MerCruiser, a division of Mercury Marine.

Ten Color Choices for the 1991 Chevy Corvette

  • White
  • Steel Blue Metallic
  • Yellow
  • Black
  • Turquoise Metallic
  • Dark Red Metallic
  • Quasar Blue Metallic
  • Bright Red
  • Polo Green Metallic
  • Charcoal Metallic

Interior Colors

  • Black
  • Blue
  • Gray
  • Red

91 Corvette Convertible Top Colors

  • Black
  • White Saddle

Seat Options Included:

  • Standard Cloth Seat
  • Optional Leather Seat
  • Optional Leather Sport Seat

Dimensions of the coupe

  • Length 178.6 in.
  • Overall width without mirrors 71.0 in.
  • Height 46.4 in.
  • Wheelbase 96.2 in.
  • Curb weight 3,223 lbs.
  • Front Seat Dimensions
  • Front Seat Dimensions
  • Front head room 36.4 in.
  • Front leg room 42.6 in.

Dimensions of the ZR1

  • Length 178.5 in.
  • Overall width without mirrors 74.0 in.
  • Height 46.7 in.
  • Wheelbase 96.2 in.
  • Curb weight 3,465 lbs.
  • Front Seat Dimensions
  • Front head room 36.4 in.
  • Front leg room 42.6 in.

1991 Corvette Options:

RPO#DESCRIPTIONQUANTITY$ RETAIL
1YY07Base Corvette Sport Coupe14,96732,455
1YY67Base Corvette Convertible5,67238,770
AR9Base Seats – Leathern/a425
AQ9Sport Seats – Leather10,6501,050
AC3Power Driver Seat19,937290
AC1Power Passenger Seat17,267290
B2KCallaway Twin-Turbo6233,000
CC2Auxillary Hardtop (convertible)1,2301,995
C2LDual Removable Roof Panels (coupe)5,031915
24SRemovable Roof Panel, blue tint (coupe)6,991615
64SRemovable Roof Panel, bronze tint (coupe)3,036615
C68Air Conditioning, Electronic Control19,233180
FX3Selective Ride and Handling, Electronic6,8941,695
G92Performance Axle Ration/a22
KC4Engine Oil Cooler7,525110
MN66-Speed Manual Transmission5,8750
NN5California Emission Requirements3,050100
UJ6Low Tire Pressure Warning Indicator5,175325
UU8Stereo System, Delco-Bose3,786823
U1FStereo System with Compact Disc, Delco-Bose15,3451,219
V56Luggage Rack (convertible)886140
Z07Adjustable Suspension Package (coupe)7332,155
ZR1Special Performance Package2,04431,683
Serial Numbers
Coupe1G1YY238xM5100001 – 1G1YY238xM5118595
Convertible1G1YY338xM5100001 – 1G1YY338xM5118595
ZR-11G1YZ23JxM5800001 – 1G1YZ23JxM5802044

1991 Corvette Engine Options

Code | Engine | Horsepower | Compression | Trans. | Fuel Supply
ZTA L98 350-cid 245/250-hp V-8 10.0:1 Automatic Tuned Port Injection (TPI)
ZTB L98 350-cid 245/250-hp V-8 10.0:1 Manual Tuned Port Injection (TPI)
ZTC L98 350-cid 245/250-hp V-8 10.0:1 Automatic Tuned Port Injection (TPI)
ZTK LT5 350-cid 375-hp V-8 11.0:1 Manual Tuned Port Injection (TPI)

1991 Transmissions

Choice of a standard 4-speed automatic with overdrive or a no-cost-option 6-speed manual.

Gas Mileage

The 1991 Corvette hatchback, convertible, and ZR1 got a combined 17 miles per gallon and use regular (EPA city/highway MPG is 15/22 MPG) unleaded gas. It has a fuel tank capacity of 20 gallons, and its range is 300.0 miles in the city and 440.0 miles on the highway.

1991 C4 Corvette ZR-1 Values

As of June 2023, the appraised value of a pristine 1991 ZR-1 Corvette is $67,300. This figure refers to Condition #1 vehicles, which are deemed to be the most superior in terms of aesthetics and quality. They possess a magnificent visual presence with gleaming painted and chromed surfaces that resemble mirrors. Not a single speck of dust is allowed, and the materials used are always correct and immaculately installed. To summarise, Condition #1 vehicles are nothing short of “concours” quality.

The prices for cars in excellent, good, and fair condition respectively are $41,100, $20,600, and $16,700. Additional value can be obtained with the inclusion of a glass roof on the coupe (+$500) or a hard top on the convertible (+$1,000). If opting for an automatic transmission, expect a 10% deduction.

Value of the 1991 Corvette Coupe and Convertible

The base 1991 Corvette coupe ranges from $27,000 in #1 condition to $4,800 in #4 condition. The base coupe ranges from $32,600 in the #1 condition to $6,500 in the #4 condition. (These values are as of June 2023)

1991 Chevrolet Corvette Callaway Value

The 1991 Chevrolet Corvette was the last year of the B2K Callaway Twin Turbo Corvette option. This option was an additional $33,000. The cars were able to reach up to 450 horsepower in later models after being sent to Callaway Engineering. However, 1991 was a relatively low year in sales for the C4 Corvette, with just 20,639 units sold and only 71 Callaway Corvettes were produced. Because of this rarity, these models can command a high price and significant premium in value.

With only 27 models produced, the 1991 Chevrolet Corvette Callaway 2dr Coupe 8-cyl. 350cid/403hp Twin Turbo is an incredibly rare car. According to June 2023 data, it holds a value of #1 Concours at $55,800, #2 Excellent at $36,500, #3 Good at $26,800, and #4 Fair at $13,500.

The 1991 Chevrolet Corvette Callaway 2dr Convertible 8-cyl. 350cid/403hp Twin Turbo has a current estimated value of $64,800 for #1 Concours condition, $50,700 for #2 Excellent condition, and $31,100 for #3 Good condition. Of note, only 44 Callaway Convertibles were produced in the 1991 model year.

For four years, the Corvette offered the Regular Production Option B2K or the Callaway Twin Turbo conversions. On September 26, 1991, the 500th Twin Turbo conversion was completed by Callaway, and they continued on to make twelve more cars with special badging and options. These vehicles are better known as the Callaway 500 Series cars or Speedsters due to their custom open-body design by Paul Deutschman. These Callaway out-powered the ZR1 by boasting 400 horsepower and 580 lb-ft of torque in comparison to the ZR1’s 375 HP and 370 lb-ft. Even more impressively, the Speedsters reached a peak of 450 HP and 613 lb-ft of torque. Referred to as the “Mini Sledge” in reference to the famous Callaway Sledgehammer. It featured the Speedster body, O.Z. 3-piece racing wheels, and special 500 Series badges on the dash and driver’s side intercooler.

You might want to check out 1991 Corvette Callaway Speedster Brochure.

Some Trivia…

  • 1991 was the last year for the Callaway twin-turbo option, selling 62 units at $33,000 each.
  • 1991 introduced a new turbine wheel design that was used through the 1996 models with only minor differences in finish.
  • 1991 Corvettes got the rear-end look from the 1990 ZR-1, including the rectangular taillights. 1991 had restyled side louvers, and front cornering/parking lamps featured a wraparound design.
  • Further changes were made the following year, in 1991, including extra ZR-1 badges on the fenders and the introduction of Acceleration Slip Regulation (ASR) or traction control.
  • The 1991 Corvette convertible top is made of canvas or vinyl, depending on the color that was selected.
  • The optional black-finished luggage carrier is functional as well as good-looking.
  • 1991 was the 10th anniversary of Corvette production at the Bowling Green, KY plant
  • Last year for the Callaway B2K twin turbo.

1991 Corvette Brochure

1991 Corvette Brochure
1991 Corvette Brochure

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