1990 Corvette

1993 C4 Chevrolet Corvette Model Guide

Specifications, VIN, Options, Performance, Recalls, & More

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1993 Corvette Overview

When Harley Earl first envisioned his two-seat roadster in 1953, it is unlikely that even he would have been able to fathom the long-term commercial success the Corvette would achieve.  Both on the road and on the racetrack, the Corvette had demonstrated again and again that it could compete with some of the fiercest automotive competitors from around the world.

Model: 1993 Corvette
Generation: C4 Corvette
Type: 2 Door Coupe, 2 Door Convertible
Available Colors: Arctic White, Black, Bright Aqua Metallic, Polo Green II Metallic, Competition Yellow, Ruby Red, Torch Red, Black Rose Metallic, Dark Red Metallic, Quasar Blue Metallic
Engine: 350CI, 300 Horsepower, Multi-Port Fuel Injected LT1 V8 Small Block Engine.
VIN: 1G1YY23PXP5100001 – 1G1YY23PXP5121142 (Corvette Coupe & Convertible)
1G1YZ23J3P5800001 – 1G1YZ23J3P5800448 (ZR-1 Corvette)
Transmission: 4-speed automatic (standard), 6 speed manual (optional)
Original Price: Orig. Base Price: $34,595.00 (Coupe), $41,195.00 (Convertible)
Units Produced: 21,590
Specs: 1993 Corvette Spec List

From its earliest days racing against the Porsche 356 at the 24 Hours of LeMans to competing at some of the most grueling road courses of the day, the Corvette had become a world leader that had celebrated decades long victories in sales, showmanship and performance.  Now, as the Corvette prepared to turn 40, Chevrolet decided to honor the milestone by releasing a special edition Corvette to pay homage to the American legend.

When Harley Earl first envisioned his two-seat roadster in 1953, it is unlikely that even he would have been able to fathom the long term commercial success the Corvette would achieve.

Both on the road and on the racetrack, the Corvette had demonstrated again and again that it could compete with some of the fiercest automotive competitors from around the world.

From its earliest days racing against the Porsche 356 at the 24 Hours of LeMans to competing at some of the most grueling road courses of the day, the Corvette had become a world leader that had celebrated decades long victories in sales, showmanship and performance.

Now, as the Corvette prepared to turn 40, Chevrolet decided to honor the milestone by releasing a special edition Corvette to pay homage to the American legend.

While the official 40th Anniversary Edition Corvette was ordered by many Corvette purists to celebrate the momentous occasion, there was another Corvette package offered in 1993 that catered more to the performance fanatics.

Florida-based Greenwood Automotive Performance unveiled a bolstered Corvette coupe.  Named only with the distinction “G572” (so named for the size of the engine), the Corvette featured functional aero body panels and a reinforced chassis that were specifically modified to support the massive torque put on them by the car’s 575 horsepower engine.

Under the car’s hood lived a 9.4-Liter (572 cubic inch) Chevy V-8 that was mated to a GM four-speed automatic transmission.  When this special edition Corvette was run with the throttle full open, the Corvette could accelerate from zero-to-60 miles per hour in just 3.4 seconds, and best a quarter mile at just 11.5 seconds at a speed of 135 miles per hour.

Additionally, when running fully open, the Corvette could hit and maintain a speed of 218 miles per hour.  Of course, achieving that level of incredible power has always been an expensive undertaking, as was the case with the G572, which carried a price tag of $179,333.

G572 Greenwood Corvette.
G572 Greenwood Corvette.

Sadly, the base model coupes received virtually no cosmetic upkeep from the previous model year – but with just two exceptions:  First, while the wheels on the Corvette included the same rotary cut pattern as that of the 1992 Corvette, the wheels still reflected a different physical appearance because they were machined differently than the wheels found on the 1992 Corvette.

DID YOU KNOW: The 1993 ZR-1 Chevy Corvette received a huge power boost jumping 15 horsepower from 385hp to 405hp. Torque was also improved from 370 lb-ft to 385 lb-ft. This was accomplished through porting changes on the head and valvetrain, an electric EGR valve improving emissions, platinum tipped spark plugs, and four bolt main bearing caps.

Additionally, the 1993 Corvette would be the last model year that consumers could order cloth seats as an option, and it was a sound decision on the part of GM to eliminate this RPO from all future models, especially given the fact that only 426 Corvettes were ordered with that option.

Finally, the size of the front wheels on the base model Corvette coupe and convertible were reduced in size from 9.5×17 to 8.5×17 and the corresponding front tire sizes were reduced from P275/40ZR17 to P255/45ZR17.  Similarly, the rear tire size was increased from P275/40ZR17 to P285/40ZR17.  For Corvettes that included RPO Z07, 9.5×17 wheels and P275/40ZR17 tires were used on both the front and rear.

Good Year Eagle GS-C Tires
Good Year Eagle GS-C Tires were introduced in 1993.

As in years past, the tires were courtesy of Good Year and were directional, asymmetric Eagle GS-C’s that were utilized exclusively on the Corvette during their first year of production.

While new, these tires did utilize a similar tread pattern as in earlier models, though the tires designed for the 1993 Corvette were better equipped to handle the cornering stresses that occurred on both the inner and outer edges of the tire.

Having specially balanced tires was a tremendous improvement to the Corvette’s drivability, though given the unique nature of each tire, owners had to be cautious about replacement given that no tire was interchangeable with another.

Mechanically the 1993 Corvette Coupe also remained virtually unchanged, although some small, but significant improvements had been made to make the Corvette continually more competitive on the racetrack.

While the LT-1’s horsepower remained at 300, several modifications were made to make the engine quieter.  First, the heat shield design was changed from a single piece stamping to a two-piece sandwich type shield that was self-damping.

Second, the LT-1 camshaft exhaust lobe profile was modified to reduce the exhaust valve closing velocity.  Additionally, a shortening of the inlet stroke duration allowed a longer exhaust stroke duration with no increase in overlap area between the two strokes.  A side benefit of this modification resulted in a small, but significant, increase in torque from 330 to 340 lbs/ft of torque at 3,600rpms.

Third, new thermostat polyester valve covers replaced the 19841992 magnesium covers.  These covers were isolated from the heads by a gasket in the normal location, but also by gaskets under the heads of the mounting hardware.

The PKE Keyless Entry System.
The PKE Keyless Entry System.

Perhaps one of the most notable improvements to the 1993 Corvette was the introduction of a passive keyless entry (PKE) system.   Unlike other keyless entry systems, which required the vehicle owner/operator to unlock the vehicle by pressing a “LOCK/UNLOCK” button on a small transmitter, the PKE system automatically communicated with the Corvette when the driver was in the general proximity of the vehicle.

The battery operated transmitter would simply transmit a unique code which could be picked up by the Corvette through one of two antennas – in coupes, the antennas were located in the driver door and the rear deck lid,  – in convertibles, the antennas were located in both the driver and passenger doors.

When a driver approached the Corvette, the PKE would unlock the doors, turn on the interior lights, and deactivate the theft deterrent system.  The PKE system could be turned off completely, and could also be programmed to lock or unlock the driver’s door only, or both the driver and passenger doors.  Coupes that were equipped with the PKE system included an extra button on the transmitter that would unlock the rear hatch.

1993 ZR-1 Corvette.
1993 ZR-1 Corvette.

The LT5 engine (featured in the ZR-1 Corvette) received a minor boost in power.  For 1993, the ZR-1 Corvette’s horsepower was increased from 375hp to 405hp.   Given the overall lack of ZR-1 sales, many questioned the decision to improve upon the performance of the LT5 engine at all, though most critics agreed that doing so would again increase the performance gap between the ZR-1 and the base coupe, putting the ZR-1 back in a class of its own.  This power increase was achieved as the result of a series of changes to the LT5’s cylinder heads and valvetrain.  Additional modifications were made to the LT5 as well including the introduction of four bolt main bearings, platinum tipped sparkplugs, an electrical, linear EGR (Exhaust Gas Recirculation) system for improved emission control and the requirement of using Mobil 1 synthetic oil as the only spec compliant engine lubricant.  These improvements would help propel the ZR-1 to set a new top speed record of 179 miles per hour, which was faster than any other unmolested Corvette ever.

Despite the absence of notable, physical changes to the design of the car, the overall sales numbers of the 1993 Corvette actually increased over previous years.   A total of 21,590 Corvettes were manufactured and sold, marking 1993 the first model year in four years to actually witness an increase in its numbers.  Additionally, the ZR-1 Corvette received the accolades of being the winner of the top speed category of Car & Driver’s “Ten Best” issue (January, 1994).  Despite this, the ZR-1’s numbers continued to head south, with just 448 units being produced that year.

See full 1993 C4 Corvette Image Gallery

 

1993 Corvette Specifications

See the complete breakdown of technical specifications for the 1993 Corvette, including engine, suspension, brakes, body dimensions, and power.

Read more: 1993 Corvette Specifications.

1993 Corvette Pricing & Options

CODE: DESCRIPTION: QUANTITY: RETAIL PRICE:
1YY07 Base Corvette Sport Coupe 15,898 $34,595.00
1YY67 Base Corvette Convertible 5,692 $41,195.00
AC1 Power Passenger Seat 8,509 $475.00
AC3 Power Driver Seat 766 $555.00
AQ9 Sport Seats, leather 11,267 $1,100.00
AQ9 Sport Seats, White Leather 622 $1,180.00
AR9 Base Seats, leather 18,067 $305.00
AR9 Base Seats, White Leather 20,626 $305.00
CC2 Auxillary Hardtop (convertible) 976 $1,995.00
C2L Dual Removable Roof Panels (coupe) 4,204 $950.00
24S Removable Roof Panel, blue tint (coupe) 6,203 $650.00
64S Removable Roof Panel, bronze tint (coupe) 4,288 $650.00
C68 Electronic Air Conditioning Control 19,550 $205.00
FX3 Selective Ride and Handling, electronic 5,740 $1,695.00
G92 Performance Axle Ratio 2,630 $50.00
MN6 6-Speed Manual Transmission 5,330 $0.00
NN5 California Emission Requirements 2,401 $100.00
UJ6 Low Tire Pressure Warning Indicator 3,353 $325.00
UU8 Stereo System, Delco-Bose 2,685 $823.00
U1F Stereo System With CD, Delco-Bose 16,794 $1,219.00
V56 Luggage Rack (convertible) 765 $140.00
Z07 Adjustable Suspension Package (coupe) 824 $2,045.00
Z25 40th Anniversary Package 6,749 $1,455.00
ZR1 Special Performance Package  (coupe) 448 $31,683.00

Read more: 1993 Corvette pricing and factory options.

1993 Corvette Vehicle Identification Numbers (VIN)

For all 1993 Corvettes, the Vehicle Identification Number was stamped on a plate on the inner vertical surface of the left windshield pillar visible through the windshield. Read more: 1993 Corvette VINs.

1993 Corvette Recalls, Technical Service Bulletins, & Maintenance Schedule

The information contained on this page is for reference only.  The time and mileage intervals for each of the maintenance items included on this page were established by General Motors with the introduction of the 1993 Chevy Corvette.  Please note that the original service intervals may not reflect the standard service intervals used in current automobile engines.

Read more: 1993 Corvette Recalls, Technical Service Bulletins, & Maintenance Schedule.

1993 Corvette Common Issues

The following list of common issues is intended for individual reference only, and may not reflect the specific issues of every 1993 Corvette.  This information comes from a variety of sources including the NHTSA Defects Reports pages.  While the intent of this page is to identify the common issues pertaining to the 1993 Corvette, it is not an all-inclusive list and should be used for reference only.

Read more: 1993 Corvette Common Issues.

1993 Corvette Dealers Sales Brochure & Service Manual

See the original 1993 Corvette sales brochure and service manual here.