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The 1990 Chevrolet Corvette

1990 Red Convertible Corvette

1990 was the year for the eagerly anticipated "King of the Hill" Corvette ZR-1. The ZR-1 was the highest cost production car in the GM inventory. The ZR-1 engine is a Lotus-designed 32-valve, dual-overhead-cam, 350-cubic inch (5.7-liter) V-8 with 16 fuel injectors (8 primary, 8 secondary), built by Mercury Marine in Oklahoma. ZR-1 also included new body styling and wider rear to cover the massive 315/35ZR-17 rear tires. The FX3 Selective Ride Adjustment was a standard feature on ZR-1's as well as the 6-speed manual gearbox. The ZR-1 rear body styling included a convex rear with rectangular lights, the standard Corvette has a concave rear with round lights. The engine oil cooler was now standard along with 17" wheels. ABS-II anti-lock braking system was also standard. A drivers side airbag is now standard equipment on all 1990 Vettes.

Production Options and Build Statistics

Total 1990 Corvettes Built - 26,412

Total 1990 Coupes - 16,663
Total 1990 Convertibles - 9,749
Total 1990 ZR-1s - 3,049

Serial Numbers
Coupe1G1YY238xL5100001 - 1G1YY238xL5120597
Convertible1G1YY338xL5100001 - 1G1YY338xL5120597
ZR-11G1YZ23JxL5800001 - 1G1YZ23JxL5803049

Serial Number Decoder

PositionCharacterDescription
11US built
2GGeneral Motors product
31Chevrolet Motor Division vehicle
4-5YYBasic Corvette
4-5YZCorvette ZR-1
62 or 3Body style number
2 = Two door hatchback style 07, 08, 77, or 87
3 = Two door convertible style 67
71 or 21=Manual seat belts
3=Manual belts with driver-inflatable restraint system
4=Automatic belts
88L98 5.7-liter Tuned-Port-Injection Chevrolet or GM of Canada V8
8JLT5 - 5.7-liter TPI V-8
9?A check digit that calculates the characters in the serial number and gives it a single digit code and can be used to verify that the serial number is legitimate
10LThe model year L=1990
115Bowling Green, KY
12-17100001 and upProduction Sequence
12-17800001 and upProduction sequence for ZR-1s

Engine Serial Number Decoder

1990 Corvette engines have the last six digits of the VIN stamped on the block after the engine number. The date code the engine was manufactured was also cast into the block. The engine serial number includes a production sequence number starting with 0001001 and one of the suffixes below.

CodeEngineHorsepowerCompressionTransmissionFuel SupplyExtra Features
ZSAL98 350-cid245/250-hp V-89.5:1THM automatic
ZSBL98 350-cid245/250-hp V-89.5:1ManualTuned Port InjectionEngine Oil Cooler
ZSCL98 350-cid245/250-hp V-89.5:1THM AutomaticTuned Port InjectionEngine Oil Cooler
ZSDLT5 350-cid375-hp V-811.0:1ManualTuned Port InjectionElectronic Air Conditioning

Production Options

RPO
Description
Cost
Total
Prod.
%
1YY07Base Coupe$31,979.00 16,016 60.6%
1YY67Base Convertible$37,264.00 7,630 28.9%
AC1Power Passenger Seat$270.00 20,419 77.3%
AC3Power Driver Seat$270.00 23,109 87.5%
AQ9Leather Sport Seats$1,050.00 11,457 43.4%
AR9Base Leather Seats$425.00 11,649 44.1%
B2KCallaway Twin Turbo$26,895.00 58 0.2%
CC2Auxiliary Hardtop (Convertible)$1,995.00 2,371 9.0%
C2LDual Removable Roof Panels$915.00 6,422 24.3%
24SRemovable Roof Panel, blue tint$615.00 7,852 29.7%
64SRemovable Roof Panel, bronze tint$615.00 4,340 16.4%
C68Electronic Air Conditioning$180.00 22,497 85.2%
FX3Selective Ride and Handling System$1,695.00 7,576 28.7%
G92Performance Axle Ratio, 3.07:1$22.00 9,362 35.4%
K05Engine Block Heater$20.00 1,585 6.0%
KC4Engine Oil Cooler$110.00 16,220 61.4%
MN66-spd, Manual Trans.$0.00 8,100 30.7%
NN5California Emission Requirements$100.00 4,035 15.3%
UJ6Low Tire Pressure Warning System$325.00 8,432 31.9%
UU8Delco Bose Stereo System$823.00 6,401 24.2%
U1FDelco Bose CD Stereo System$1,219.00 15,716 59.5%
V56Luggage Rack (Convertible)$140.00 1,284 4.9%
Z51Performance Handling Package (Coupe)$460.00 5,446 20.6%
ZR1Special Performance Handling Package (Coupe)$27,016.00 3,049 11.5%
AJ3Inflatable Restraint SystemN/A N/A N/A
CC3Removable Plastic Roof PanelN/A N/A N/A
CF7Non-Transparent Removable Roof PanelN/A N/A N/A
C60Manaul Control Air ConditioningN/A N/A N/A
DL8Twin Electric Remote Heated Sport MirrorsN/A N/A N/A
D3XSpeedometer Driven Gear (25513049)N/A N/A N/A
D4DSpeedometer Driven Gear (25513047)N/A N/A N/A
D7BSpeedometer Driven Gear (25513050)N/A N/A N/A
D7CSpeedometer Driven Gear (25513043)N/A N/A N/A
D74Illuminated Mirror, Inside Vanity VisorN/A N/A N/A
D9ASpeedometer Sensor (25007224)N/A N/A N/A
D9BSpeedometer Sensor (25007308)N/A N/A N/A
FE1Soft Ride SuspensionN/A N/A N/A
FE7Heavy Duty SuspensionN/A N/A N/A
GH03.54 Rear Axle RatioN/A N/A N/A
GM12.59 Rear Axle RatioN/A N/A N/A
GM33.45 Rear Axle RatioN/A N/A N/A
GT73.33 Rear Axle RatioN/A N/A N/A
GU22.73 Rear Axle RatioN/A N/A N/A
G443.07 Rear Axle RatioN/A N/A N/A
G878.5 - Inch Ring GearN/A N/A N/A
JL9Front and Rear Anti-lock BrakesN/A N/A N/A
J55Heavy Duty BrakesN/A N/A N/A
K09120 Amp GeneratorN/A N/A N/A
K68105 Amp GeneratorN/A N/A N/A
L985.7 Liter, V-8 Engine, TPIN/A N/A N/A
LT55.7 Liter, V-8 Engine, MPFI, DOHCN/A N/A N/A
MD84-speed Automatic Transmission (4L60)N/A N/A N/A
ML96-speed Manual Transmisson (ZF)N/A N/A N/A
NK4Steering Wheel, Sport LeatherN/A N/A N/A
QA1Aluminum Wheel, 17x9.5N/A N/A N/A
QA2Aluminum Wheels, 17x9.5 Front, 17x11 RearN/A N/A N/A
T61Daytime Running LampsN/A N/A N/A
T93Special Tail and Stop LampsN/A N/A N/A
UM6Electronically Tuned Stereo with Cassette/ClockN/A N/A N/A
U19Instrument Cluster, Kilometers and MilesN/A N/A N/A
UX0Delco Bose 6-Speaker Stereo SystemN/A N/A N/A
U19Instrument Cluster, Kilometers and MilesN/A N/A N/A
U52Electronic Instrument ClusterN/A N/A N/A
XAUFront Tire, P274/40ZR17N/A N/A N/A
YAURear Tire: P275/40ZR17N/A N/A N/A
YBERear Tire: P315/35ZR17N/A N/A N/A

Color Options for 1990

Interior options for exterior colors are suggested by Chevrolet. Other combinations could be ordered.
RPO
Color
Cost
Soft Top Color
Interior Color
WA #
Total
Prod.
%
10White$0.00B-S-WB-BK-G-R-SWA9567 4,872 18.4%
25Steel Blue Metallic$0.00BK-WB-BKWA9080 813 3.1%
41Black$0.00BK-WB-BK-G-RWA8555 4,759 18.0%
42Turquoise Metallic$0.00BK-SBK-SWA9543 589 2.2%
53Competition Yellow$0.00BK-S-WBK-G-SWA9504 278 1.1%
68Dark Red Metallic$0.00BK-S-WBK-SWA9239 2,353 8.9%
80Quasar Blue Metallic$0.00BK-S-WBK-G-R-SWA9544 474 1.8%
81Bright Red$0.00BK-S-WBK-G-R-SWA8774 6,956 26.3%
91Polo Green Metallic$0.00BK-SBK-SWA9529 1,674 6.3%
96Charcoal Metallic$0.00BK-SBK-GWA9192 878 3.3%
Color Codes: B=Blue, BK=Black, C=Cloth, G=Gray, L=Leather, R=Red, S=Saddle, W=White

Interior Colors

RPO
Color
Cost
Base
Sport
Total
Prod.
%
19CBlack Cloth$0.00398N/A 398 1.5%
60CSaddle Cloth$0.00142N/A 142 0.5%
193Black Leather$0.004,7014,977 9,678 36.6%
223Blue Leather$0.00395341 736 2.8%
603Saddle Leather$0.002,0501,373 3,423 13.0%
733Red Leather$0.003,0703,397 6,467 24.5%
903Gray Leather$0.001,4331,369 2,802 10.6%


Convertible Top Colors

RPOColorProduction%
N/ABlack4,16142.7%
N/ASaddle1,28413.2%
N/AWhite2,20522.6%


1990 Corvette Specifications

Mechanical Dimensions

FeatureCoupeConvertibleZR-1
Wheelbase96.2 inches (2.443 m)96.2 inches (2.443 m)96.2 inches (2.443 m)
Overall length176.5 inches (4.483 m)176.5 inches (4.483 m)177.4 inches (4.506 m)
Overall width71.0 inches (1.803 m)71.0 inches (1.803 m)74.0 inches (1.880 m)
Overall height46.7 inches (1.186 m)46.7 inches (1.186 m)
Front tread59.6 inches (1.514 m)59.6 inches (1.514 m)59.6 inches (1.514 m)
Rear tread60.4 inches (1.534 m)60.4 inches (1.534 m)61.9 inches (1.572 m)
Front TiresP275/40ZR-17 Goodyear Eagle GTP275/40ZR-17 Goodyear Eagle GTP275/40ZR-17 Goodyear Eagle GT
Rear TiresP275/40ZR-17 Goodyear Eagle GTP275/40ZR-17 Goodyear Eagle GTP315/35ZR-17 Goodyear Eagle GT
Steeringrack and pinion (power assisted)rack and pinion (power assisted)rack and pinion (power assisted)
Front suspensionSingle fiberglass composite monoleaf transverse spring with unequal-length aluminum control arms and stabilizer barSingle fiberglass composite monoleaf transverse spring with unequal-length aluminum control arms and stabilizer barSingle fiberglass composite monoleaf transverse spring with unequal-length aluminum control arms and stabilizer bar
Rear suspensionFully independent five-link system with transverse fiberglass single-leaf springs, aluminum upper/lower trailing links and strut-rod tie-rod assemblyFully independent five-link system with transverse fiberglass single-leaf springs, aluminum upper/lower trailing links and strut-rod tie-rod assemblyFully independent five-link system with transverse fiberglass single-leaf springs, aluminum upper/lower trailing links and strut-rod tie-rod assembly
BrakesFour-wheel power discFour-wheel power discFour-wheel power disc
Body constructionUnibody with partial front frameUnibody with partial front frameUnibody with partial front frame
Fuel tank20 US Gal (16.7 Imp Gal) (76 liters)20 US Gal (16.7 Imp Gal) (76 liters)20 US Gal (16.7 Imp Gal) (76 liters)


Engine Specifications

FeatureBase Engine RPO L98ZR-1 Engine RPO LT5
TypeV-8, 90-degree Overhead valveV-8, 90-degree Overhead valve with 4 valves per cylinder and 4 overhead camshafts
BlockCast Iron with Aluminum Cylinder HeadsAluminum
Displacement350 cid (5.7 liters)350 cid (5.7 liters)
Bore & Stroke4.00" x 3.48"4.00" x 3.48"
Compression Ratio9.5:111.0:1
Brake horsepower245 @ 4000 (250-hp for hatchbacks using 3.07:1 rear axle due to use of low-restriction mufflers with this option combination only)375 @ 5800 rpm
Torque345 lb-ft @ 3200370 lb-ft @ 5600
Main bearingFiveFive
Valve liftersHydraulicHydraulic
Fuel supplyTuned-port induction (TPI) systemTuned-port induction (TPI) system

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