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The 1985 Chevrolet Corvette

1985 Blue Corvette Coupe

The 1985 Corvette replaced the 205 horsepower L83 engine with the L98 230 horsepower engine with Bosch tuned port fuel injection. Torque also increased from 290 lb-ft of torque to 330 lb-ft. Because of critizism about the harsh ride of the car the spring rates were reduced 26% in front and 25% in the rear. A "Tuned Port Injection" badge appeared on the side of the Vette to go along with the new engine. The red and silver paint colors were changed slightly to make them more attractive. The Z5l handling package now included 9.5-inch wheels all around, with Delco-Bilstein gas-charged shock absorbers, thicker stabilizer bars and a heavy-duty cooling system. The instrument cluster was updated to make it more readable.

Production Options and Build Statistics

Total 1985 Corvettes Built - 39,729

Serial numbers: 1G1YY07x7F5100001 to 1G1YY07x7F5139729

The "Vehicle Identification Number" (also VIN or serial number) is stamped on a plate on the inner vertical surface of the left windshield pillar visible through the windshield.
Position Character Description
1 1 US Built
2 G General Motors Product
3 1 Chevrolet Motor Division Vehicle
4 Y Type of restraint system
5 Y Corvette
6 & 7 07 Body style number: two-door hatchback coupe
8 8 5.7-liter Tuned-Port-Injection (TPI) Chevrolet V8
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
10 F The model year F=1985
11 5 Bowling Green, Kentucky
12-17 100001 and up Production Sequence

Engine Serial Number

1985 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.

Code Engine Horsepower Compression Transmission Fuel Supply Extra features
ZDF L98 350-cid 230-hp V-8 9.0:1 THM automatic tuned port injection ;
ZJB L98 350-cid 230-hp V-8 9.0:1 manual tuned port injection ;
ZJC L98 350-cid 230-hp V-8 9.0:1 THM automatic tuned port injection for export
ZJJ L98 350-cid 230-hp V-8 9.0:1 THM automatic tuned port injection engine oil cooler
ZJK L98 350-cid 230-hp V-8 9.0:1 manual tuned port injection engine oil cooler

Production Options

RPO Description Price Production
1YY07 Base Coupe $24,403 39,729
AG9 Power Driver Seat $215 37,856
AQ9 Leather Sport Seats $1,025 N/A
AR9 Base Leather Seats $400 N/A
N/A Cloth Sport Seats $625 5,661
AU3 Power Door Locks $170 38,294
CC3 Removable Transparent Roof Panel $595 28,143
D84 Two-Tone Paint $428 6,033
FG3 Delco Bilstein Shock Absorbers $189 9,333
G92 Performance Axle Ratio $22 5,447
K34 Cruise Control $185 38,369
MM4 4-spd, Manual Trans. $0.00 9,576
UL5 Radio Delete $-256 172
UN8 AM-FM Stereo, CB $215 16
UU8 Delco Bose Stereo System $895 35,998
V01 Heavy Duty Cooling $225 17,539
Z49 Canadian Base Equipment N/A N/A
Z51 Performance Handling Pkg. $470 14,802
Z6A Rear Window/Side Mirror Defoggers $160 37,720
AX4 European Belt System N/A N/A
A26 Glass - European Glazing N/A N/A
C49 Electric Rear Defogger N/A N/A
DD9 Electric Outside Rear View Mirrors N/A N/A
G95 Axle Economy Ratio N/A N/A
K05 Engine Block Heater ; ;
L98 Engine, 5.7L V8, TPI N/A N/A
MX0 Auto. Transmission w/ Overdrive N/A N/A
NN5 California Emission Override N/A N/A
QZD P255/50VR16, Steel Belt Radial Tires N/A N/A
T72 Left Rule of Road Headlamps N/A N/A
T84 Left Rule of Road Headlamps N/A N/A
T89 Tail/Stop Lamp Assembly, European N/A N/A
UD2 Alarm/Vehicle Speed (105 KH) N/A N/A
UD6 Alarm - Exhaust Temperature N/A N/A
UK1 Japanese Radio Frequency N/A N/A
UL2 European Radio Frequency N/A N/A
UM6 Electric Tuned AM-FM Stereo w/ Cassette N/A N/A
U03 Horn Noise Regulator N/A N/A
U18 Export Speedometer N/A N/A
VD1 European Modifications N/A N/A
VE1 Japanese Modifications N/A N/A
V08 Heavy Duty Cooling N/A N/A
V70 Front Tow Hook - Export N/A N/A

Color Options for 1985

Interior options for exterior colors are suggested by Chevrolet. Any combination could be ordered.
RPO Exterior Interior Production
13 Silver Metallic GR-MG 1,752
18 Medium Gray Metallic GR-MG 2,519
20 Light Blue Metallic MB 1,021
23 Medium Blue Metallic MB 2,041
40 White CA-GR-S-MB-MG 4,455
41 Black CA-GR-S-MG 7,603
53 Gold Metallic S 1,411
63 Light Bronze Metallic BR 1,440
66 Dark Bronze Metallic BR 1,030
81 Bright Red CA-GR-S-MG 10,424
13/18 Silver/Gray GR-MG 2,170
20/23 Light Blue/Medium Blue MB 1,470
63/66 Light Bronze/Dark Bronze BR 2,393
Color Codes: BR=Bronze, CA=Carmine, GR=Graphite, MB=Medium Blue, MG=Medium Gray, S=Saddle<
The last three RPOs have two paint colors in each. These are two-tone paint jobs that have one color on the top of the car and the other on the bottom.

Interior Colors

RPO Color Production
12C Graphite Cloth 818
12V Graphite Sport Seat Cloth 1,763
15C Medium Gray Cloth 571
15V Medium Gray Sport Seat Cloth 1,045
28C Medium Blue Cloth 957
28V Medium Blue Sport Seat Cloth 1,365
62C Saddle Cloth 349
62V Saddle Sport Seat Cloth 607
65C Bronze Cloth 417
65V Bronze Sport Seat Cloth 881
122 Graphite Leather 9,346
152 Medium Gray Leather 3,579
282 Medium Blue Leather 2,121
622 Saddle Leather 3,759
652 Bronze Leather 3,878
742 Carmine Leather 8,272

1985 Corvette Specifications

Mechanical Dimensions

Feature Coupe
Wheelbase 96.2 inches (2.443 m)
Overall Length 176.5 inches (4.483 m)
Overall Width 71.0 inches (1.803 m)
Overall Height 46.4 inches (1.179 m)
Front Tread 59.6 inches (1.514 m)
Rear Tread 60.4 inches (1.534 m)
Standard Wheel Size 16 x 8.5 inches
Standard Tires P255/50VR-16 SBR
Steering Power Rack and Pinion
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
Brakes Four-wheel power disc
Body Construction Unibody with partial front frame
Fuel tank 20 US Gal (16.7 Imp Gal) (76 liters)

Engine Specifications

Engine Base Engine RPO L98
Type V-8, 90-degree Overhead valve
Block Cast Iron
Displacement 350 cid (5.7 liters)
Bore & Stroke 4.00" x 3.48"
Compression Ratio 9.0:1
Brake Horsepower 230 @ 4000
Torque 330 lb-ft @ 3200
Main Bearing Five
Valve Lifters Hydraulic
Fuel Supply Tuned-port injection (TPI) system

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