31.084 Corvettes were built in 1998. 19.235 Coupes and 11.849 Convertibles
The Vehicle Identification Numbers, VIN were 1G1YY32G2W5100001 through 1G1YY32G2W5131069
Eighth digit is the engine code: G=350 CID - 345 HP LS-1
For Convertibles, sixth digit is a 3 and a 2 for Coupes
Ninth digit is a check code and varies

Engine Tech Spec
Cubic Inch 350
Engine Type 5.7 Liter (LS1) V8 SFI
Engine Block Cast Aluminum
Cylinder Heads Cast Aluminum
HP @ RPM 345 @ 5600
Torque  RPM 350 @ 4400
Comp. Ratio 10.1:1
Bore & Stroke 3.90 x 3.62
Fuel Induction Sequential Fuel Injection (SFI)
In Manifold Overhead (OHV) intake manifold
Valve Lifters Hydraulic Roller
Exhaust Aluminized stainless steel

Block Cast Number
12550592 350 CID - 345 HP

Head Cast Number
12558806 350 CID - 345 HP

Engine Identification
350 Cubic Inch Engine CODE
345 HP with Automatic transmission ZZC
345 HP with Manual transmission ZZD

Rear Axle Ratio
Ratio and Type CODE
NIY NIY
NIY NIY

Transmission Gear ratios

Models

Corvette Hardtop

Corvette Coupe/Corvette Convertible

Corvette Coupe/Corvette Convertible

Transmission

6-speed manual(std.)

4-speed elec. automatic with overdrive(std.)

6-Speed Manual(opt.)

Layout

RWD, mounted ahead of rear axle

RWD, mounted ahead of rear axle

RWD, mounted ahead of rear axle

1st

2.66

3.06

2.66

2nd

1.78

1.63

1.78

3rd

1.30

1.00

1.30

4th

1.00

0.70

1.00

5th

0.74

0.74

6th

0.50

0.50

Reverse

2.90

2.29

2.90

Final drive ratios

3.42

2.731

3.42

1:3.15 with optional Performance Ratio.


Original Colors
Color CODE
Arctic White 10
Light Pewter Metallic 11
Sebring Silver Metallic 13
Pace Car Purple 21
Nassau Blue Metallic 23
Navy Blue Metallic 28
Black 41
Light Carmine Red Metallic 53
Aztec Gold 58
Torch Red 70
Fairway Green Metallic 87
Medium Purple Pearl Metallic 95

Tommy Ledberg