1990 Corvette Identification Numbers

Below is a listing of common identification numbers and ways of identifying a 1990 Corvette L98 and ZR-1.

VIN Tag Information
Base:  1G1YY238XL5100001 - 1G1YY238XL5120597
ZR-1: 1G1YZ23JXL5800001 - 1G1YZ23JXL5803049
Digit Definition
1st Nation of Origin:  1 = U.S.
2nd Manufacturer:  G = GM
3rd Make and Type:  1 = Chevrolet Passenger
4th Carline:  Y = Corvette
5th Carline/Series:  Y = Corvette, Z = ZR-1
6th Body Type:  2 = Coupe Hatchback, 3 = Convertible
7th Restraint System:  1 = Manual Belts, 3 = Manual Belts/Driver Air Bag
8th Engine:  8 = L98, J = LT5
9th Check digit to verify VIN correctly recorded.
10th Model Year:  L = 1990
11th Assembly Plant:  5 = Bowling Green, KY
Last 6 digits Production Number starting with 100001 and up for the base model and 800001 and up for the ZR-1.

Engine Suffix ID Numbers
ZSA: 350ci, 240hp / 250hp, (automatic transmission)
ZSB: 350ci, 240hp / 250hp, (manual transmission, oil cooler)
ZSC: 350ci, 240hp / 250hp, (automatic transmission, oil cooler)
ZSD: 350ci, 375hp, (air conditioning)
ZSH: 350ci, 375hp, (electronic climate control)
Callaway (RPO B2K): Chevrolet engine coding was replaced as follows:
1st two digits:  model year
Next three digits:  Callaway sequence number
Last four digits:  last four digits of vehicle identification number

Block ID Numbers
10090511: 350ci, 375hp
14093638: 350ci, 245hp / 250hp

Head ID Numbers
10088113: 350ci, 245hp / 250hp
10106178: 350ci, 375hp (right hand)
10106179: 350ci, 375hp (left hand)

Build Sticker:

In 1990 Corvettes, a build sticker can be found on the underside of the center console lid:

1990 Corvette Build Sticker showing RPO codes.