| VIN Tag Information | |
|---|---|
| Base: 1G1YY238XM5100001 - 1G1YY238XM5118595 ZR-1: 1G1YZ23JXM5800001 - 1G1YZ23JXM5802044 |
|
| 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: M = 1991 |
| 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 | |
|---|---|
| ZTA: | 350ci, 245hp / 250hp, (automatic transmission) |
| ZTB: | 350ci, 245hp / 250hp, (manual transmission, oil cooler) |
| ZTC: | 350ci, 245hp / 250hp, (automatic transmission, oil cooler) |
| ZTK: | 350ci, 375hp |
| 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 | |
|---|---|
| 10153558: | 350ci, 375hp |
| 14093638: | 350ci, 245hp / 250hp |
| Head ID Numbers | |
|---|---|
| 10088113: | 350ci, 245hp / 250hp |
| 10174389: | 350ci, 375hp (left hand) |
| 10174390: | 350ci, 375hp (right hand) |