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1984 Tech	1985 Tech	1986 Tech	1987 Tech	1988 Tech
1989 Tech	1990 Tech	1991 Tech	1992 Tech	1993 Tech
1994 Tech	1995 Tech	1996 Tech	Stickers & Calendars	Home

1991 Technical Information

Vehicle Identification Number

VIN Range:
1G1YY2386M5100001 – 1G1YY2386M5118595 - Corvette Coupe & Convertible
1G1YZ23J6M5800001 – 1G1YZ23J6M5802044 - ZR-1

Position	Definition	Character(s)	Description
1	Country of Origin	1	United States
2	Manufacturer	G	General Motors
3	Make	1	Chevrolet
4-5	Body Series	YY/YZ	Corvette/ZR-1
6	Body Style	2/3	Hatchback Coupe/Convertible
1	Restraint System	3	Passive Restraint System
8	Engine	8/J	L98/LT5
9	Check Number	-	Check Digit (1-9)
10	Model Year	M	1991
11	Assembly Plant	5	Bowling Green, KY
12-17	Plant Sequence Number		VIN Sequence

Partial VIN Location - Inner vertical surface of the left windshield pillar, visible from the outside through the windshield.

See Tech - Index

Solid Paint/Interior Application

Exterior Paint Color	Color Code	Sold	Interior Color
Exterior Paint Color	Color Code	Sold	Blue	Black	Gray	Red	Saddle
White	10	4,305	x	x	x	x	x
Steel Blue Metallic	25	835	x	x
Yellow	35	650		x	x		x
Black	41	3,909	x	x	x	x	x
Turquoise Metallic	42	1,621		x			x
Dark Red Metallic	75	1,311		x			x
Quasar Blue Metallic	80	1,038		x			x
Bright Red	81	5,318		x	x	x	x
Polo Green Metallic	91	1,230		x			x
Charcoal Metallic	96	417		x	x		x

Suggested interiors shown. Other combinations were possible.

Convertible Top Selector

Exterior Paint Color	Color Code	Interior Color
Exterior Paint Color	Color Code	Blue	Black	Gray	Red	Saddle
White	10	10T / 29T	10T / 41T	10T / 41T	10T / 19T	19T / 68T
Steel Blue Metallic	25	10T / 29T / 41T	10T / 41T
Yellow	35		10T / 41T	10T / 41T		10T / 68T
Black	41	41T	10T 41T	10T / 41T	41T	41T / 68T
Turquoise Metallic	72		41T			68T
Dark Red Metallic	75		10T / 41T			19T / 68T
Bright Red	81		10T / 41T	10T / 41T	10T / 41T	41T / 68T
Polo Green Metallic	91		41T / 68T			41T / 68T
Charcoal Metallic	96		10T / 41T	10T / 41T		41T / 68T

White - 10T / Black - 41T - Blue 29T - Saddle - 68T

Power Teams

	A	B	C	D	E
Engine Code	L98	L98	L98	L98	LT5
Displacement	5.7 (350)	5.7 (350)	5.7 (350)	5.7 (350)	5.7 (350)
Induction System	Multi-Port Fuel Injection	Multi-Port Fuel Injection	Multi-Port Fuel Injection	Multi-Port Fuel Injection	Multi-Port Fuel Injection
Compression Ratio	10.0:1	10.0:1	10.0:1	10.0:1	11/0:1
Horsepower/SAE/RPM	250/186 @ 4400	245/183 @ 4000	250/186 @ 4400	245/183 @ 4000	280/375 @ 5800
Torque (lb. ft.)/RPM	350 @ 3200	345 @ 3200	350 @ 3200	345 @ 3200	370 @ 4800
Transmission/Transaxle	ML9 Manual 6-speed	MD6 Automatic 4-speed	MD6 Automatic 4-speed	MD6 Automatic 4-speed	ML9 Manual 6-speed
Axle Ratio	3.45:1	2.59:1	3.07:1	2.73:1	3.45:1

Series Availability

Model	Code	Standard	Optional
Coupe	1YY07	B	A & C
Convertible	1YY67	B	A & D
Coupe (ZR-1)	1YZ07	E

1984 Tech	1985 Tech	1986 Tech	1987 Tech	1988 Tech
1989 Tech	1990 Tech	1991 Tech	1992 Tech	1993 Tech
1994 Tech	1995 Tech	1996 Tech	Stickers & Calendars	Home

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This website is designed and maintained by Webs by Dale™ (WBD). This website was created as an informational forum only and the information is updated as needed. Some mistakes can be made, but I make every attempt to keep the details accurate and up to date. If you find an error, please use the email address on my Contact page and describe the issue. WBD shall not be held liable for any loss resulting from the use of the information contained on this website. This website is the sole property of WBD. Design, layout and website photographic images were all created by WBD or submitted by readers and are not to be copied or distributed without express consent from WBD in writing. Use of WBD name, logo and identity is strictly prohibited by law.

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VIN search disclaimer
This Corvette website is not designed to help you locate a car you owned 20-30 years ago. To my knowledge there is no known database of a car's VIN and its past/current owner. Such a public database would be a gross invasion of privacy.

Data presented here has been gathered from various websites and GM's "Information Kits." I' have found several differences on numerous websites, particularly in sales quantity and pricing. I have used (what I consider) three of the more reputable websites for information. Hopefully you will find the layout and how the data are presented acceptable.

1953-1972 Corvette Production Numbers