Vehicle Identification Number information and other identification numbers for the 1968 Corvette including engine block, head id, casting numbers and more.
VIN Tag Information | |
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194378S400001 - 194378S428566 (coupe) 194678S400001 - 194678S428566 (convertible) |
|
Digit | Definition |
1st | Division: 1 = Chevrolet |
2nd / 3rd | Series: 94 = Corvette |
4th/5th | Body Style: 37 = 2-door coupe, 67 = 2-door convertible |
6th | Model Year: 8 = 1968 |
7th | Assembly Plant: S = St. Louis, MO. |
Last 6 digits | Production Number starting with 400001 - 428566 |
Engine Suffix ID Numbers | |
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HE: | 327ci, 300hp (manual transmission) |
HO: | 327ci, 300hp (automatic transmission) |
HP: | 327ci, 350hp (air conditioning, manual transmission, power steering) |
HT: | 327ci, 350hp (manual transmission) |
IL: | 427ci, 390hp (manual transmission) |
IM: | 427ci, 400hp (manual transmission) |
IO: | 427ci, 400hp (automatic transmission) |
IQ: | 427ci, 390hp (automatic transmission) |
IR: | 427ci, 435hp (manual transmission) |
IT: | 427ci, 430hp (L88) (aluminum heads, manual transmission) |
IU: | 427ci, 435hp (aluminum heads, manual transmission) |
Block ID Numbers | |
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3914678: | 327ci, 300hp, 350hp |
3916321: | 427ci, 390hp, 400hp, 430hp, 435hp |
3935439: | 427ci, 430hp, 435hp |
Head ID Numbers | |
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3917215: | 427ci, 390hp, 400hp |
3917291: | 327ci, 300hp, 350hp |
3917292: | 327ci, 350hp |
3919840: | 427ci, 435hp (iron heads) |
3919842: | 427ci, 430hp, 435hp (aluminum heads) |
Cylinder Head Casting Number: Cylinder Head Casting Date: |
Cylinder Head Casting Number Month Codes (1st Digit) | ||
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A - January | E - May | I - September |
B - February | F - June | J - October |
C - March | G - July | K - November |
D - April | H - August | L - December |
Two main plants were casting Chevrolet engine parts during 1968: Flint, Michigan and Tonawanda, New York.
Example: Flint Cylinder Head Casting Number - D 19 9
Example: Tonawanda Cylinder Head Casting Number - D 19 59
Carburetor ID Numbers | |
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Rochester Q-jet #7028207: | 327ci, 300hp (manual transmission) |
Rochester Q-jet #7028208: | 327ci, 300hp (automatic transmission) |
Rochester Q-jet #7028209: | 427ci, 390hp (manual transmission) |
Rochester Q-jet #7028216: | 427ci, 390hp (automatic transmission) |
Rochester Q-jet #7028219: | 327ci, 350hp (manual transmission) |
Holley R3659A #3902353: | 427ci, 400hp, 435hp (front carburetor, rear carburetor) |
Holley R4054A #3925519: | 427ci, 430hp (L88) |
Holley R4055A #3925517: | 427ci, 400hp (center carburetor, manual transmission), 435hp (center carburetor, first design) |
Holley R4055-1A #3940929: | 427ci, 400hp (center carburetor, manual transmission), 435hp (center carburetor, second design) |
Holley R4056A #3902516: | 427ci, 400hp (automatic transmission, center carburetor, first design) |
Holley R4056-1A #3940930: | 427ci, 400hp (automatic transmission, center carburetor, second design) |
Distributor ID Numbers | |
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1111194: | 327ci, 300hp |
1111293: | 427ci, 390hp, 400hp |
1111294: | 427ci, 390hp, 400hp (transistor ignition) |
1111295: | 427ci, 430hp (transistor ignition) |
1111296: | 427ci, 435hp (transistor ignition) |
1111438: | 327ci, 350hp |
1111441: | 327ci, 350hp (first design, transistor ignition) |
1111475: | 327ci, 350hp (second design, transistor ignition) |
Alternator ID Numbers | |
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1100693: | 300hp, 350hp, 390hp, 400hp |
1100696: | 350hp, 390hp, 400hp, 430hp, 435hp (transistor ignition) |
1100750: | All engines equipped witih air conditioning. |
Transmission ID Numbers | |
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S | Saginaw 3-Speed |
P | Muncie 4-Speed |
K | Turbo Hydra-Matic 400, Corvette 327 Engines |
L | Turbo Hydra-Matic 400, Corvette 427 Engines |