|
| 1970 Corvette Identification |
| VIN Tag Information |
194370S400001 - 194370S417316 (coupe)
194670S400001 - 194670S417316 (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: 0 = 1970 |
| 7th |
Assembly Plant: S = St. Louis, MO. |
| Last 6 digits |
Production Number starting with 400001 - 417316 |
| Engine Suffix ID Numbers |
| CGW: |
454ci, 390hp (automatic transmission) |
| CRJ: |
454ci, 390hp (automatic transmission, transistor ignition) |
| CRI: |
454ci, 390hp (manual transmission, transistor ignition) |
| CTD: |
350ci, 300hp (manual transmission) |
| CTG: |
350ci, 300hp (automatic transmission) |
| CTH: |
350ci, 350hp (manual transmission) |
| CTJ: |
350ci, 350hp (air conditioning, manual transmission) |
| CTK: |
350ci, 370hp (manual transmission, transistor ignition) |
| CTL: |
350ci, 300hp (manual transmission) |
| CTM: |
350ci, 300hp (automatic transmission) |
| CTN: |
350ci, 350hp (manual transmission) |
| CTO: |
350ci, 350hp (air conditioning, manual transmission) |
| CTP: |
350ci, 350hp (manual transmission, transistor ignition) |
| CTQ: |
350ci, 350hp (air conditioning, manual transmission, transistor ignition) |
| CTR: |
350ci, 370hp (manual transmission, transistor ignition) |
| CTU: |
350ci, 370hp (manual transmission, transistor ignition) |
| CTV: |
350ci, 370hp (ZR1) (manual transmission) |
| CZU: |
454ci, 390hp (manual transmission) |
| Note: Some early 1970 engines may have 1969 engine codes. |
| Block ID Numbers |
| 3970010: |
350ci, 300hp, 350hp, 370hp |
| 3963512: |
454ci, 390hp |
| Head ID Numbers |
| 3927186: |
350ci, 300hp, 350hp, 370hp |
| 3927187: |
350ci, 350hp |
| 3964290: |
454ci, 390hp |
| 3973414: |
350ci, 370hp |
|
Cylinder Head Casting Number:
The cylinder head casting number is usually found on top of the cylinder
head in between two valves and the rocker arm studs.
Cylinder Head Casting Date:
The cylinder head casting date is usually found adjacent to the cylinder
head casting number. The casting date code is an alphanumeric sequenced number. The first digit is usually a letter which
specifies the month that the block was cast. Some casting dates have been found with all digits being numbers, the first of
which corresponds to the month.
| Cylinder Head Casting Number Month Codes (1st Digit) |
| 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 1970: Flint, Michigan and Tonawanda, New York.
Example: Flint Cylinder Head Casting Number - D 19 9
D: Month = April
19: Casting Day = 19th
9: Casting Year = 1959
Example: Tonawanda Cylinder Head Casting Number - D 19 59
D: Month = April
19: Casting Day = 19th
59: Casting Year = 1959
|
| Carburetor ID Numbers |
| Rochester Q-jet #7040202: |
350ci, 300hp (automatic transmission, first design) |
| Rochester Q-jet #7040203: |
350ci, 300hp (manual transmission, first design) |
| Rochester Q-jet #7040204: |
454ci, 390hp (automatic transmission) |
| Rochester Q-jet #7040205: |
454ci, 390hp (manual transmission) |
| Rochester Q-jet #7040207: |
350ci, 350hp (manual transmission) |
| Rochester Q-jet #7040212: |
350ci, 300hp (automatic transmission, second design) |
| Rochester Q-jet #7040213: |
350ci, 300hp (manual transmission, second design) |
| Rochester Q-jet #7040502: |
350ci, 300hp (automatic transmission, evaporative emission controls) |
| Rochester Q-jet #7040503: |
350ci, 300hp (automatic transmission, evaporative emission controls, first design) |
| Rochester Q-jet #7040504: |
454ci, 390hp (automatic transmission, evaporative emission controls) |
| Rochester Q-jet #7040505: |
454ci, 390hp (manual transmission, evaporative emission controls) |
| Rochester Q-jet #7040507: |
350ci, 350hp (manual transmission, evaporative emission controls) |
| Rochester Q-jet #7040513: |
350ci, 300hp (manual transmission, evaporative emission controls, second design) |
| Holley R4489A #3972123: |
350ci, 370hp (manual transmission, evaporative emission controls) |
| Holley R4555A #3972121: |
350ci, 370hp (manual transmission) |
| Distributor ID Numbers |
| 1111464: |
454ci, 390hp |
| 1111490: |
350ci, 300hp (early production) |
| 1111491: |
350ci, 370hp (transistor ignition) |
| 1111493: |
350ci, 350hp (early production) |
| 1112020: |
350ci, 300hp (transistor ignition) |
| 1112021: |
350ci, 350hp |
| Alternator ID Numbers |
| 1100884: |
350ci, 370hp (or all air conditioning) |
| 1100900: |
350ci - 350h, 454ci - 390hp |
| 1100901: |
350ci, 300hp |
|
