We have come to the Conclusion that its impossible to post all the differences for Big block casting numbers, and VIN #s. We are not saying we are giving up, but this book is a great way for you Corvette Restorer's trying to figure out what you got! We highly recommend the book listed here! If you cant wait for a book Click here to have us help you Decode your numbers!
The Essential Corvette Parts Reference,Corvette by the Numbers Corvette by the Numbers(TM) is the only authoritative reference for identifying and verifying, by casting number, the correct engine and drivetrain parts for your exact model Corvette. Lots of information on Big block casting numbers can be found in this book. The Chevrolet by the Numbers(TM) book series set the standard in Chevrolet parts identification. This same tradition has been continued with the release of Corvette by the Numbers(TM). In this new book Colvin has managed to go beyond the Chevy books by including information such as Delco starters and radios. LOF glass codes, and yearbyyear model changes. Restoring your Corvette to original factory specifications? You'll find the casting numbers that correspond to your car's Vehicle Identification Number to help you avoid buying the wrong parts. Buying a Corvette? You'll find how to tell if it really is a 'matching numbers' car. Interested in Corvette history? There are fascinating stories that explain everything from midyear running changes to production idiosyncrasies. Whether you are new to the Corvette hobby or a 15year Bloomington Gold judge, you can learn something new from Corvette by the Numbers(TM).
Casting Number/Date For Original Big Block Chevy V8 Blocks Codes
3855961 396 2 Bolt 
3869942 427 
3902406
396 2 Bolt 
3935440 396 
3955272 396 
3969854
402 
3968512 427/454 
3968512 427/454 
3999289
454 
361959 454 
C 7 5 
B 1 6 
H 1 6 
B 4 8 
I 26 8 
L 8 9 
L 6 8 
F 29 70 
A 19 73 
B 10 77 
C 23 5 
B 1 6 
I 22 6 
B 21 8 
J 3 8 
A 26 70 
C 7 9 
G 9 70 
B 1 73 
B 28 77 
D 24 5 
B 2 6 
J 20 6 
D 24 8 
J 13 8 
B 4 70 
D 21 9 
J 3 71 
B 7 73 
C 30 77 
F 25 5 
C 8 6 
A 10 7 
D 24 8 
J 18 8 
B 10 70 
E 5 9 
3999290 402 2 Bolt 
C 5 73 
E 23 78 
H 18 5 
C 20 6 
A 10 7 
F 5 8 
K 11 8 
B 27 70 
E 14 9 
C 9 73 
G 24 78 

H 27 5 
E 14 6 
C 28 7 
F 7 8 
K 16 8 
D 21 70 
H 9 9 
E 18 71 
H 8 73 
I 2 78 
I 21 5 
E 27 6 
3916323 396 2 Bolt 
F 24 8 
K 21 8 
D 23 70 
H 26 9 
F 18 71 
I 7 73 
I 8 78 
J 23 5 
F 17 6 
F 28 8 
K 27 8 
D 30 70 
H 27 9 
H 7 71 
I 7 73 
K 20 78 

J 28 5 
D 31 6 
F 16 7 
G 2 8 
A 24 9 
E 27 70 
H 28 9 
I 13 71 
J 12 73 
14015445
454 2 Bolt 
K 17 5 
3904351 427 
I 20 7 
G 9 8 
C 24 9 
F 3 70 
I 2 9 
I 16 71 
J 18 73 

K 21 5 
K 20 7 
G 11 8 
C 27 9 
F 30 70 
I 8 9 
I 27 71 
L 4 73 
H 2 8 

L 18 5 
G 1 6 
A 18 8 
3935439 427 
D 2 9 
H 5 70 
I 8 9 
K 1 71 
A 8 74 
10114184 427 HD 4 Bolt 
L 18 5 
H 8 6 
B 1 8 
D 3 9 
H 10 70 
J 15 9 
L 16 71 
A 10 74 

B 17 6 
I 14 6 
3916321 427 
D 11 8 
D 8 9 
L 5 70 
J 31 9 
A 26 72 
A 10 74 
G 30 1 
C 16 6 
I 21 6 
E 13 8 
E 11 9 
L 29 70 
K 10 9 
B 26 72 
A 17 74 
D 29 2 

D 22 6 
I 28 6 
H 18 7 
E 22 8 
E 18 9 
L 24 70 
K 11 9 
D 13 72 
F 3 74 
F 10 2 
E 18 6 
I 30 6 
H 18 7 
G 18 8 
E 29 9 
A 9 71 
K 14 9 
D 20 72 
I 13 74 

3855962 396 4 Bolt 
J 7 6 
I 11 7 
3955170 427 2 Bolt 
3969854 402 
A 21 71 
L 2 9 
3999289 454 
I 27 74 

J 13 6 
I 12 7 
A 23 71 
L 2 9 
361959
454 

B 20 5 
J 20 6 
I 18 7 
I 23 8 
I 22 9 
C 5 71 
L 10 9 
E 21 71 

C 17 5 
B 8 7 
I 25 67 
3955270 427 4 Bolt 
J 11 9 
C 3 71 
C 4 70 
F 29 71 
F 4 75 

J 1 5 
B 28 7 
K 14 7 
K 4 9 
C 8 71 
C 5 70 
H 31 71 
H 27 75 

3869942 427 
C 8 7 
K 14 7 
I 4 8 
K 5 9 
C 11 71 
C 25 70 
J 4 71 
L 18 75 

C 17 7 
K 15 7 
3955272 396 
K 7 9 
C 26 71 
C 31 70 
B 23 72 
A 18 76 

I 2 5 
C 21 7 
K 16 7 
K 11 9 
G 19 71 
D 6 70 
F 29 72 
C 10 76 

I 21 5 
D 17 7 
L 8 67 
H 3 8 
K 11 9 
L 2 71 
D 7 70 
F 30 72 
D 4 76 

I 22 5 
D 18 7 
L 27 7 
I 18 8 
K 12 9 
H 7 72 
F 29 76 

L 30 5 
I 23 8 
L 3 9 
A 10 73 
I 13 76 
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