Chevrolet Crankshaft Casting Number Reference
Small Block Chevy
Casting #                 CID             Material             Comments
1130              327               Steel            Large Journal     3.25
1181              305-350       Cast             Large Journal     3.48
2680              327               Steel            Small Journal      3.25            
2690              350               Steel            ?
3279              302                Steel             Large Journal     3.00    68-69 Z-28
4577              327               Steel            Small Journal     3.25
4672              327               Steel            Large Journal     3.25
310514          350               Cast                                      3.48
330550          350               Steel                                      3.48
354431          262               Cast             Large Journal    3.10
3727449        283               Steel              Small Journal     3.00
3729449        265               Steel             Small Journal     3.00
3734627        327               Steel             Small Journal     3.25
3735236        265-283       Steel             Small Journal     3.00
3735263        283                Steel              Small Journal     3.00
3782680        327               Steel             Small Journal     3.25
3814671        327               Steel             Small Journal     3.25
3815822        265-302         Steel             Small Journal    3.00   
3835236        283               Steel             Small Journal     3.00
3836266        283               Steel             Small Journal     3.00
3849847        283               Both             Small Journal     3.00
3876764        283               Both             Small Journal     3.00
3876768        283               Steel             Small Journal     3.00
3884577        327               Steel             Small Journal     3.25
3892690        350               Steel                                      3.48
3911001        307-327         Cast             Large Journal    3.25
3911011        307-327         Cast             Large Journal    3.25
3914672        327               Steel             Large Journal     3.25   
3923279        302               Steel             Large Journal     3.00
3932442        305-350         Cast             Large Journal    3.48
3941174        307-327         Cast             Large Journal    3.25   
3941178        302               Steel             Large Journal     3.00
3941182        350               Steel             Large Journal     3.48
3941188        350               Steel                                       3.48
3949847        283               Both             Small Journal      3.00
3951130        327               Steel             Large Journal     3.25
3951529        400               Cast             Large Journal     3.76
Small block 1 pcs. rear seal  below
14088526      305               Cast             Large Journal     3.48     86-up
14088532      350               Forged         Large Journal      3.48     86-88 Truck
14088535      305-350       Cast             Large Journal      3.48    86-up
14088552      350               Forged        Large Journal       3.48     86-88

Big Block Chevy
3521              454             Forged         70-76         4.00
6223              427             Forged         66-69
6223              400-402     Forged         70-76
6223              396             Forged         68-76
6223              366             Forged         66-85
7115              366                                66-68
7115              396                                65-69
7115              400-402                        70-72
7115              427                                66-69
7116              454             Forged         70-88
353039          454             Cast             70-88         4.00
3732692        348                                58
3732223        409                                 62-65
3733226        348                                 58
3741640        348                                 59-61                     Std. Trans
3741642        348                                 59-61                     Auto. Trans
3788072        409                                 61
3795589        409                                 61-62
3804816        366                                 66-76
3804816        396                                 68-72
3804816        400-402                         70-72
3804816        427                                 68-76
3815822        348                                 58-61                     Std. Trans
3824553        348                                 58-61                     Std. Trans
3829027        409                                 63
3837466        409             Steel              63                          Z-11
3838416        409                                 64-65
3856223        396                                 65-69
3856223        402                                 70-71
3863144        366                                 68-85
3863144        396                                 68-72
3863144        400-402                         70-72
3874874        366                                 68-85
3874874        396-402                         70-76
3874874        427                                 66-69
3882842        366, 396, 427
3882849        366, 396, 427
3904815        366, 396                         65-72
3904815        427                                 66-69
3904815        400, 402                         70-76
3963524        454             Steel             70-72
3967416        454                                 70-71
3967463        454             Steel             70-72
3874874        427                                 66-69

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