GM SBC Block casting numbers

CASTING#.....SIZE...YEAR...MAIN CAP BOLTS....NOTES

140029.....350...80-84...2 330817.....400...72-80...2 355909.....262.....75....2 355909.....305...76-79...2 360851.....262...75-76...2.. V-8 361979.....305...77-79...2 or 4, some Canadian assembled some 4-bolt 366245.....350...78-79...4...Bowtie 366286...................4...Bowtie, siamesed,                              straight nodular iron main                               caps, 2-piece seal, 4.00-4.150"                              bores, 2.45" main journals 366298...................4.Bowtie,Aluminum,billet caps,two piece. 366299...................4...Bowtie, Aluminum, nodular                              iron splayed caps, wet sump,                              4.00" bore 389257.....302.....67....2 393288.....283...65-67...2 460703.....350.....78....4 460776.....305...78-79...2 460777.....305...78-79...2 460778.....305...78-79...2 or 4, some Canadian assembled some 4-bolt 471511.....267...79-82...2 3556519....283...58-61...2 3703524....265.....55....2...No oil filter 3720991....265...56-57...2 3731548....265...57......2...No side motor mounts 3731548....283...57......2...No side motor mounts 3737739....283...58-64...2 3756519....283...58-62...2 3782870....327...62-67...2 3789817....283...62-64...2 3789817....327...62-67...2 3789935....283...61-64...2 3790721....283...62-64...2...Chevy II recessed oil filter boss 3790721....327...65-66...2...Chevy II recessed oil filter boss 3791362....327...62-67...2...Chevy II recessed oil filter boss 3792563....327.....65....2 3792582....283...64-65...2 3794226....283...58-63...2 3794460....327...62-64...2 3830944....327.....63....2 3834810....283...64-66...2 3834812....283...62-63...2 3837739....283...58-62...2 3849852....283...57-66...2 3849935....283...65-67...2 3858174....327...64-67...2 3858180....327...64-67...2 3858618....350...68-76...2 3862194....283...65-67...2...Chevy II recessed oil filter boss 3862812....283...62-64...2 3892657....302.....67....2 3892657....327.....67....2 3892657....350.....67....2 3896944....283...66-67...2 3896948....283...66-67...2 3903352....327.....67....2 3914636....307.....68....2 3914638....327.....68....2 3914653....307...68-73...2 3914660....327.....68....2 3914678....302.....68....2 3914678....327.....68....2 3914678....350.....68....2 3931174....307.....68....2 3932371....307...69-73...2 3932373....307...68-73...2 3932386....302.....69....4 3932386....327.....69....2 3932386....350.....69....4 3932388....327.....69....2 3932388....350.....69....2 or 4 3933180....327...68-69...2 3951509....400...70-71...4 3951509....400...74-80...2 3951511....400...70-73...4...Some blocks had 2-bolt main caps 3956618....302.....69....4 3956618....327...68-69...2 3956618....350.....69....2 or 4 3956632....307.....69....2 3959512....327...62-67...2...Also used for some"CE"replacement blocks 3959532....283...64......2...Used for some "CE" replacement blocks 3970010....302.....69....4 3970010....327.....69....2 3970010....350...69-80...2 or 4 3970014....350...70-76...2 or 4 3970020....307...70-73...2 3970024....307...69-73...2 4715111....305.....80....2 6259425....350...69-76...2 10036033...350...........4...Goodwrench crate motor, 2-piece rear                              seal, "Hecho en Mexico" 10046164...305.....86....2 10051182.................2 or 4...Bowtie,3.75"-4.30", 1 or 2-piece 10051184.................4...Bowtie, 4.00"-4.155",1 or 2-piece 10054727...350...86-up...2 or 4...one piece rear seal, some "Canada" 10066036...350...........2 or 4...Target Master/Goodwrench, 2-piece                              seal, "Hecho en Mexico" 10066038...350.....92....4...Goodwrench crate motor, 2-piece rear                              seal, "Hecho en Mexico" 10090511...350.....90....2...LT-5, 375hp 10125327...350...92-up...2 or 4...Gen.II LT-1, reverse flow cooling 10125327...350...96-up...2 or 4...Gen.II LT-4, reverse flow cooling 10134996.................4...Bowtie, Aluminum, 4.125" bore                              2.65" main journals 10153558...350...91-92...4...LT-5, 375hp 10168588...265...94-96...2...L99,Gen.II,4.3 Liter V-8,reverse cooling 10199001...350...93-95...4...LT-5, 405hp 10243878...305...96-98...2...Vortec , roller cam, one-piece rear seal 10243880...350...95-00...2 or 4...Vortec ,Gen.I,roller cam,one piece 12550592...350...97-up...crossbolted block, Gen.III, "LS1", aluminum 12551354...364...02-up...crossbolted cast iron Gen. III, 6.0L, truck 12559378...350...99-up...crossbolted block, Gen.III, "LS1", aluminum 12559846...350...98-up...crossbolted block, Gen.III, "LS1", aluminum 12560621...350...98-up...crossbolted block, Gen.III, "LS1", aluminum 12560626...350...99-up...crossbolted block, Gen.III, "LS1", aluminum 12560629...350...99......crossbolted block, Gen.III, "LS1", aluminum 12561168...350...01-up...crossbolted block, Gen.III, "LS1", aluminum 12561358...293...99-up...Gen.III, Used with 4.8L motors 12561358...325...99-up...Gen.III, used with 5.3L motors 12562174...350...98-up...crossbolted block, Gen.III, "LS1", aluminum 12577396.........02-up...Gen.III, 4.8L or 5.3L, cast iron, truck 14010201...305...80-85...2 14010202...305...80-85...2 14010203...305...80-85...2 14010207...350...80-85...2 or 4 14010209...350...80-85...2 or 4 14010280...267...79-82...2 14011064...350...83......4 14011148...350...87-89.......Roller cam, one-piece rear seal 14016376...267...79-82...2 14016379...350...77-79...2 or 4 14016381...305...80-84...2 14016382...305...79-84...2 14016383...305...80-85...2 14079287...350...86-90 14088526...350...87-89.......Roller cam, one-piece rear seal 14088548...350...86-88...2 or 4 14088551...305...86-87...2...one-piece rear main seal 14093627...305...87-91...2...Roller cam, one-piece rear seal 14093638...350...87-95...2 or 4...Roller or flat tappet cam                                   one-piece rear seal 14094766...305...86-up...2...One-piece rear seal 14101147...305...85-up...2 14101148...350...87-90...4...One-piece rear seal 14102058...305...87-91...2...Roller cam, one-piece rear seal 22551656.................4...Rocket block, 4.00"-4.190" bores, 2.45" journal sizes, splayed caps, dry sump, 2-piece rear seal, 9.025" deck
              4.3L Block casting numbers
Block Casting #’s                                Description 
 
177........................85-86……..4.3L…2 Piece Rear Main Seal.
                                                             This Is The Early Style 
                                                              Block.
 
553,683………….86-88……..4.3L…1 Piece Rear Main Seal.
                                                              Non Roller Cam Engine.
 
011,867………….87-92……...4.3L…1 Piece Rear Main Seal.
                                                              Roller Cam Engine.
                                                              Has 2 Accessory
                                                              Mounting Holes
                                                              On Front Of Head.
 
535…...………....92-97………4.3L…Roller Cam Engine With 
                                                             Balance Shaft. Has A
                                                             10 Bolt Front Timing Cover.
                                                             No Fuel Pump Hole. Balance 
                                                             Shaft Casting Numbers Must
                                                             Be 10224542 Or 10172748.
                                                             Must Check Balance Shaft
                                                             Casting Number.
 
196,534……….95-99……….4.3L…Roller Cam Engine With
535,359                                               Balance Shaft. Has 6 Bolt
                                                            Front Timing Cover And
                                                            14 Bolt Oil Pan Rail.
 
756,073……….92-96………4.3L…Roller Cam Engine With 
   061                                                  Wide Intake. Head Casting 
                                                           Numbers 064, 209, 626,
                                                           Or 181 Last Three Digits.
                                                           4 Bolt Lifter Hold Down.
                                                            No Fuel Pump Hole.
 
090…………...96-99……….4.3L…Roller Cam Engine With
                                                           Balance Shaft. Has 6 Bolt
                                                           Timing Cover And 10 Bolt Oil
                                                           Pan Rail. Head Casting Number
                                                           772 Last Three Digits.
 
 
 
786,103………….87-92……….4.3L…Roller Cam Engine.
067,050                                                   Heads Have 3 Bolt Hole
                                                                Accessory Mounting On
                                                                The Front of Each Head.
                                                                Head Casting Numbers 
                                                                Are 786, 103, 067, And 
                                                                050. This Engine Can Be
                                                                Used To Replace The 
                                                                GM262LC.
 
196,534…………..92-97………4.3L…Roller Cam Engine With
359,535                                                  Balance Shaft. Balance Shaft
                                                              Casting Numbers Must Be
                                                              10224541 Or 12550286.
 
90M…………….00-05……….4.3L…Roller Cam With Balance
                                                              Shaft. Has Roller Rockers.
                                                              Head Casting Should Be 113.
                                                              10 Bolt Oil Pan.

        

  

                   Ford Block Casting Numbers

 

Ford Casting Numbers Explained

Casting numbers tell when a part was ORIGINALLY designed..

Example:

The breakdown of casting number C8OE-9430-D is easy using the charts below:

C = Decade of 1960
8 = Year of the decade (8th year of 1960), 1968
O = line / Manufacture code

E = Engine engineering department
9430 = Basic number for an exhaust manifold
N = Design change

Casting Number Breakdown Chart

Decade of Manufacture:
A = 1940
B = 1950
C = 1960
D = 1970
E = 1980

Year of Decade
The year of the decade is determined by adding a number (0-9) to the letter of the decade.

 Example: C6 would be 1966, D0 would be 1970, D1  1971

   

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