CHEVROLET, BUICK, GMC, OLDSMOBILE

6-CYLINDER BLOCK CASTING NUMBERS

Revised July 28 2003

These numbers have been taken personally by Lou, c1937@sirius.com. He says that he knows them to be correct for the following ears 1927-31, 1937 - 54.; Other numbers I have copied from reliable sources but have put question marks (??=??) when the numbers were duplicated or did not make sense. Example: 1951; 52 could not use the same block because motor mounts were different
In addition please refer for further inline casting numbers to: Inliners.Org

 
"Cyl" is "Cylinder"
"C.I.D." is "Cubic Inch Displacement"
"#" is "Number"
"mains" is "Main Bearings"
KEY TO LIST [left to right]:
Engine Casting #, Make, Year, [# cylinder, C.I.D., # mains] Possible Stamped Serial; Numbers

14001133 Chevrolet 76-80 292 =3D 7
1782594 Chev 36 ? 37
1970 Chevrolet 64-67 292 =3D 7
2135412 GMC 46-54 200, 270 =3D 4
2193980 GMC 52-54 302
2324002 GMC 55-62 248, 302
2324003 GMC 55-63 270
2324004 GMC 55-62 302
2404929 GMC 55-63 270 =3D 4m
289890 Chevrolet 63-77 292 =3D 7
327773 Chev 490; Superior 1922-24 171-4cyl
328518 Chevrolet 73-77 292 =3D 7
328572 Chevrolet 73-76 250 =3D 7
328575 Chev/Buick/Olds/ Pontiac 68-84 250 =3D 7
328576 Chev/Buick/Pontiac 68-76 250 =3D 7
328578 Chevrolet 73-84 292 =3D 7
328880 Chevrolet 63-77 292 =3D 7
329990 Chevrolet 63-77 292 =3D7
348532 Chev 28 171 =96 4cyl; =3D3
348709 Chev 27 171 =96 4cyl; =3D3
352194 Chevrolet 73-84 292 =3D7
358825 Chevrolet 66-76 250 =3D 7
3629703 Chevrolet 50-52 235 =3D 4
364909 Chevrolet/Olds 75-79 292 =3D 7
3660439; Chev 41 235 =3D 4m
366855 Chev/Buick/Olds/ Pontiac 66-84 250 =3D 7
3692703 Chevrolet 50-51 235 =3D 4; PG HDA, HDM , HEA, HEM; JDA=,
JDM, JEA, J EM
3692708 Chevrolet (51?);; 50-52;235
3692713 Chevrolet (50?);; 50-52 Truck; 235
3693374 Chevrolet; (46?); 42-49 235
3701481 Chevrolet 54 235 TorF54L-Z
3701483 Chev 53 235 LDA, LDM, LEA, LEM,
3701946 Chevrolet 53 3-spd 235 dipper LAA (?); ditto above.
3702436 (part #?) Chev 54-55 261
3703414 Chevrolet 54-56(??) 261
37127 Chevrolet 73-76 250 =3D 7
3733340 Chevrolet 55-57 261
3733414 Chev 55-57; 261
3733813 Chevrolet 58 261
3733946 Chevrolet 54-55 235
3733949 Chevrolet 55 1st series 235
3733950 Chevrolet 54-55 261
3737012 Chevrolet 55-57 261
3738307 Chevrolet 58-60 truck 235
3738365 Chevrolet 60-62 261
3738476 Chevrolet 58-62 235
3738813 Chevrolet 55-59 261
3739365 Chevrolet 58-62(59?) 261
3739716 Chevrolet 58-62(60) 235
3759365 Chevrolet 59 261
3764476 Chevrolet 58-62 235
3768925; Chev =94 NPT; 55 - + 261
3769 Chev 58 =96 62 235
3769716 Chevrolet 60 235
3769717 Chevrolet 59-62 261
3769925 Chevrolet 58-62 261
377127 Chevrolet/Olds/ Pontiac 73-79 250 =3D 7
377129 Chevrolet 73-84 292 =3D 7
3773949 Chevrolet 54 235
3777178 Buick 68-76 250 =3D 7
3782856 Chevrolet 62-67 194 =3D 7
3782858 Chevrolet 62-67 194 =3D 7
378307 Chevrolet 60-62 235
3783949 Chevrolet 53-54 235
3788378 Chevrolet 62-74 292 =3D 7
3788406 Chevrolet 62-69 230 =3D 7
3788514 Chevrolet 62-70 153 =964cyl =3D5
3788813 Chevrolet 55-59(58?) 261
3789404 Chevrolet 63-76 292 =3D 7
3789412 Chevrolet 63-66 292 =3D 7
3789716 Chevrolet 63-72 292 =3D 7
3792852 GMC 62-66 194 =3D 7
3792858 Chevrolet 62-67 194 =3D 7
3821970 GMC 67-72 292 =3D 7
3833057 Chevrolet 62-70 194 =3D 7
3833067 Chevrolet 63-70 194 =3D 7
3833340 Chevrolet 55-57 261
383340 Chevrolet 55-57 261
3835253 Chevrolet 48 =96 49 216 FA, GA
3835309 Chevrolet 48 - 49 235 FDA, FDM, FEA, FEM, GDA, GDM, GEA, GEM
3835335 Chevrolet 235 EDA, EDM, EEA, EEM
3835353 Chevrolet 48-52 216
3835363 Chevrolet 54 235
3835374 Chevrolet 42-49 235
3835491 Chevrolet 54 235
3835497 Chevrolet ton ? 50 - 51 216 AHCA-BJCM HAA-JCQ
3835527 Chevrolet 51 216
3835692 Chevrolet 52 235 KDA, KDM, KEA, KEM
3835794 Chevrolet 52-53 216
3835846 Chevrolet 53 235
3835849 Chevrolet & frac12;ton ? 52 -53 216 AKCA-BLCP, KAA-LCQ
3835894 Chevrolet 53 216
3835911 Chevrolet 54-55 235
3835917 Chevrolet 54-55 235
3835946 Chevrolet 53 235
3835949 Chevrolet 54 235
3836012 Chevrolet 55-57 261
3836223 Chevrolet 55-57 235
3836233 Chevrolet 55-4/1/56 235
3836340 Chevrolet 57 261
3836386 Chevrolet 55-57 235
3837004 Chevrolet T56X 55-57 235-261
3837012 Chevrolet 55-57 261; ????; Also 42-51 216 ????
3838004 Chevrolet 55-57 235
3843363 Chevrolet 53-55 235
3850817 Chevrolet 62-78 230-250 =3D 7
3851656 Chevrolet 63-72 292 =3D 7
3851659 Chevrolet 63-76 292 =3D 7
3851859 Chevrolet 63-72 292 =3D 7
3854036 Chev/Olds/Pontiac 62-76 230-250 =3D 7
3855914 Chevrolet 63-66 292 =3D 7
3855987 Chevrolet 63-71 292 =3D 7
3855991 Chevrolet 63-70 230 =3D 7
3856233 Chevrolet 55 235
3858190 Chevrolet 54-55 235
386855 Chevrolet 74-77 250 =3D 7
3877178 Buick/Olds/Chev/;;;;;; Pont/GMC
62-78 230-250 =3D 7
3879875 Chevrolet 62-70 194 =3D 7
3886061 Chevrolet 63-66 292 =3D 7
3890011 Buick/Chev/Olds /Pontiac 68-72 250 =3D 7
3890013 Chevrolet 68-72 250 =3D 7
3892858 Chevrolet 64-67 194 =3D 7
389770 Chevrolet 42-51 216
3897702 Chevrolet 42-53 216
3921770 Chevrolet 66-76 292 =3D 7
3921967 Chevrolet 64-69 230 =3D 7
3921968 Chevrolet/Olds 64-76 230-250 =3D 7
3921970 Chevrolet 63-76 292 =3D 7
40050 Chev; FA Early 1916-19 224 =96 4cyl
43950 Chev; FB 1919-22 224 =96 4cyl
45834;; Chev; 490 1922; 171 =96 4cyl
473180 Chev Standard 1933 182 3 main Head =3D 600569
473741 Chev Standard 1934 182 3 main Head =3D 473740
5845363 Chev 1954 235
6107326 GMC 39 =96 54; 228
6107328 GMC 39 =96 55 248
743 Chev 490 1916 =96 17 171-4cyl
828575 Chevrolet 72-77 250 =3D 7main
835501 Chev 29 =96 30 194 =3D 3main
836010 Chev 1935 & 36 206 =3D 3main 35=3D837230, 837981
836409 Chev 31 194 =3D 3main
836573 Chev 32 194 =3D 3main Head =3D 836718
837231 Chev Master 1933 & 34 206 =3D 3 main 33=3D836961, 34=3D8372=30
837751 Chevrolet 42-49 235; dipper
838101 Chev 37 216 =3D 4 main 1 =96 1187821
838710 Chev 38 216 =3D 4m 1187822 =96 1915446;; B1 - B10502
838941 Chev 39 216 =3D 4m 1915447 =96 2697267 B10503 - B105461
838751 Chev 42 235 =3D 4m BG, BL
839132 Chev 40 216 =3D 4m 2697268 =96 3665902; B105462 - B221935
839400 Chev 41 216 =3D 4m AA1001 - AA1163720 AC1001 - AC19549
839751 Chev 42 =96 46 235 =3D 4m BG, BL, DDA, DDM, DEA, DEM
839770 Chevrolet (46-49?)42;216 2AA, 2AC, BA DA, EA
8397715 Chevrolet 42-49 235
839910 Chevrolet 42-51 216
839931 Chevrolet 42-49 235
8692703(?) Chev PG 50 235
8994256 Chevrolet 64-77 292 =3D 7
93403466 Chevrolet 75-83 250 =3D 7
93403467 Chevrolet 75-84 292 =3D 7
93406004 Chevrolet 75-84 292 =3D 7
967 Chev 490 1918 - 21 171-4cyl
9787437 Pontiac 66-67 230 =3D 7
9790043 Pontiac 68-69 250 =3D 7
9795066 Pontiac 68-69 250 =3D 7
9890043 Pontiac 68-69 250 =3D 7

Thanks to Lou for the above.