Chev 4 cyl casting numbers
Note: I have tried all the tricks in my bag and can't get this to maintain chart grids, so read it carefully and you will figure it out. Credit is given to Dave Taylor of South Africa for providing this data and permission to post. CYLINDER BLOCK CASTING NUMBER IDENTIFICATION
Year Model Casting No Part No
24 327772
25 Series K Before February 334653
25 Series K After February 344624
26 Series V & X 345505
27 348709
28 348532
CYLINDER HEAD CASTING NUMBER IDENTIFICATION
Year Model Casting No Part No
17-19 DV8 338048
22 FB Three Port 381099
16-21 333776
21-24 Aug1921 … Nov 1924 327773
24-26 Dec 1924 … March 1926 344128
26-27 Mar 1926 … June 1927 Single Port 1 ½ inch Valves 345453
27 June 1927 onwards Single Port AA LM 1 21/32" Valves 346886
28 Two Port 348540
36-51 With fan (for low speed driving) 602253 604486
48-52 With fan (5” dia. pulley) 1911990
TRANSMISSION CASE,
Year Model Casting No Part No
16-21 14181
25 590204
26 590219
28 590321(F 13 8)
590328
590279 (I 8) 353300
TRANSMISSION CASE COVER
Year Model Casting No Part No
16-21 14182
25 590061
27-28 590281 590034
TRANSMISSION U-JOINT CASE,
Year Model Casting No Part No
16-21
25
27-28 590182
TRANSMISSION SPIGOT SHAFT PLATE
Year Model Casting No Part No
16-21
25
27-28 590211
DIFFERENTIAL PINION,
Year Model Casting No Part No
16-24 Chevrolet, 490, Superior, Passenger & 1/2 ton truck ratio 33-9
ratio 34-9
25-28 Chev. K, V, X (67mm Dia) Ratio 42-11 344025
29 Passenger & 1/2 ton PU, A-6 (70mm Dia) Ratio 42-11 355414
DIFFERENTIAL CARRIER ASSEMBLY,
Year Model Casting No Part No
26-28 344031
DIFFERENTIAL CASE,
Year Model Casting No Part No
26-28 344021
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