Flat Head Six Engine Numbers

Replacement of the original engine in a WDX-WM300 Power-Wagon was common practice over the often hard lives of these trucks.

If the numbers on the engine in a Power-Wagon do not match the numbers on the Power-Wagon Engine Page then the engine may have been replaced, and the list below may help determine what the engine came from. Most of the numbers were collected from parts books, and other Factory literature, but have not been verifyed by actual cars and trucks in the field.

This means that it is possible that some of the data below, while correct according to the parts books, may not match the practice followed on the assembly line.

The location of the engine number is basicly the same on all 23" and 25" long Flat Head six engines ,on a raised pad, on the drivers side of the engine, about 3" back from the front of the block, just below the head. The engine pictured below is from a 1951 or 1952 B-3-PW6-126 Power-Wagon.

Click for larger image
Click for larger image
The pad on a 251 is a little different in shape, below is an image of a 1962 WM300 251 engine number. This number is still in the same basic location as the one on the 230.

Click for larger image
Click for larger image
Some FH6 engines have the number stamped on the top of the raised pad, as seen in the images below. So far this stamping location has only been found on 25" long blocks, from applications other then a WDX-WM300 P-W. This engine was originaly from a 1949 Chrysler Windsor or Royale, but was found in a WWII Dodge truck.

Click for larger image
The list below is all the Engineering codes for each model of Dodge truck, Chrysler, Desoto, Dodge, and Plymouth car that could be found at the time this list was made. The Engineering code is normally the code that is used as the begining of the engine number on these vehicles. Most of these codes will be followed by a sequential number that would help calculate when the engine was made if a list of starting numbers was avalible. These codes are in order by first letter, and then numeral order, not year, or type of vehicle.
Engineering code Displacement Length of head Make Model Year
T112 201ci or 218ci 23 inches Dodge Truck WC 1941-1947
T114 218ci 23 inches Dodge Truck WD-15 1941-1947
T116 218ci or 230ci 23 inches Dodge Truck WD-20, WD-21 1941-1947
T118 228ci or 236ci 25 inches Dodge Truck WF-[20-22],[30-34],36
WFA-[20-22],[30-34],36
WFX-[20-22],[30-34],36
WFAX-[20-22],[30-34],36		 1941-1947
T120 241ci or 251ci 25 inches Dodge Truck WH45,WH46,WH47,WH48,WH49,
WHA45,WHA46,WHA47,WHA48,WHA49,
WHX45,WHX46,WHX47,WHX48,WHX49,
WHAX45,WHAX46,WHAX47,WHAX48,WHAX49,
WG40,WG41,WG42,WG43,WG44,
WGA40,WGA41,WGA42,WGA43,WGA44,
WGAX40,WGAX41,WGAX42,WGAX43,WGAX44		 1941-1947
T122

228ci or 236ci

25 inches Dodge Truck WF-39 1941-1947
T128 228ci or 236ci 25 inches Dodge Truck WFM, WFMA, WFMX, WFMAX, 35, 37, 38 1941-1947
T130 241ci or 251ci 25 inches Dodge Truck WHM, WHMA, WHMAX, 45, 47, 48, WGM, WGMA, WGMAX, 40, 42, 43 1941-1947
T142 218ci 23 inches Dodge Truck B-1-B 1948-1949
T142 218ci 23 inches Dodge Truck B-1-C 1948-1949
T146 230ci 23 inches Dodge Truck B-1-D 1948-1949
T148 236ci 25 inches Dodge Truck B-1-FL, B-1-F, B-1-FA 1948-1949
T150 251ci 25 inches Dodge Truck B-1-JL, B-1-JAL, B-1-J, B-1-JA, 1948-1949
T152 236ci 25 inches Dodge Truck B-1-FM, B-1-FMA, 1948-1949
T154 251ci 25 inches Dodge Truck B-1-JML, B-1-JMAL, B-1-JM, B-1-JMA 1948-1949
T156 281ci 30 inches Dodge Truck B-1-R, B-1-RA, 1948-1949
T158 331ci 30 inches Dodge Truck B-1-T, B-1-TA 1948-1949
Year Displacement Length of head   Parts Books Show: Actual Engines:
1961 251ci 25 inches   TR-25-8-3 R25
1962 251ci 25 inches   TS-25-8-3 S25
1963 251ci 25 inches   TT-25-8-3 T25
1964 251ci 25 inches   VT-25-8-3 V25
1965 251ci 25 inches   AT-25-8-3 A25
1966 251ci 25 inches   BT-25-8-3 B25 or B251
1967 251ci 25 inches   CT-25-8-3 C25
1968 251ci 25 inches   DW25121880000 ????

I hope to update this page from time to time as more information becomes available. I am also very interested in suggestions for additional content to include on this page.

Please contact Registry@t137.com if you have any suggestions or questions.



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