Flathead 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 verified 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 basically the same on all 23" and 25" long Flathead six engines, on a raised pad, on the drivers side of the engine, about 4" 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 Flathead 6 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 originally from a 1949 Chrysler Windsor or Royale, but was found in a WWII Dodge truck.
 

Click for larger image
 
The two pictures below are of a T135, 331 cu in Flathead 6 engine that has a length of 30". The serial number on these engines is located just below the head but a little further back from the front of the engine.
 

Click for larger image

Click for larger image
 
The lists at the below links are all the Engineering codes for each model of Dodge truck, Chrysler, Desoto, Dodge, and Plymouth car that could be found at the time this lists were made. The Engineering code is normally the code that is used as the beginning 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 available. These codes are in order by first letter, and then numeric order, not by year, or type of vehicle.
 
Click on the appropriate link below to find information about the engine number you are trying to look up.
 
Engines that have an engine number
that starts with the letter T are from
some model of Dodge Truck
Engines that have an engine number
that starts with the letter D are from
some model of Dodge Car
Engines that have an engine number
that starts with the letter P are from
some model of Plymouth Car
Engines that have an engine number
that starts with the letter C are from
some model of Chrysler Car
Engines that have an engine number
that starts with the letter S are from
some model of DeSoto Car
Engines that have an engine number
that starts with the letter IND are from
some model of Industrial Engine
Flathead Six Engines produced from 1958-1968

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 the Registry maintainers at the below email address if you have any suggestions or questions.


Copyright © 2004- - Eric Bannerman
All Rights Reserved