I'm trying to confirm parts numbers as accurate to a 33PD but with little success. I've searched through the 1928-33 Plymouth Master Parts Book but do not find the following numbers to parts in question. I know the motor number is PD154381, a 33. The starters are 734H, both applicable to a 33-34.
The numbers I cant fit are:
Head, 600668-2
Block, 618829-1
Transmission, 600996-4
Rear end with axles, 600211-5
Rear end with axles, 600211-10
Many thanks for the help, Bob Rogers, Shelton WA
My 1933 PD is earlier than yours, that may make a difference which I'll get to below in the "too long; didn't read" section.
The head on my car has a casting number of 600668-2 which matches yours and I am very sure this is original.
The block on my car has a casting number of 600629-4 which is different than yours. However that does not mean yours (or mine) are wrong. I think they are both original, see below.
I didn't bother crawling under the car to see what the transmission housing casting number is but the one you give seems very plausible. Ditto for the differential carrier casting number.
tl;dr (too long; didn't read) : It is highly unlikely that you will find any of these numbers in any published Chrysler parts book. And two different totally original 1933 Plymouths may have different numbers for things like the block.
Long version: Near as I can tell, Chrysler used the same general numbering scheme as the factory I worked in just out of college. The engineering work flow was something like this:
- Some assembly needs to be designed. The assembly will be a casting that needs some finished machined surfaces and maybe some assembly (pressed in bushings, etc).
- The engineer(s) goes to drawing control and get some numbers assigned. They will get several numbers:
- A number for the raw casting. In our example let us assume it will be drawing/part number 1001.
- A number for the casting after the machining is done. If numbers are assigned sequentially that would be drawing/part 1002.
- A number for the assembly after the pressed in bushings, etc. are installed. That will be drawing/part 1003.
The key thing here is that each step of the manufacturing process that alters the casting has a different drawing/part number assigned to it.
This being the first iteration the parts are likely to have either no suffix or a suffix of "-1". If there are changed released for the parts that are minor then the suffix will be incremented. "-2", "-3", etc.
- A bit later a fairly large change is needed that changes the casting enough that new/revised molds are needed. So the engineers go back to drawing control and get some more numbers allocated. Maybe 1247 for the new casting, 1248 for the machined casting and 1249 for the finished part. And they note that for field service the 1003 part has been superseded by 1249.
Now the service people are never going to send the raw castings or even castings that have had the machining step completed in to the field. The only one they will supply to the field and thus list in the parts books will be the finished assembly, in our case the 1003 part number until such time as part 1249 is released at which time the 1003 part will disappear from the parts book and maybe only show up in a supercedence (sp?) listing..
Now you are in the field looking at the part and you see that it was cast with a number 1001 on it or a 1001-2 (2nd revision) so you go looking in parts books for it and you will never find it as it was never supplied to the field for service. You look at another unit and see that the casting in that one has a number of 1248-3 and wonder which is correct.
Getting back to the number cast into my block (600629-4) versus the one cast into yours (618829-1). My engine number is 86xxx while your engine number is 154381. Looking at the parts book we see that they moved the oil pressure relief from inside the engine to the driver side of the block into a new boss/protrusion that did not exist in the earlier blocks. In this case a new casting with new molds is needed and the machining and assembly steps are different so new drawings/part numbers are released.
Both of our block casting numbers are in the range that was allocated/assigned during the time frame that the 1933 Plymouth was being manufactured so even though they are different they are both plausibly original.