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Posted

The head on my 46 Plymouth coupe has no letter, either D, or P, or any other large letter. It has the numbers 1120803-8 driver's side, firewall end of the head. I am fairly certain that it is the original head on the original engine that came in the car, as I know the history of the car, but of course have no way of knowing for sure.

I also have a letterless head on the engine that is in my 37 PT-50 Plymouth pick up, but I am not even sure if that engine is the 218, or the one that Plymouth had earlier (201? maybe), just that it has a rebuilder's tag from 1953 on the side of the block. As the engines were commonly swapped out, I don't know for sure if it's the original engine rebuilt, or one rebuilt from another vehicle.

As these engines, and all their components were commonly swapped, it looks like the head you have would probably work fine for you. Joel

Posted

I am not 100% sure, but I think the head I have could easily be converted to a SPITSFIRE.

Michael, Sorry I am not wanting to sell the head from the engine of my 46 coupe, was just meaning to point out that the one you have will work fine for you, as the letters don't matter. Joel

Posted

Mike:

If you are going for points judging at a POC event you might lose a couple of points, But from your prior posts you had stated that you wanted to make a very good driver. Since the head on your current engine is working and I also assume that the engine is not being taken down then I would not worry about this very small detail.

If if you went to an AACA event you might lose a point but the judges do not look at the stamped serial number on the side of the engine block to confirm that the correct motor is in the car. Also remember that someone that owns a modern car and I say this with tongue in cheek a 1985 chevy might be jusding your car and might now know alot about your car. The system has flaws but they do not know everything about every car.

If the correct engine is inthe car and someone replaced the head and you can get the new head then this is fine but if the engine was replaced then go with what you have. You willnot get back all of the money that you are dropping into this car. The new car guys are looking for the high performacne cars with the Hemi's and not the old L6's.

If you have deep pockets then go for it but in my opinion I would not spend the money.

Rich Hartung

desoto1939@aol.com

Posted

I've got this one that's got no marking. If that's what you are looking for send me a PM. I've also got one that I think does have a P on it but it has the casting date of '54.

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Posted
i am not doing it for judging, i dont care about judging i care for my own self, i dont care about what someone else thinks, i wnat everything to match.

Have the machine shop grind the "DT" off the one you have and you will have a head with NO letters. Joel

Posted
You should try and find the elusive SPITSFIRE head. This is the only one I have ever seen.

MVC-001F-1.jpg

Don. I just found another SpitSfire head but it's the only one I'v seen since I discovered this one.

So far it seems I can only fine one at a time right after someone is looking for one.;)

Posted
Just checked. All 4 230 heads that I have, have the "D" on them:(

I guess the "D" would be for Dodge right? All of the U.S. Dodge flatheads were 230cu from 46 up right?

Posted
anyone have one on m car its wrong it says T for truck? i need one that says P.

I'll sell you my P20 head, can't think of what I'll ever do with it... It's just dead weight right now, I could use the money.

Pete

Posted
I guess the "D" would be for Dodge right? All of the U.S. Dodge flatheads were 230cu from 46 up right?

1942 I believe

Posted
doesnt the plymouth p15 head say P on it?
I don't think they all do, as I posted above, the one in my 46 coupe doesn't have a letter on the head, and as far as I know it came new with the car. If you have letters you don't like on your head why don't you just grind them off, then your problem is solved? Joel
Posted (edited)
Michael-

Is your engine head an internal bypass or external bypass?

Pete

Hi Pete, maybe he needs to read the definition and explanation to detail the differences between the 2 different by-pass systems.

There is a thread I believe on or website somewhere...........

Here is a link for Mr Warshaw, this you need to read to understand the differences of non-by-pass and by-pass waterpumps, unless you are aware of this already.

http://www.moparforum.com/waterpumpid.html

Edited by Rockwood
Posted

Your head has the internal bypass head. You can tell by the little bump on the front edge of the head.

What's your engine number?

Posted

I believe your block and head should have the external by-pass because the internal was not introduced until 1950 or 1951. If your block is from a P15 the serial number on your block, just above the generator, should start with a P15. If it doesn't, it is from a different car. If you let us know, when you can, what the serial number is, members can tell you if it is originally from a P15 or a different year and/or make.

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