Spitfire Head Question

[Doxerman51]

Hello All,

Been awhile since I have been on this forum. Glad to be back.  I have a “Spitfire” head with casting/part number 1313826-2. I believe this head was used on the 251/265 Chrysler motors. Just wanted to be certain, so I’m asking you folks. Thanks.

[Rusty_OToole]

The Spitfire name was used on postwar Chryslers so you are correct. 6.6:1 compression up to March 1949, 7:1 thereafter. Maybe someone with a parts book could nail down what year you have.

[c49er]

1313826-1 is the head on my C48 1950 Chrysler woodie wagon.

[c49er]

I have an original 265 too... head # 1120796.

Looked in several 1940-54 Mopar parts books and MoTors books.... the cylinder head 1949-54 part #'s conflict among different books... confusing to say the least.

There seems to be no positive answer in over an hour of searching this issue from my efforts.

[Doxerman51]

Hello c49er,

Thanks for the confirmation that it is a 251 Spitfire Head. Is the 1120796 head a Spitfire head or just a plain head. I have a 241 Spitfire head out of a ‘41 Chrysler, that I installed in my IND-7(236) to increase the compression ratio. The number on this head is 869847-1.  Casting date of 2-20 which I assume to be Feb. of 1941 or maybe 1940. I have the IND-7 installed in my 1941 WC-12 Military 4x4. I had the motor rebuilt and balanced with a longer duration (Lift) cam. It’s a real smooth runner. Much more “Umph” than the 230 I had in it before and that was with the installation of a 1957 Plymouth head on it. In my estimation, the 25” motors seem to be a bit heavier duty and bettter for the open road than the 23” motors. 

[c49er]

The 265 out of nice original 54 windsor chrysler ( was rear ended hard) has an original 1120796-2 "Spitfire" head on it.

[Spinneyhill]

12 hours ago, c49er said:

The 265 out of nice original 54 windsor chrysler ( was rear ended hard) has an original 1120796-2 "Spitfire" head on it.

 

My eyes must be in trouble. It reads 1120806-? to me?

[c49er]

You are right. Don't know what to say about that !....looking at too many engines and parts books.

Done the best I can on this!!!! Which is not much.

[Doxerman51]

I was hoping you would pick up on the error.  We all make errors. No big deal. Any chance you can take a full photo of the head? I need to learn how to post pic’s on forums. Still in the dark ages as far as that goes. LOL. 

[c49er]

Tomorrow i'll get you pictures of the heads on two of my 265 engines and a 251 in a 50 chrysler.

[Doxerman51]

Thanks c49er. Have a nice evening. 

[c49er]

OK....

Some pictures of  the "Spitfire" heads on two Chrysler Windsor 265 engines...one 1953 265 in my 52 dodge 1 ton PU... second 1954 265 spare running engine. Both use head # 1120806-2

Then a picture of a 1950 Chrysler Royal Wagon with a 251 engine and "Spitfire" head # 1313826-1

I also have a couple 1946-48 Chrysler engines (model C38) that I'd like to check the head #'s but a little tough to get to.

Edited November 26, 2017 by c49er (see edit history)

[Doxerman51]

Thanks for the Photo’s. 

[Lindy]

Putting together a pilling tractor with a 265 engine, would a "Spitfire" be higher Compression? Would that be more compression than planing the stock head?