V12 interchangeability

[Michael Lepak 17679]

Does anyone know if the 1931-1937 V12 engines are interchangeable within these years?  i.e.-would a 37 model year match up to a 31 transmission and bellhousing in a 31 car?
In the listing of technicians there is no one named who specializes in this engine.  Is there anyone who has worked on these I could talk to?
Thank you,
Mike
e-mail:
mikel1@charter.net

[Barry M. Wheeler #2189]

Try either Carl L. Steig of San Leandro, CA, or Ted Raines, also of California. Both have restored several V-12 engined cars. Their phones are in the Directory.

[Philippe M. Ruel]

Hello,
from the 1935 edition of Motors factory parts price lists

* 1931-33 370-A, -B and -C cylinder block, with fitted pistons, rings & pins was rated $94.50
* 1934-35 370-D identical part was $98.40

It means the part is not the same and will certainly feature different casting numbers. Unfortunately my book does not show parts numbers.
Of course it does not mean a later engine wont mechanically fit an earlier transmission or engine compartment.
Hope this can help.

[Mike #19861]

But were the blocks not separate units from the crank case? That would be where the trans bolts up.

 Mike

[Warren Rauch]

  My 9th edition Hollander (1940) says 31-35 are the same and 36-37 are the same. From Cadillac parts book Crankcase part numbers 1091393(1931),1096001(1932-33)1096285(1934-35),1096518(1936) sorry I dont have 1937. Warren

[Michael Lepak 17679]

Thank you, gentlemen, for your assistance.
I now have some good leads to follow.
Mike

[Bob Hoffmann CLC#96]

I believe that all the V-12s have the same pattern for the bell housing. There are differences in the crankcases. The 31s have no fuel pump. The 32/33 has a float for the oil level. The 34 and later has a dip stick. Hope this helps. Bob