Can someone tell me what year a transmission is by a casting number?

[keiser31]

A friend has a transmission that he believes is from a Plymouth. Does this casting number of 631841-4 tell what year it is and does anyone here know what year it is? Sorry, I have no photos of the unit itself. Thanks in advance.

[Spinneyhill]

I can't see it in The Hollander 1952, in which Plymouth starts at 1932 in the Transmission section. Handbrake on it?

 

I was going to say that DPCD and Willys case numbers seem to start with 6, but then a 1941-42 Ply box started with a 5!

[keiser31]

Yep....it may not be a Plymouth transmission. I will have to ask about the handbrake.

[Chrycoman]

 

Casting numbers were not listed in the parts books, unless the casting number was the same as the part number (ie, the casting was the only piece under that number - no attachments). 

 

However, checking the parts book I can find 631840 as transmission case for 1936 Chrysler CZ and C6 and 631843 and 631844 were gears for CZ and C6.   The same items were listed for the 1936 Plymouth, Dodge and DeSoto Airstream models.  631840 was also used on transmissions without overdrive from 1937 to 1939.

 

Dodge Truck were issued part numbers in the 5's from, the F series through the H series..  Of course, if a truck part is used on  a car the part number does not change.

 

 

[keiser31]

Thank you very much for your information.