What’s my engine?

[Old Truck Nut]

Hello guys and gals.  New guy here with questions.

 

Recently acquired a 1935 (second series) Model KC pickup.  After some poking around I find it does not have the original engine.  Here’s what I know:

23-1/8” long block

block serial number 112 - 18830. (The - is actually a #1 stamped on its side).  No T-12 prefix.

block casting 860229-15

casting date  (I presume) 37   7

below that 11   22

stroke 4.400”

head casting. 870066-2

 

Can  someone out there tell me what I have?  Thank you.  Any help appreciated.

 

old truck nut

 

[sidevalvepete]

Some pics of the numbers you have quoted would be helpful. Especially the block number. Stamped on the boss at top of block above where generator is mounted. Your "serial number" is foreign to me...

[Merle Coggins]

I suspect the "112" should be "T12" if the "T" stamp wasn't held straight and the top didn't stamp correctly.