Originally Posted by tclederman
Post both date casting codes (head and block) and the engine serial number.
Post the head block casting codes.

Sometimes you have to look for physical characteristics of the engine, in order to figure the year (decade) code (3, in your case). Unfortunately some 1953 and 1963 engiines could be configured with the wrong head and they would look quite similasr. You will need other casting codes for definitive identification.

Does the valve cover have 2 or 4 mounting bolts/screws?

CON 2 means Conveyer 2

There were a variety of markings on flywheels used on low-pressure 216/235 engines and on 235/261 high pressure engines (cars and trucks).

engine serial # posted ealier in this thread S1219P

I will have to wait till next week for days off to get the head numbers.

Valve cover has 4 mounting bolts

My new 1949 Chevy One Ton Dump Truck. Still have it but parked, needs a new motor.
1953 2 ton parts truck Long Gone
1957 GMC LCF On 75 Cadillac Eldorado Frame
Updated Feb 2021