willysmjeeps.com

So I have an engine block, It's an M38A1 block, with at serial number of

806279-W-12-D AR CY CR

What more does that info tell me?

thanks,

Chuck

That's probably the "Casting Number".

The engine (block) serial number is on the flat place just above the water pump and for a M38A1 the serial # would start with "MD".

Serial # looks like:


Casting No. looks like:

So the serial number is MD83103.

It won't tell a lot. Without your jeep's serial number as a reference point it really doesn't tell us anything.

The M38A1 had a much longer military career than it's predecessors the MB and M38. It is extremely rare to find an original to the jeep A1 engine installation. Also the spread between chassis/tub serials and engine serials rapidly widened during production from 2000 to as high as 6000.

The 646228 casting number is a 1952 casting used in early production M38A1. The 806279-W-12-D AR CY CR is the 53 and on production casting.

Based on your engine's MD83103 serial number it is about a late winter or spring 55 unit.

thanks for the info, Wes

Chuck

And the serial number of your jeep is???

Wes,

I don't know if I've every chased down the jeeps serial number.

There are no dash serial plate or right rear wheel house patent plate?