The GMC CCKW

I just bought an old remanufactured 270 engine and would like any information that anyone can provide. This engine has not been run and come bolted to a metal stand on a wood & metal pallet. It is complete with clutch, bellhousing, spark plugs, distributor, manifolds, carburetor, fan, fan belt, air cleaner, etc. Most of the parts are covered in cosmoline.

I have not started opening up the motor to see what the internal condition may be. Does anyone have an idea who rebuilt this and if they normally did a good job?

Please see the photos of the engine and data plate at the links below.

Thanks for any help you can give. Al.


http://good-times.webshots.com/photo/28 ... 6121FTxsZv

http://good-times.webshots.com/photo/28 ... 6121dAhgai

http://good-times.webshots.com/photo/27 ... 6121KHongB

hello
your motor rebuilt by private company "buchmann" for french army in november 1960 , french north africa
sincerely
olivier

Airborne, Do you have any idea what kind of quality they put into these motors? I have seen other messages on the board of good & bad rebuild processes, but nothing said about Buchmann. Thanks for any info you may be able to supply

http://www.oldgmctrucks.com/Photos/GMC_Numbers.htm Acording to block cast # it was made between 1946 & 1952 , i wish i had it .

old repair made with us original parts , usually rebuilt by private company better than french army rebuilt

motor 270 made during WWII for cckw military l thinks this one made during 1943

That is an excellent find. Thanks for sharing your good luck and fine photos with us.

I purchased a spare engine last year, that I am currently rebuilding. I'm pretty sure it is a CCKW engine. It has all of the later features: deep oil pan, cast iron carb, CCKW front engine mount, etc. There is evidence of at least two rebuilds: 4 small rivets in the block under the current Rossford Ordnance Depot rebuild tag.

I have a couple of questions concerning engine ID:

On the engine manufacturer's tag, the SN listed is: 270I458I (Note: those are the letter "I" not the numeral "1".) The pad next to the distributor has the same number. Has anybody seen a number like this before? I had thought that the engine SNs were, like the name implies, a number, like 237648.
The casting number is: 2135412. I know that there is a casting number list out there that has been posted on numerous websites (i.e. http://www.oldgmctrucks.com/Photos/GMC_Numbers.htm, stating that this casting number is for GMC 270 engines made only from 1946 - 1952. However, this list does not include wartime production. It seems likely to me, that the 2135412 casting entered service during WWII, and remained in production through the post war period until '52. Two reasons for this assertion:

1) I have seen a number of posts by CCKW owners reporting casting numbers of 2135412.

2) The tag on this particular engine says " Yellow Truck and Coach", which did not exist after 1943.

Could this engine possibly have been a war time service replacement ?

Best Regards...