Engine block number

Nick Bombini · Post by **Nick Bombini** » Thu Aug 11, 2005 8:39 pm

I was wondering if anyone is able to give me any info on the number stamped into the engine block on my truck.

I believe it reads "ETO 270 399". I can't find any numbers after the 399

dr deuce · Post by **dr deuce** » Fri Aug 12, 2005 7:25 am

That is different!

All GMC engines from that era that I have seen and into the 50's too started with 3 digits that were the CID of the engine followed by the rest of the number.

Steve AKA Dr Deuce

armydriver · Post by **armydriver** » Fri Aug 12, 2005 8:20 am

Interesting observation.

dr deuce · Post by **dr deuce** » Fri Aug 12, 2005 5:10 pm

For Chevys, you have to be observent of the external features AND have the decoder ring for the numbers to figure out which engine you have....

Steve AKA Dr Deuce

bobc · Post by **bobc** » Sun Aug 14, 2005 5:47 pm

I would bet it was a replacement engine, ETO = "european theater of operation",very interesting,I'll have to look at my engines and see if any have a wierd number.

joel gopan · Post by **joel gopan** » Sun Aug 14, 2005 7:50 pm

Could be the Ord Depot , someone will know. There will be a rebuild tag on the Drivers side at the base of the block giving rebuild specs, and that may indicate the Depot.
Joel

The GMC CCKW

Engine block number

Engine block number

engine number?