Trying to identify engine number
 

I am trying to help a friend identify which big block V6 he has the number on the block is WG2 247G675 would also like to know what year it is. Thanks for any help it will be much appreciated.

Re: Trying to identify engine number
 

The engine ID number is almost always on top of the block, right in front of the passenger side cylinder head.

Jolly's site has lists of data from owners of various years trucks. Here's the list from 1964: http://6066gmcguy.com/GMC-vin-list-64.html. Some of the listings have engine serial numbers. If you look at the different years, you might be able to narrow down what year your friend's engine is.

Re: Trying to identify engine number
 

All I have to go on is the engine number it is not in the truck and has not been for years it is powering a hammer mill now.

Re: Trying to identify engine number
 

If that's the Number on the Pad on the front of the block, then something is not right.

The possibilities could be: (mostly guessing here)

-A Rebuilt and Restamped Engine??
-A Canadian Engine ??
-An Off-Road Engine and that's the way they stamped them??