[Bob Carriere]

Need EX-Purt advice on GM-Chev engine block

Looking at a 261....casting number 3769717...1958-92 period with XXXX848 235 head.

Can't seem to find any reference or meaning of serial number which reads W 312809.

I was told it came from a pickup truck..... but it has these punny little 3/8 oil holes on the side of the block. My other 261 block which came from a 5 ton Chev truck had 3/4 oil line to the full flow filter.

Would I have a Canadian Pontiac engine.... or a small 1/2 ton pickup engine with only by-pass filter....???

Stumped???? but wise enough to know where to ask!!!

Bob C.