Dave, this is your text from 21/02/06 on a similar question about the circle-48 marking on the engine block:
"The 48 seems to be a carry over from 1948. It is strange it was not changed to 49. In 1950 there is only the big circle with nothing in it. These were the only three years Chev used this casting mark."
What we have so far is:
(48)
CON4 G60 3693374
9
The (48) lines up right above the 74. Would the solo '9' below the casting number under '33' shed any light on this mystery motor?
Tks, Rob
