This 350 (which I’m currently tearing down) was manufactured on 11 July, 1974 at the Tonawanda engine plant. Rated for 145HP with its 2bbl carb, it was sent to the Baltimore assembly plant, where it was mated with a TH350 and installed into a Chevrolet A-body (based on the year/plant this is would be a 74 or 75 Chevelle or Monte Carlo).