Never believe me, but I always thought that if the block and head had the same number of bolt holes (15 or 18), they would work....with the 848 caveat. Like drilling holes in my 848 head for coolant circulation to match what's in my 261. The 18 bolt pattern is the same.
How close am I?
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
