[Flathead Fever]

No shaft would definitely eliminate the oil pump shaft as the problem. You hate to grind away on it becuae if you end up with too much clearance it could affect your point gap. I'm not a Y-block guy. What's that shaft go into, the block, oil pump... Could it be something like a misaligned oil pump.

I forget I do have a Y-block I could look at. I bought a complete "F" motor in pieces with everything but the crank and crank pulley. Lots of new spare parts. McColloch dual carb bonnet setup for the supercharger. I cannot even find a photo of one like it. That missing pulley seems to be non-existent. I bought the engine from a 90-year-old neighbor. The rebuilt heads have the correct supercharged casting numbers on them. The guy he bought it from had it as a spare for a '57 supercharged T-bird he dragged raced in the early 1960s. I need to see if it has a "F" vin stamped on the block but I pretty sure it will. I paid a whopping $1600.00 for all of it. I also bought a rebuilt Boss 302 engine with an inline crossboss 4V carb and 427 side oiler built completely from NOS parts from the same neighbor. I got the good friend and neighbor discount.