I was going to say 33 if the engine has sat, overfill the oil so the dippers go in it to ensure oils is available till the Pump is proven working. The oil pressure is only about 10 lbs and feeds the mains and camshaft and maybe the rockers.. Smooth motor. Put a cover over the radiator to get it hot enough without driving. Cast iron Pistons are standard till about 1952.. I might have some NOS new valves. Small head long stems.. Nev