Thread: 0-320 crankshaft part numbers, superceded list. Educate me please.

There are hollow shafts for constant speed, solid shaft for aerobatic aircraft(not constant speed compatable), flanges with and without lightening holes. There are supposedly thicker flanges for aerobatics. Otherwise, leaving out the H models, as far as I can determine, any crank will fit any case. I am going the same route as you, I have a junk crank with lightening holes and a good crank without and as far as I can determine they are both...

Hi gang: Here's my situation, I'm trying to accumulate enough parts to build up a 150 hp fixed pitch IO-320. I have a narrow deck crankcase that has been overhauled and had the mounts changed to dynafocal. I need a crankshaft to go along with it. So here's my question. My April 1970 parts catalog lists a crankshaft 75010 part number, is this still a valid part number? Or has it been superseded? If it has, where can a fellow go...