You'll do a lot better with one that has about 8-10 degrees advance. You would have a hard time getting it to run decent and not ping itself to death, even if you could find one like 23-26.
An air ratchet might be a tad overkill. A small battery powered drill is more than enough. Pulling the engine over by hand while you run the pump is always a good idea.


'67 GMC 3/4 292 4spd