Is there a difference between auto flywheel and manual flywheel starters ? I had my engine on a test stand, it had a auto flywheel on at the time, it started fine. Before installing engine in my car (68) I put a manual flywheel on, now starter gear slams into side of flywheel, no matter how much Ii shim it, it won't mesh with flywheel right. engine is a 73 Pontiac 350. Thanks-Gary