dlogvine
Master Chief Petty Officer
- Joined
- May 4, 2015
- Messages
- 832
Never attempt to turn over a GM motor from the crank bolt. it will break off the bolt or strip the threads
either use a bar with two fingers to go thru the balancer holes, or use a crank socket.
You can do this if the engine rotates freely and spark plugs removed. If the engine is stuck trying to turn it this way can definitely cause the crankshaft damage or destroy the bolt.