Regardless if the crank snout is drilled or not, that
bolt shouldn't be used. It's a fine thread and can strip easily.
Best to get the right tool for job. Better to get a crankshaft socket and
use a 1/2" breaker bar. Besides, with the socket you can turn the engine
both ways if needed.
Dale
What year block? I think only the early blocks weren't drilled in the crank. 65 and older?
