I have the similiar motor a 1963 327 and I have been told that others have put them on with the wood block or other soft serface hammer. I have also been told that while it is apart that it can be drill and tapped for fine thread regular bolt found in most 350. I am looking forward to see others response. When I have the front off of my truck for paint and body work that would be a great time to drill the crank if that is a good choice. Ed ke6bnl
my motor has the camel hump head 461 heads not the biggest valves. The light truck and the motor seems strong and goes well. Ed ke6bnl