Received digital angle gauge & level today. Looks like the engine does not have an excessive aft tilt. I did measurements across the entire engine. The more forward the measurement the lesser degree of tilt. For example at the water neck housing 2.5, degrees aft tilt, top of carb 3.1, back of engine by oil pressure sender 2.9, trans pan 3.3, and aft tail shaft 3.5. I would like to thank everyone who commented. I appreciate your input.BTW I'm going to look into the possibility of intake manifold being on backwards. I always thought they could only go on one way.
Frank