Most all automotive motors torque to the right when under load. If something is too close when the motor rocks on its rubber mounts, it's going to hit.
In the mid to last 60's, Chevrolet had issues with left side motor mounts. They would break and when the throttle was hit, the motor would rock up off the mount and due to the mechanical linkage to the carb, the throttle would go wide open. This just created a BIG problem.
Chevy's fix was a steel cable from the frame to the left front exhaust manifold bolt. They also came out with a new style motor mount which had a steel plate in the middle that would not allow the motor so shift very much even if the rubber broke loose from the steel mounts.
As far as the right cylinder hitting the top of the front frame rail, it looks like a little grinding is in order.
Good catch there Elcyd...
