Three on the tree hangups? Find out whats wrong and fix it. Linkage slop, motor mounts, adjustments, trans issus, etc? Theres something that should obviously jump out if the problem is happening as often as you seem to indicate. I drive a 51 2dr sedan with a 261 and 3 on the tree pretty aggressively without to many issues. But when something happens often, Its usually easy to duplicate and diagnose. JMO
