Finally got around to working on this clutch release issue. The clearance from the rear of the clutch disc seemed to be the problem, so ordered a new one for my year of vehicle. The hub on the original clutch disc protruded about 3/4 inch behind the rear damper spring plate which was always correctly facing the rear of the truck. The new clutch hub was flush with the rear of the damper spring back plate and the problem was resolved immediately when I installed the new disc. I had ordered the original clutch, pressure plate kit to fit the 6 bolt flywheel on my 235 engine which showed it for a 55-56 truck. So much for all of the parts being interchangeable. Thanks for the input and suggestions. On to the next challenge!
