My 235 had a oiling problem, but thats fixed oil, to valves now smile . My noise sounds like a throw out bearing howling near top of rpm range, but sounds like its from valves kinda :confused: ...No noise at idle, 30-40 psi at idle cold, about 10-15psi hot.
Any ideals?
Brad

http://s320.photobucket.com/albums/nn343/brsdb3381/Tuesday_MY_56_Chevy/

56 3100 6 cyl