Fret-- will hazard a guess. your '51 has a 1950-51-52 car powerglide and babbit bearing 235, as those years were torque tube rears, and had not yet developed the insert bearing engines, even though they were 235 cuin.(needed more inches to pull the inefficient powerglide) and the shift pattern you described is exactly like the '50 the my first wife had when we married (pea green fleetline two door) sure wish I had it now like it was then. Oh yea, the 'glides of those years were castiron cases and HEAVY!!!!
