Clutch or Transmission Going out

[jerry wonder]

I have been noticing what I understand to be the clutch slipping. It only happens in fourth and fifth gear on the freeway but when I hit the gas hard there is a decrease in power and the engine starts to rev higher. I have a 1985 50. Would this bee the transmission of the clutch failing?

[geezer101]

This will be the clutch IMO. If the transmission was faulty, it would just give out and lose all drive output.

[royster]

What you describe are classic symptoms of the clutch worn down to its rivets. Be sure to first check clutch adjustment, but everything points to a worn friction disk.