There are those "No Clutch" directions again.
My '62 6500 clearly stated to use the Clutch.
Although mine was an Electric Shift, I'm not sure if that made a difference or not.
Bill
This is what is on the 68 C50 Vacuum Shift
And a 80's Ford (I Know) Electric Shift.
I still use the clutch down shifting,
No clutch up shifting
I couldn't find the thread were this was debated.
Tom