Heavy clutch pedal?

[dzwestwindsor]

I have a 1971 C20 with the 4 speed muncie with a granny gear. Ever since I got the truck a few years back, I've noticed that it takes a lot of force to depress the clutch pedal. I've never driven any other truck so I don't know if it's normal or not, but I'd say it's easily double or triple the force required in a today's cars.

The pedal travels half of the way down fairly easily, and then reaches a point where it really takes effort to depress it. Does that sound normal?