Clutch fork questions

Hopefully someone can help us here, my brother is "74duster" and his computer is down so I'm trying to help him out. He put a 440 into his 74 duster with a 4 speed, and went with a hydraulic clutch setup because of clearance issues with his headers. (Here is his original post)
Hes having some problems getting the clutch setup configured correctly, and the big question right now is clutch fork travel. Can anyone give us an idea how far the fork needs to move to release the clutch? It's impossible to muscle by hand, but he needs an approximate travel distance to know where to attach the slave cylinder to the fork. Thanks in advance.
Author: admin