Clutch Problems

[63chevy4x4]

This weekend I put a 283 I had in the 63 4x4 i just brought home in hope of just being abel to drive it. The engine has a new clutch and was previously in front of a 3 speed, I now have a 4 speed behind it. My problem is that when I push the clutch in its only the resistance of the spring in the cab untill about 1 in from the floor and then there is slighty more pressure but the clutch wont dis engage, it is a manual linkage. help?