Help! front 10-bolt wheel bearing preload torque spec?

[redz 1970 K5]

So my gears were installed yesterday, and I noticed today that the hubs were hot to the touch- I could only keep my hand on the hub for a second or two after about a 10 mile drive. They either put too much preload on the wheel bearings or did something wrong with the brakes.

I am going to take it all apart tonight, I went ahead and bought manual hubs to replace the auto hubs. I haven't bought a shop manual for this truck yet, so I was hoping someone could tell me the torque spec for the preload on the wheel bearings?!

Thanks in advance.