Increasing Steering Angle

I have a few questions. I am working on a ‘92 Kenworth C500 but they are similar to the T800s. I am trying to get a tighter steering since it doesn’t get close to any of the suspension or axle components currently.

First how much does a steering gear turn either the input shaft side or the pitman arm spline?

Also, can you put a longer pitman arm on to increase the “throw” of the drag link to increase steering angle if the gear is maxed out? My current pitman arm is only 8.75” while my other trucks, with obvious different geometries, have arms in the 11” region.

I have a HFB70 steering gear and have set the manual poppets.

Any advice and input is appreciated.

 

To the left I am but to the right I am not. It’s like the gear “bottoms” or runs out of rotation before it gets to the axle stop.

 

yes they are. There is another mark but it would be way off one direction

 

To do this I probably should take the drag link off as well? I might try that and see if it will rotate both ways the same amount.

 

One notch on what? The pitman arm? From what I recall when I did the crosses in the steering shaft only goes on one direction.