Ok... first it is supposed to take more effort to turn. This is a function of the internal hydraulic control valve T-bar. Your original Chevelle box may have had something like a 0.165" T-bar while the Jeep GC has a 0.195" T-bar. This is how you get steering feel and most of us think of this as a very good thing.
Do not touch that bolt on top of the steering box unless you have a real need to. If you loosen it up you will just create slop in the steering. I doubt you want that. And it should only need to be tightened up is parts wear inside, and that is probably not an issue either.
The steering neutralization was always an issue with GM cars. It is mostly a factor of how much caster you have in your front end alignment. Stock parameters, which are not recommended, called for zero degrees of caster. Most these days recommend as much as you can get with the stock parts which is usually around 2-3* positive. Having your alignment changed to include positive caster will improve the neutralization quite a bit.
The pressure valve is a secondary issue. The newer gear specs do call for a higher maximum pressure but you only see this under parking lot turning conditions and/or at full lock. If your steering effort is not impossible turning without moving, then I would not worry about the pressure valve.
Now there is a second function in the control valve and that is flow *volume* control. That regulates how much fluid circulates through the steering system. It probably will not cause you any problems either.
Do not touch that bolt on top of the steering box unless you have a real need to. If you loosen it up you will just create slop in the steering. I doubt you want that. And it should only need to be tightened up is parts wear inside, and that is probably not an issue either.
The steering neutralization was always an issue with GM cars. It is mostly a factor of how much caster you have in your front end alignment. Stock parameters, which are not recommended, called for zero degrees of caster. Most these days recommend as much as you can get with the stock parts which is usually around 2-3* positive. Having your alignment changed to include positive caster will improve the neutralization quite a bit.
The pressure valve is a secondary issue. The newer gear specs do call for a higher maximum pressure but you only see this under parking lot turning conditions and/or at full lock. If your steering effort is not impossible turning without moving, then I would not worry about the pressure valve.
Now there is a second function in the control valve and that is flow *volume* control. That regulates how much fluid circulates through the steering system. It probably will not cause you any problems either.
