when i added a stepnotch the bar i have wont fit. plus i went to a 8.8 axle. this is a 55 f100 any body out there put theirs on the pinion with a bracket.

 

A panhard bar goes from the frame on one end, to a bracket at the far end of the rear axle. A bar only 1/2 as long as the distance across the frame would be much too short, the tight arc it would trace will cause side to side motion of the rear end. It should be as long as possible and horizontal at rest. That requires a long mount on the frame end which wants to twist the frame. A diagonal brace should be added from the lower end of the frame mount to the frame on the other side. A second brace just above the first from frame rail to frame rail will complete a triangular bracing and prevent frame damage.

 

I was going to use one that is 30" long. With the travel i get from my bags it should only move 1/8th.

 

i was wondering how much travel there would be. if i put it over the top of pumpkin to the other axle tube if the axis is the same should be able to arch the bar. put axle back in today thought it traveled more than that.. wanting to put bags on back of axle. but if that wont work will have to be in front

 

If you put airbags on the rear of the axle why not add a stud to the lower mount plate on one side to attach your bar to. Then drop your mount off the opposite frame rail so the bar is horizontal. That should put it behind the pumpkin.

 

are you saying to put it behind the bags. im running 2600 lb bags that would put it out there for clearance

 

Exactly! The panhard bar would be behind the bags and rear end.