Power Steering Conversion Help

[TheEvII]

I converted my 68 from manual steering to power with the flaming river set up, including the drop bracket for headers. The only problem is, when I turn the wheel, left mainly, when the car is not rolling, the whole system vibrates violently. The steering seems to work well driving down the road. Any ideas?

 

[68keyblr]

Are you running wide front tires? I have the same behavior on my '68 when I put 17x8's on the front...

 

[TheEvII]

Do you have the drop bracket for the headers? Mine also seems to vibrate just a little bit when the vehicle is on the hoist in the air. Like I said, mainly left.

 

[TheEvII]

Ok, so here it is. The problem with the steering is a bad NEW control valve purchased through Summit made by Flaming River. Not one $250 NEW valve but TWO NEW VALVES. I put on a used valve that I rebuilt and have no vibration. If any of you have a vibration in the power steering after installing a new control valve, it's NOT because of your wide tires. Just some info.