Topic: '66 gt steering box on manual vs. power steering

[socalgt]

Does the original steering box on a '66 GT with manual steering need to be replaced in order to convert to power steering?

[jwc66k]

Mechanically they are the same. The difference is in the "preload". It's covered in the service manual. If it's a do-it-yourself project I don't know.
Jim

[67gta289]

I would classify it as a DIY task.  The only not so common tool is a torque wrench that measures well in the 6-10 inch-pound range.  I found that a beam style is what is needed.  There are 0-60 in-lb beam styles available for about $30.  Seems to me that a 3/4" or 11/16" 12 point socket fit over the shaft, so you need adapters to convert from the 1/4" drive up to 3/8" or 1/2" matching the socket.

Good instructions on http://www.stangerssite.com/adjustment.html