if you have one of them ratchet tie downs you could wrap it around the steering box shaft and fasten it down so it wont turn, or could just make a wrap around the k member and one of the tie rods and tighten so it will not move easily.

 

You're in luck because the rack input shaft is round with a pair of "flats" instead of being splined. That means you can take a 4' length of 1/2" (id) iron pipe from Home Depot, flatten one end a bit until it grabs the input shaft, slide it onto the input shaft and steer from the driver's seat. I'd attach a vise-grip to the control end.
1) keep your speed under 50 mph LOL
2) don't crash into anything or you'll drive the pipe through your chest.

Funny story:

20+ years ago when i was working in a salvage yard, some lady shows up dring one of those humongous late 70s Lincoln Town Cars. She comes into the office ans says there's something wrong with the steering on her car and could we take a look at it. She says it's hard to keep it going straight on the highway. She gets behind the wheel and proceeds to turn the steering wheel around annd around about 6 times! WTF?
Well either the column-to-box pinch bolt was never installed at the factory or someone removed it later during steering box or column service. The car had been driven that way for years and the splines were so worn that they barely grabbed anymore. So here's this lady piloting a 2+ ton luxobarge around with almost no steering control. How freakin' scary it *that*?

 

Well I rigged up a sweet pipe that fit in the steering shaft that comes out of the knuckle with a hole for the stock bolt, used my V-6 project car for template and fitting. Was also told the donor car had 1 tire hat would not hold air, so I took one of my good wheel/tire combos as well. Donor car had 4 flat tires and a busted tierod on the passenger side! My sweet steering rig? pretty much useless! We were able to get 2 tires to hold air and put the good tire on one, so we had 3 good tires. Took us an hour to get the car in position to wench it on the trailer and another hour to get it up on the trailer. Lost the hatch and glass on the trip from Claremore to OKC, don't ask, but I lost the only good sellable body part. Now getting the car off the trailer we figured was going to be a real "B". We put another good wheel/tire on the car and put straps on the chain around the axle with enough slack to catch the car as it started to roll down the ramps. Good plan, right? Sure except we didn't check the chain hooks and the car took off down the ramps towards the house, a/c unit and pool filter! It stopped about 3 feet from total disaster! Looked like the 3 stooges unloading a car, except there were 2 of us! Got the idea for the steering rig from 1augapfel, just modified it, it would have worked if the car would have actually been steerable, we straightened the wheels by pushing and kicking as we moved the car with chains and wenches. In the end all is good, no loss of life or anything of value except the hatch! Thanks for all the ideas.

 

Sheesh -- people don't know what they don't know...

 

Yes sir!