[AZCamino]

I have the original steering box off of my 1996 GMC Sonoma. I replaced it, shortly after I bought the truck new, with a ZQ8 steering box. I am now considering options for upgrading the steering in my 1966 El Camino and started looking at this almost new gear box, that should practically bolt-up. I'm aware that I would need the Lee adapters and a different rag joint to install in the EC.

The new stering box has the same travel as my 66/67 box. The new box is 3.25 turns lock-to-lock. I want to know if this is a fixed ratio or a variable ratio box. Can you tell from this photo of the sector gear?

 

[Philip]

Variable, IMO it is a better feel than the quick ratio boxes. More stable on center but turns quicker once off center.

 

[AZCamino]

Thanks, Philip. That is good news. I was hoping it was variable. I was trying to remember the difference in the Sonoma after the box was changed to the ZQ8. The ZQ8 has the same number of turns, but I think I remember that the response was quicker and firmer. So along with the fixed fast ratio, I think the ZQ8 had a larger diameter T-bar. I think this variable unit is just fine for my EC. I Think I will use it as is, with the Lee adapters and a different rag joint, unless there is a way to put just the sector shaft and rack piston in an original box and keep everything else original. I don't necessarily want to change the T-bar, I think the variable would be just fine with the original small T-bar.

 

[Philip]

All of the internal parts will fit into your Chevelle housing. If you do not feel comfortable doing it drop them both off and I can do it for you.
You will still need to change the steering coupler but the Lee adapters will not be needed.

 

[AZCamino]

There is no way to retain the original input shaft/ t_bar and just switch the pitman shaft and rack-piston?

 

[Philip]

Yes just the rack and pinion can be changed. Not sure there will be any gain in just doing that part. The stiffer feel will come from changing the input side of the assembly.
If swapping out the internals it may be wise to install new seals while it is apart.

 

[AZCamino]

Yes just the rack and pinion can be changed. Not sure there will be any gain in just doing that part. The stiffer feel will come from changing the input side of the assembly.
If swapping out the internals it may be wise to install new seals while it is apart.

The gain is the change from 4.25 turns lock to lock, to 3.25 turns lock to lock. I would still have the stock feel in the center and I would still have a totally stock appearance including an original rag joint. My EC is more restoration than mod. This is the way I'm going to go. Thanks! I'll get a seal kit and give this a try.

I painted my frame this morning!
http://s1254.photobucket.com/user/BATester327/media/1966 El Camino frame/IMG_0039.jpg.html

 

[Philip]

Okay I see the gain. Do you have a tool to install the little balls in the rack? If not I can make you one.

 

[AZCamino]

Maybe Tom has one and I can borrow his. I'll ask him.

 

[Philip]

He might, IIRC I made one for him a few years ago.

simple tool to make, had it in my tool box since the first gear I rebuilt back in the 80's

Here is a drawing Jim Shea did of it

 

[AZCamino]

That looks easy enough to make. Thanks, Philip! And I was reading the procedure in my 1966 Chassis Overhaul Manual. Should be no problem!

 

[Tom Mobley]

It's a little tricky.

I sent you PM on that. the worm,rack and sector go together. You can change them and keep the stock spool/stub shaft. You'll be able to use your stock rag joint and hoses.