I got mine for $10 at a U-Pull-It yard on half-off day. Dollar-for-dollar one of the best upgrades I've made so far. 
Quick ratio box swap lesson
- Thread starter malibu80
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Swap completed. Alot more road feel and tighter. I'm having problems finding the info on the pump mods. Apparently when you change over to the quick ratio box, giving you higher effort and faster ratio it requires a little boost in maximum pressure and flow to help it turn smoothly and quickly under all conditions. On the back of the pump where the high pressure line threads into a fitting, that fitting needs to be changed out. This fitting on our G body vehicles has a smaller orifice than the fitting from a quick ratio pump. The fitting part number is 26009894. When you take this fitting off, you'll find a spring. This spring has to be changed out also.The g body spring is taller than the one that is going to be replaced. Spring part number is 5688037. Once that comes out, there's what they call the valve assembly that comes out next. At one end of the valve assemby is a screen. Its at this end that you take a cresent wrench and take the valve apart to remove the 2 washers. Mod completed. Sorry, I should have taken pics of this mod. I'll try to find the web page I got the info from. It had pixs of the parts needed as compared to g body pump parts.
Sounds like hell lol. I assumed that the parts store probably did all this when I bought the reman. box. I don't trust pulling parts from junkyards unless it is something like bracing or anything that is not mechanical (other than an 8.5 rear end). I'd rather just by new and reman. parts than risk junkyard parts.
I'm really glad this thread was started, as I'm going to be doing a quick steering box swap my self.
I've got a steering box from an 87 (88 -89?) IROC Camaro. Also bolts right in. It has a tighter *road feel* more like a sports car should feel. It is coded XH on the round portion on the front of the box. It has the internal stops needed to run larger diameter tires to keep them from rubbing at full lock. There is also a YA box that has a softer feel and differant stops. Then there is also the regular feel box that is more comparable to a non-F41 g-body or Caddy/Caprice (think granny soft steering).
I also added the IROC valve in the back of the power steering pump, where the high pressure line goes into the pump. It sinply unscrews and the IROC valve is a direct replacement. If I understand it correctly, the differant boxes have differant pump pressure requirements.
I used the IROC pitman that came with my box and had no clearance problems, but some guys report the inner tie rod hitting the center of the frame.
I also added the IROC valve in the back of the power steering pump, where the high pressure line goes into the pump. It sinply unscrews and the IROC valve is a direct replacement. If I understand it correctly, the differant boxes have differant pump pressure requirements.
I used the IROC pitman that came with my box and had no clearance problems, but some guys report the inner tie rod hitting the center of the frame.
Sorry to revive an old thread, but would it worthwhile to use an F41 box and arm with an IROC valve?
malibu80 said:
Hmmm, i wonder if this is the reason why hoses wont bolt up properly. I know that on the power steering pump, theres and Exit (pressure line) & Entrance (return line). Is it the same with the power steering box? Cause my pressure line bolts up to the fiiting closes to the fire wall, and my return line to the other end. My concern is hooking up the hoses the wrong way on the power steering box.
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