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Discussion Starter #1
I have read a few accounts of people saying putting an IROC (quick ratio) steering box in a first generation can give steering that is almost to quick. Has anyone put a regular (non-quick ratio)3rd gen steering box in. Would'nt this give a much better road feel with out the twichyness. I'm not racing I just want better road feel.
Any comments?
 

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This Gen III information was in the Saginaw files. These are the Gen III 14:1 power gears.

1982, 83, 84
Alpha Code WN, Level IV, 14:1, 24-30 inch-lb valve

1985
Alpha Code WN, Level II, 14:1, 24-30 inch-lb valve (Note, Level IV in now a 14:1 gear)

1986 through 93
Alpha Code JL, Base Model, 14:1, 20-26 inch-lb valve

The Alpha Code is a sticker or an ink stamp on the die cast end cover or the die cast top cover. It was an assembly plant aid to identify the correct power gear for the correct job coming down the line. It wasn't designed as a long lasting identifyer.

The later Gen IIIs (86-93) will have a lighter effort valve than the earlier ones.
I am not sure how you determine if a Camaro is a Level IV or a Level II or a base.

Jim
 

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I think the over sensitive complaints come from 2 sources.

The wrong combination of steering arm/pitman arm causing the steering to be too quick. If you have the short steering arms and the long pitman arm its not a good recipe.
Or not having a good alignment.

Remember this steering box came on a car from the factory, it could not have been too quick or sensitive. It was a regular production car. And if I am not mistaken the gear ratio is the same (or close to it) for the stock quick ratio and the iroc.
 

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Discussion Starter #5
"Another popular swap candidate is the third-generation ('82 to '93) Z28 Camaro or Pontiac Trans Am steering box. In the application chart, you can see the WS and XH boxes (among others) offer an excellent 12.7:1 fixed ratio. What is not so good for A-Body, early Camaro, and Nova owners is the third-gen Camaro box's limited 64- to 70-degree pitman arm sweep."

These magazine articles usually have so many mistakes you don't know what is correct.

The above quote would only apply to the 67 camaro with a pitman arm sweep of 87 deg. The 68-81 have a 67 deg sweep. Does this mean the XH code steering box with 64 deg sweep would be limited whereas the WS code steering box with a 70 deg sweep would be the better choice? Is the WS the non "IROC" box?
 

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Discussion Starter #6
I should mention the quote comes from the above Car Craft web article.
Thanks Steiner.
 

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All I can say is that I've got the remanufactured Cardone 27-6550 box that is specified for '88 Monte Carlo SS with sport suspension and '90 Z/28 with sport suspension and I friggin' LOVE it. Just got back from doing some break in miles on my new engine and tranny today. I replaced a practically brand new (although over ten years old) Year One fast ratio stock effort box.

You'll notice that the box is specified for two cars which had different sweeps stock. I believe they just put the widest sweep in the remanufactured box and specify it for whatever. The 27-6530 is for a non-sport suspension car. Same ratio, less effort. Not good as far as I'm concerned.
 

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Discussion Starter #8
You don't feel your turn radius is less??.
One other question. I've also read that the original power steering pump is not adequate for the new box. If I was to replace the original with a newer power steering pump the fittings should match the new box right?(Wouldn't need to worry about the Lee fittings). Would there be any problems fitting a newer style power steering pump in my 69 sbc.
Once I get all this sorted out I'm definetely going to do the switch.
Thanks
 

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You don't feel your turn radius is less??.
One other question. I've also read that the original power steering pump is not adequate for the new box. If I was to replace the original with a newer power steering pump the fittings should match the new box right?(Wouldn't need to worry about the Lee fittings). Would there be any problems fitting a newer style power steering pump in my 69 sbc.
Once I get all this sorted out I'm definetely going to do the switch.
Thanks
I don't notice anything different with turn radius. The steering wheel turns exactly as far as it did with the Year One restoration fast ratio box.

What changed on the pumps was the high pressure fitting. It went from a male flare to a female inverted flare around '73 or '74. So, almost all pumps are rebuilt on later cores. If you want to use stock style hoses with female end you just get a Weatherhead 1563 inverted flare to flare adapter fitting and get the Lee inserts. Or you can use a '74 Nova high pressure hose but you still need the Lee fittings. You need to use transmission cooler hose for the return as regular rubber hose gets eaten by PS fluid. Rebuilt pumps are only around $50 and should be set up for higher pressure than the original ones. I am running a rebuilt pump purchased last year with mine and it does fine. If you ask for one for a '69 Camaro it should be right as the only thing that changed later on was the shape slightly (still fits the same) but it'll output higher pressure than an original.

What changed on the late model box was the input shaft diameter and the hose fittings went from SAE threads and flare to metric threads and o-ring style. The Lee fittings are cheap and convert them back to flare so you can use original style hoses. The threads are close enough that the SAE hoses fit and since the flare does the sealing not the threads it is fine.

Here is a thread where I laid it out for someone else. I need to note that am only passing on information that others have done and am not taking credit for it. Big thanks to those who put the stuff together.

http://www.camaros.net/forums/showthread.php?t=178441
 

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Check your outer steering arms.
If they are the short arms 5.25" from axle center to tie rod end, and you use the long 5.75" pitman arm, then the 12 to 1 ratio is going to yield around 2.25 turns lock to lock.

If you have the long pitman and long outer arms 6", with 12 to 1 box, the lock to lock is going to be almost 3 turns.

2.25 turns is rather fast, but with stiff feel valving, a 14" steering wheel, and good alignment it works well for me but some guys will feel it's too quick. The fix would be to put a short PS pitman arm on it. With the long outer arms, the steering will be fairly slow, even with the long pitman.
David
 

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Have to agree with these comments, its the higher effort more than the quicker ratio that makes this box so nice. I got mine at junkyard, XH box. No difference in turning radius. You will need to make a custom pressure line with new fittings, its very easy actually. Use the stock return line with the Lee adapter. And be sure top grab the valve and spring out of the power steering pump from the donor car at the junkyard. I just did this whole swap a couple years ago for a total cost of around $150.
 

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VARIABLE RATIO ! I have the AGR steering box. I tried the 12:1 ratio box and did not like it. They changed mine to the 13 -16 :1 variable ratio box and I am much happier with it.
 
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