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Suspension Some times the most over looked

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Old 08-20-18, 01:19PM   #31
Steve C
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Not directly related here, but a mention about 'valving' that might be of interest. When it came time for me to put power steering back on my Trans Am I choose to not use the original factory steering box. Instead I bought a AGR box with 12:1 ratio and upgraded from the standard 210 valving to a firmer 220 valving. Absolutely outstanding out on the open road with the firmer valving. The upgraded valving provides a firm road feel, like what you might find in a modern sporty car like a BMW, etc, yet for my needs it's adequate for around town and related parking.


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Old 08-21-18, 05:33PM   #32
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I found the later style input shaft seals 3 blocks away for $7.00. One steering box has the early style valving and the other has the later style. The WS6 and GC use the same style valving they use different adjuster plugs.The adjuster plugs can be swapped between the WS6 and the GC. I can't find an adapter for the later style pressure hose to the early style housing so I have to use a early hose and swap the fitting on the pump to use it. The GC housing I started with was junk one of the mounts was ripped right off the housing. I just used it for parts.
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Old 08-21-18, 05:39PM   #33
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GC adjuster plug on the left and WS6 adjuster plug on the right.
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Old 08-23-18, 02:27PM   #34
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How much power steering assist can be controlled by the fitting on back of the power steering pump. I removed a few of the fittings on some extra pumps I have. I noticed one has a small oriface and another has a large oriface. I was on another site where they drill out the oriface for more steering assist. I have a few more Pontiac pumps I can check.
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Old 08-23-18, 05:47PM   #35
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The GTO restoration guide says the power steering pump control valve was changed in 1970. I have a 1970 pump, it has the bigger oriface on the hose fitting. I have 65 and 67 pumps also, they have a small oriface on the hose fitting.
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Old 08-23-18, 08:07PM   #36
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The control valve on a Saginaw power steering pump is the fitting for the pressure hose, I didn't realize that. They sell them aftermarket. Rack and pinion requires less pump pressure. They have different pump pressures listed in a Motors Manual.
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Old 08-24-18, 10:18PM   #37
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I have both a 69 Motor Manual and a 79 Motor Manual. There is a difference in the pump pressure for the 69 and before power steering pump pressure and the later pump pressure. It breaks it down in make and model and years. The control valve can be removed with a 1 inch wrench. Someone could probably go into a self service wrecking yard and get a few different control valves to find out what works best for them. Power steering pressure hoses only cost about 15 dollars here. There are websites that tell you about the control valves
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Old 08-25-18, 12:02AM   #38
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My friend put a quick ratio box in a first gen bird and complained that it was to responsive as to if you sneezed your car would end up in the other lane.
Would different a valve fix this problem ?
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Old 08-25-18, 12:19AM   #39
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What power steering pump did he use? I remember you mentioned it was a 67 Firebird. One website says the control valve used for trucks allows more pressure. The Motors Manuals have higher pressure on Cadillacs. I have driven a 69 F body with a Third Gen Z28 quick box in it and it drove fine. There also might be difference in the GC steering box since it was made for a 4WD, it definitely has a different pitman shaft.
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Old 08-25-18, 12:56AM   #40
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GC and the 79 and up steering boxes use O ring pressure hoses. Those hoses won't work on a 67 power steering pump unless someone modified it. The later control valves will screw into the 67 power steering pump. I will post some pictures of some control valves and different pressure hoses.
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Old 08-25-18, 12:55PM   #41
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Think he told mee it was a jeep box
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Old 08-25-18, 04:17PM   #42
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My friend put a quick ratio box in a first gen bird and complained that it was to responsive as to if you sneezed your car would end up in the other lane.
Would different a valve fix this problem ?

YES !

At least on a AGR steering box. I can't speak about others but they can be manufactured with firm valving for precise handling and enhanced road feel. As mentioned I bought a AGR box with 12:1 ratio and upgraded from the standard 210 valving to a firmer 220 valving. On mine I'm speaking about power steering, not manual.

http://www.steerco.com/

Don't think it makes a difference but I do not use a factory pump. Mine is KRC and with a remote reservoir.

https://www.hotrod.com/articles/0712...rans_am-engine





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Last edited by Steve C : 08-25-18 at 04:31PM.
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Old 08-25-18, 04:21PM   #43
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1965 control valve on the right, 1970 control valve on the left. Also later O ring pressure hose. I don't know if they make different springs to change the pressure like they do on a Pontiac oil pump. Both the 1965 control valve spring and 1970 are the same. There is a website that says you can add shims to increase the pressure.
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Old 08-25-18, 04:24PM   #44
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From a 1969 Motor Manual and a 1979 Motor Manual
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Old 08-26-18, 05:25AM   #45
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Borgeson Street & Performance Series, 12.7:1 Ratio steering box

"This all new power steering box has a quick 12.7:1 ratio with firm modern steering feel"

http://www.borgeson.com/xcart/produc...t=0&featured=Y

What do you want to bet causes that 'firm modern steering feel' !


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