psc specimen - SportsID
PSC XD STEERING BOX PSC p/s pump Oem gas truck cooler All lines converted to hydraulic gates g2 hose Rare parts tie rods Cognito idler and pitman supports 4 spline standard pitman (hd pitman will not allow enough threads on the bigger box, and not allow the support kit to be used) Fox custom steering stabilizer Valvoline synthetic fluid I've went though several boxes and pumps on my LBZ. Currently running a blue top that seems to be developing some play in it. I've done the LML pump upgrade once and even it died after some years.
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Went with the PSC pump this last time about a year and a half ago and by far the best results. It sounds like the PSC box is a good upgrade, but that leads to new pitman arm, which can lead to new center link etc... I would rather buy once, cry once, than piece meal parts which might now match / work well together. Thus, the questions about the different center link designs.
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get with lance at PSC he will take care of you. with 40's you have to do something to the steering your stock gear box won't handle that, although your stock pump should be a saginaw which is plenty. Nothing beats PSC's box and pump. The pump puts out higher flow than the GM pump and their box is the only actual upgrade over the OEM box. The internals in the PSC box are bigger (shaft, bearings, gears etc).
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Ive seen really great results with ATF+4 in Saginaw systems in jeeps (stock parts, AGR, PSC, ghetto rigged setups...) the ATF+4 always reduced steering effort and never boiled over. Just looking at published numbers, the redline ATF C+ may be the best fluid out for power steering. We only use and install PSC boxes in these trucks. The PSC boxes seem to hold up the best in terms of tightness and the steering effort feels reduced compared to an OEM box. PSC makes a heavy duty box. They're proud of them, but my buddy that put one on his LMM dually with oversized tires on it says it drives and turns better than stock.