LS Power steering pump, Hydroboost vs non-hydroboost

[SierraMtns]

Originally Posted by Captainfab

I hadn't thought about it but that makes sense since a R&P operates at a lower pressure than a steering box.

Originally Posted by Pontitruck

Chiming in here to learn as my swap 5.3 has 3 fittings and I was trying to determine if I could just cap one off and use it or needed to get a 2 port pump. I’m assuming my donor had hydroboost.

Yes I am clamping off the upper of the 2 return lines.