Re: PSI range for air shocks on a 69 2dr post
Yeah, I'd agree with the majority. No matter what, keep some air in them, 15ish, just so they stay pressurized, I think it helps the seals last. And I wouldn't go over 70 unless you found documentation they are made for it. They are safe/fine/normal, GM probably sold a million cars with them stock alone. Every El Camino got them for a long time, tons more "normal" cars, tons of wagons, Monte's...
The main thing is put a bit of air in them, check headlight aim. Then use them to keep car level, if you load it up, add air to get back to level, no more. They aren't for hauling more weight, just for leveling the car after adding approved weight.
1967 El Camino Malibu - Deepwater Blue
ZZ4 350, FiTech 600 complete!,Roadmaster tank, 700R4, Underdash A/C in progress, JGC Steering, 1990s truck serpentine.