Or use a Rack from a S197 Mustang. On the FR500C variant , Ford revised the spool valve in the rack to increase effort and driver feedback This can be purchased over the counter from FRPP. You can drive these cars at 170mph and still swing a pair of 315/30 x 18 tyres in the carpark
The racks tend to use a torque rod to transfer the initial rotation from the steering shaft to the spool which was obviously to light in these mixtures of components whereas other lighter steering pumps/orbitrols use spring steel curved plates to initially move the spool. Heavy truck pumps/orbitrols use torque rods also but are much heavier. Knowing what to mix and match is the secret.
I'm trying to get the twitchy steering calmed down on the FIL's '52 Chev with a SBC 350/ GM pump and a Mustang II rack, not sure on the lock-to-lock ratio on the rack but I will know shortly. I have the pressure reducing kit and flow restrictor on order and am not sure of the best path to get this resolved. Can I safely do both at the same time at the recommended 1000 psi for the first test drive? Thanks
@MarshSt I used the pressure reducing kit that's installed in the pump, and went down to 850? psi and was happy with that right from the start. I had driven the car with manual rack for 20 years, and did the PS as a help for my planned around town driving. This one Borgeson Universal 899001 - Borgeson Universal Power Steering Pump Pressure-Reducing Kits
It is not entirely pressure that you need to tune with this setup. It is also flow. GM/Saginaw power steering pumps are well-supported in the aftermarket. There are output fittings (the big nut on the back of the "ham can") that have various sized orifices to limit flow. They are typically about $35, so tuning won't break the bank. I would start here, since this is the specified part: https://pitstopusa.com/i-24000676-d...ford-rack-and-pinion.html?ref=category:134688
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