I replaced my power steering pump in my 1965 Biscayne with a fast steer box from a 1982 z-28(purchased from NAPA).

I also installed a new 1965 ps pump which makes a noise like there is air in the system.
I Turned the wheel from side to side about 30-40 times like I always do & the noise is still there.

I drove the car for the first time & the noise is still there & the wheel turns jerky.

What do you think.....bad pump or wrong pump pressure or ?

Don)