Power steering issues (Pump or Rack & Pinion, or?)

I recently purchased a 1948 Chevy Fleetmaster coupe. I named him Mutt since he is definitely not a pedigree. I am currently trying to identify the various parts. It is an older restomod, so I don't have any details on it. An issue I have - when you make a left-hand turn while accelerating - it makes a loud squealing sound. I have checked everything I can think of and I can't identify the problem. I have identified the rack and pinion from a Chrysler 300M. Everything is mounted professionally and tight. I can't find anything rubbing. Mutt has a 327 engine and what appears to be the standard GM power steering pump. It seems odd to me that is only does it when turning left. Any advice, tips, or help is greatly appreciated. Somehow need to determine if it is the power steering pump or the rack and pinion. I don't understand why it only does it during left turns.

 

Is it belt squeal or something else?

 

It sounds like a belt squeal, but the belt is tight. Is there a reason there would be more strain on the pump / belt when turning left?

 

Shouldn't be might want to change the power steering belt and make sure that the pulleys are aligned correctly .

 

Thanks. I’ll try that.

 

Hope it works!

 

Over the years I have found that a lot of the "V" belt pulleys have the sides of the V part of the pulley worn away caused by a slipping belts over the years. Sometimes a new belt works for a short time. Sometimes a slightly wider belt works too (often machine drive belts are wider, sometimes you can get them in the correct length).
V belts are suppose to be driven by the sides of the belt and the sides of the V part of the pulley. If the belt or the pulley (or both) are worn out, the belt will sit at the very bottom of the V and tries to drive the accessories from the very narrow bottom of the belt & pulley contact point. That narrow bottom of the belt/pulley contact point does not provide enough drive for most accessories.

Once past the belt/pulley problem, a rack that steers harder in one direction then the other is a sign of a failing rack, but that does not make the belt squeal, it simply makes the steering in one direction harder, or jerky.