1960s Strange noise after cold start ('66 Eldorado)

[Julien Abrahams]

A friend of mine has a '66;Eldorado that I got running and driving last year after being in storage for almost 30 years.Car runs well, but now has developed a strange noise that appears sometimes after a cold start. It goes away after about 5 mins of running.
He made a video for me to have a listen. I find the noise pretty strange. It is a california car, so it has the A.I.R. system. What could this be?

["Cadillac Kid" Greg Surfas 15364]

With the AC on or off?
Greg Surfas

[Julien Abrahams]

The AC is off. The AC is most likely not charged anymore, and compressor is not locked. I believe the compressor electrical connection is disconnected.

[Jeff Rosansky CLC #28373]

I don't see a video, but what does it sound like? Ticking, rubbing, buzzing, hissing?
Both sides, front/rear?

[Julien Abrahams]

I reposted the video, so hopefully it works now.
It is more like a swooshing, grinding noise. Hard to explain.

["Cadillac Kid" Greg Surfas 15364]

From what I hear Just sounds like a motor with a few miles on it warming up.
Greg Surfas

[Cadillac Jack 82]

Sounds almost like the fan blade striking the radiator.  That's definitely not an engine noise.

[TJ Hopland]

I would agree, not an internal engine issue.  Frequency seems a little high but how about the 'heat riser' valve?

[Big Fins]

Disconnect the belts one at a time and listen to it. That sounds like an alternator bearing or water pump bearing. Does it have an A.I.R. pump on it?

The engine itself sounds normal. I wouldn't touch that. It's an accessory or maybe even the torque converter, by the whirring sound it makes.

[Michael Petti]

Just a thought, but could your fan blades be hitting the transmission cooling lines when cold?

[Julien Abrahams]

Good suggestions that we can try. After listening a couple more times I also was thinking something in the line of bearing issue i the A.I.R. pump. Removing the belts one by one would be a good way to isolate the problem. Not sure about the fan blades.How to check if it is coming from the torque converter?

[Michael Petti]

The tranmission lines and/or their metal ends will show wear spots.