Thanks to everyone who replied on this. I finally dug into it today ready to check wheel bearings and spindle bushings, but went for simple stuff first checking the brakes. There wasn't any anti-squeal grease on the back of the pads, so I did that first, and also checked for binding calipers...
Interesting thoughts. I replaced the tie rods ends and haven't really aligned them to the right spot yet. I didn't see any scrapes on the wheels though. I didn't have any noise from the bushings when I tore the truck down - in 2006! I'll check easy stuff first. Much appreciated.
From the posts, I am planning to look at the spindle bushing.
I have a video link here where you can hear the sound loud and clear!
https://photos.app.goo.gl/tkGzCuvNPeEKM63k8
I could use some guidance on a loud squeal coming from the front right wheel of my '76 FJ40.
This is a frame off resto and today was the first test drive around the neighborhood. Axles were redone and bearings were replaced. I have new brakes all the way around - discs in front, drums in rear...