HELP! I'm running out of ideas

I posted a thread a few months ago about the sensation of my rims falling off while going into a turn. Every time I go into a significant turn I feel a very serious shake coming from the front-end like all of the lug nuts have fallen out. In my earlier post I received some great suggestions and so I've decided to make some upgrades to the front end in the hopes of fixing my issue along the way.

My car is a 67 barracuda, with a 74+ K-member 360 with a 727, front disc brakes with 74+ spindles, power steering.

I recently replaced the following: Brand new QA1 lower and upper control arms, QA1 dynamic strut rods, new ball-joints uppers and lowers, QA1 single adjustable shocks, QA1 heavy duty tie-rod sleeves, new Borgeson Powersteering unit with new steering shaft coupler.

I followed all the instructions and torqued everything down to recommended specs with the vehicle at ride height. I pre-loaded the bearings as per the manual (tighten to 90 inch pound and then back-off one slot if I remember correctly).

I took it out for a test drive and the shake is still there.....

I'm starting to run out of ideas, the only thing that I can think of is that the inner/outer bearings in the front discs are toast. I checked to see if I could feel any play in the wheel, but it feels solid with no side to side or top to bottom movement. I'll have to check the Idler arm for play as suggested on my earlier post, but I'm pretty sure there is none.

Can bearings go bad without being able to feel play in the wheel?