Adjustable strut rods making terrible sound 74 Swinger

George Lawicki said

I'll take pics of my suspension when I get home. Yes the LCA pivots were tightened at ride height. I did notice this...bouncing the suspension doesn't seem to create the squeek however braking say from 10mph does. To me, it seems more pronounced on the p side but it's definitely on both sides

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Pictures would really help. Did you install the metal pillow blocks so the shoulder is toward the K frame? If the shoulder is backward the end of the strut rod mount could be moving in the K.

Ricks70Duster340 said

I have exactly the same issue with mine. I have QA1 LCA's and the PST strut rods. Mine sound like a squeak/rattle at lower speeds but especially after applying the brakes. Almost like when the weight of the car is moved toward the front something gets loose and rattles. I tried QA1 strut bars but the LCA end of the bars was not 5/8" and it was impossible to stop the rattling. PST bars fit as they should.

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Ok, you have no idea if you have the same problem. The OP has a squeak, not a rattle.

And here’s the deal, torqued properly the 5/8” thing shouldn’t matter. At all. Not even a little.

If you have installed QA1 and PST strut rods, changed nothing else, and had the same noise with both, it’s not the strut rods. The odds that two brand new sets of strut rods, from different manufacturers, with different designs, make the same exact noise is just about nil.