I just purchased the "complete" bushings kit from Summit, and having done this once before I know you can tighten bushings until they are virtually crushed flat. I was wondering if there are any torque specs to prevent damaging the new polyurethane bushings (if you're gonna do it, do it right!). Please advise!

 

What bushings?

The only ones that can possibly be "crushed flat", are the sway bar end links. For those, there are no "torque specs" (well, there are, and I have no doubt someone will come on here and quote page whatever of some service manual, but they ONLY apply to STOCK ones FROM GM from back when GM still supplied them for NEW cars, not poly, since the material requires different force to compress), you are supposed to tighten them until the elastomer part deforms to the size of the washers they are between or just very slightly larger.