I am experiencing an odd noise under WOT. It sounds like a mild grinding noise. Nothing internal sounding though. its hard to explain. I recently replaced the front and rear sway bars with GMPP sway bars. They are slightly bigger and the front one had a more drastic bend in the middle. This bend puts it closer to the downpipe. My car has all new suspension components, new solid motor mount, new polyurethane inserts for the dog bones, and a polyurethane transmission mount, so I feel as though the motor is held pretty tight. Could the header be smashing against the sway bar? I had the short dog bones that ZZP sells and it made a really loud grinding at 1500-2000 rpm. I switched back to the regular ones and now it is make that same sound (not as loud though) at 5000 RPM and not at the lower range anymore.
Any ideas?
Mods: 1.9 rocker arms, headers and full 3" exhaust, filter strapped on to TB, ported blower, full-size intercooler, 3.0" pulley, LS7 lifters, and some other things im forgetting.
