Join Date: Nov 2005
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Well since you have 37's i'll assume you have a lift (daa). Most of the lifts use polyurethane bushings, which are notorious for making pops, squeeks and all kinds of anoying noises.
If tightening things up like hhrecovery suggested doesn't work it may be because those poly bushings are dirty and that's when they make noise.
Some guys will use greasable shackles. Grease will attract more dust and dirt, but if you keep them lubed well the dirt can't get into them to cause the noise.
'04 F250 FX4, CC, SB, Zoodad, Innovative SCT XCal2, 4" MBRP, Airaid intake, 4" Superlift front with 5.5" Fabtech springs in back with stock 2" block delete, 18" predators with 35" Nitto's, Isspro gauges overhead. '00 27' Rinker Captiva Millinium, 454MPI Captains Call exhaust. '06 '33 Tahoe Transport. '03 Polaris Predator 500, K&N, WB pipe, '08 Polaris Outlaw 525 S.