So I installed a new spec+3 clutch, slave cyl, springs, struts, umi adj tbar, and swapped my ls6 oil pan out for my stock ls1 pan. The car ran great for 2 days then I started it and it started making a horrible metal klacking noise and got very hard to shift. Any ideas? I'm leaning towards slave cyl bolts came loose and maybe fell out? it only does it at idle(makes that horrible sound) even when i try to start it. thanks, brian oh yeah for those wondering I swapped the pans because my car sat really low and the roads reached havoc on the ls6 pan. i had to take the windage tray off the ls6 motor and swap the oil pick up tube to get the ls1 pan on, but i didnt interupt the torque of the main bolts.