i got my pacesetters long tubes installed installed on my 2005 silverado 5.3 about a month o so and i keep hearing this noise like something is loose everytime i hit like a bump it makes that noise and it comes i belive from my passenger side . I did not have this problem when i had my shorties on! what do u guyz think it could be?

 

check how close the header tubes are from the frame rail.

 

Also, how close is the exhaust pipe to the crossmember?

 

i know my primarie is no more than an 1/8 inch from the framerail. is your truck 2x4 or 4x4? maybe you got the wrong ones? just trying to throw some ideas out there.

 

loose exhaust hanger maybe?
the passenger side primaries are about 3/32" off the framerail but they'v never hit/rubbed. no signs on the headers or the framerails indicate it. maybe you didn't torque down the trans x-member bolts well enough? that'd be no bueno

 

my truck is a 2wd . it just seems to rattle alot i was thinkin it was my exhaust but i unno. i got true dual exhaust n **** but yea if it is touching the frame what should i do? or the cross member what should i do?

 

Have who ever did the exhaust work fix it.

 

i had the exhaust done at one shop plus and plus where i got my headers installed at this mechanic shop all they did was take off the shorties and cut the cats off installed the long tubes and got 2 pieces of pipe and welded it. so should i redo the whole piping over again?

 

Have you found where it is hitting?

 

it sounds like its hitting close to the motor . it sounds like from the right side header .i dont know if its hitting the frame . Or maybe it could be a motor mount.. is thier anything i can put between the frame and the header so it wont hit and maybe start crossing out the possibliites?>