Loud bang sounds like someone is under my truck hiting it with a hammer

[ripperf350]

Ok so I lifted my truck about 4 months ago and it made this noise every once in a great while, this was with the stock tires. On Monday I had 4 Wheel Parts put some 35" FC II's on her and do the alignment. Now almost every time I make a turn and there is some small or large bump I hear a bang sound that sounds as if it is coming from right under the driver seat the sound is almost as if someone is hitting the bottom of the cab with a ball ping hammer I have checked everything in the area and in the front end to make sure all was tight I also had my buddy turn the wheel both ways to make sure all components cleared each other I also get the bang noise every once in a while on a strait away during or right after hitting a bump in the road I am stumped and so is my dealer and 4 Wheel Parts so if anyone has any suggestions I would love to here from you Also note that it was just in for head gaskets and the dealer did a cab off job they messed a lot of stuff up and i ended up going back to them with a full page of things they needed to fix i.e.: body ground not connected residual fluid all over a huge gouge in my door that they tried to paint and over sprayed the rest of the truck so it could have easily been something they did during the cab off head job I wish they would help me diagnose this bang noise without the chance of being charged an arm and leg
THANKS IN ADVANCE

[DoubleDpsd]

welcome man! make sure you put me as your referal =] Don't forget you're just up the 101 from marc. great guy and super knowledgable...and a lil' ****y :fawkdance:

[ripperf350]

It was Morgan Hill Ford Store that caused it. I checked my body mounts, the driver side front the one under your feet was at 25lbs the middle one was at 30lbs I tightened both of these to 90lbs because the rest were at 110lbs and the service manual says to put them at 60 lbs. Took her for a test drive bang sound is gone. Drove to the in laws about 45 miles still no bang sound. Such a relief but I'm extremely pissed off at the Ford Store in Morgan Hill going in there tomorrow to give them a piece of my mind and ask for the contact info on the bureau of automotive repair and Fords Corporate office. I'm sending a detailed letter to both of them, I doubt it will do any good but hopefully they will get some quality control for the next guy as for me I'm going down the road to Hollister's Ford dealer

[DoubleDpsd]

sweet. make sure you specifically ask for and speak to marc. he'll take care of everything and take you out for some burr's when you're done.

[mschn99]

First of all, Welocome to the ORG....

Ive heard a lot of great things about the Ford Store's sales department, but not much positive about thier shop, particularly on the diesel side. Feel free to bring your truck in to me in hollister any time, and as david said, make sure to request me directly. You can also contact me any time on here via PM.

The clunk could be related to a lot of things if it does come back and wasnt the body bolts you tightened.... It could be a sway bar link or something along those lines that seems tight but isnt, ....plus sounds resinate so they arent always where it sounds like they are coming from.......first thing i would do if it does come back would be disconnect the sway bar links from the frame and wire them so they cant hit anything or hit the ground and drive it...see if it will still do it...