anyone know,before i lifted the truck it was fine,since i put a 6 inch suspension lift on when i back up the front end drops about 2 inches and the tires bow in like this / \ bad enough that on black top the drivers side even will leave a black mark,now as soon as i go forwards,as soon as it moves you can actually see the front of the truck lift up in place where it should be and the front tires sit perfect,it drives fine dont pull to either side even if you let go of the wheel it stays strait,but there has to be sumthin wrong right?,i cant see anything,,anybody have a problem like this before???

 

Did you have it aligned after you installed the lift? You always need to get an alignment after you take the suspension apart because it won't be the same when you put it back together. Get that done, and see if you still have the problem.

 

I wouldn't drive it until I had it looked at by a knowledgable front end man for loose lower control arm inner mount bolts or just plain shot bushings or other problems ...
... 'cause something is bad wrong.

 

Alignment will fix most of your problem but it sounds like you have bad bushings and balljoints for sure. If your knowledgeable about front end components try shaking down the front end to see where your problem is. If not, you need to get it to a show but its going to be pricey. I'd start with tie rods and balljoints.

 

Definitely check out the front end, but if you don't have any worn out front end parts it's probably normal. Twin i-beam/ttb front ends squat when you back up. Lift kits and bigger tires make it more noticeable.