Put 2" lift in front and got ????

[taz1]

Hi i put f350 blocks in my f250 and put a 2" lift in the front. i have an 08 f250 crew cab. i also put in a carrier bearing spacer so it not that. But i have a sound or vibration when i let off the gas pedal at 55-60 mph. and it only does it when letting off. and the sound is coming from the front of the truck. is it because i didnt get it realined yet?? and it doesnt vibrate the stearing wheel. its just a sound that i can hear when the radio is off. any idea what it can bee??

[HotRodDiesel]

I thought i read it was not related to the suspension. Backpressure or turbos doing something. I've got a 7" Icon lift and I notice the same thing you are talking about. Probably notice it more if you had an air intake. And again I might be all wrong. What the hell its Friday

[taz1]

But it never did it before just since i put the lift on!! its driving me nutts!!!

[HotRodDiesel]

Mine is evident also but haven't had any problems with anyhting other than the slight noise. It's only when you give it partial throttle or letting off correct?

[taz1]

only when i let off !!!