Hi,

If Im from a roll or from a stop, I get this weird rubbing noise from the middle under my truck. It is between 2 - 4. It will only happen when I put the petal to the carpet. Thanks for your help.

 

Blower belt slipping

 

It has nevr done this before I blew my plug and got a new cylinder head. ARE OYU SURE?

 

I hear it on mine too...my local SVT Rep said it was the transmission "slipping" into gear. Apparently it does this to provide a smooth shift transition, unfortunately at the sacrifice of wear and tear on the transmission.
My truck has done it since it was new..

 

I can't see a tranny making that noise only from 2-4 but if so then you really need to get a shift kit and chip reprogrammed for that.

 

Could I have your VISA card and i'll get that taken care of right away! hehehe