fordgasm- I have a feeling those gears werent installed perfectly if it was profesionaly done I would take them back and have them checked especially if the sound is a rolling, vibration sounding feel he he.</P>


Hmmm the vibration on the other cars if there is no vibration felt on the shifter when at stand still and revving then its probably something easy. Heres a couple checks I would do to start off with, harmonic balencer(fluid dampner) most people miss these untill they go kaboom check that, sounds like the drive lines have all been replaced I hope nobody is rollin around with fix a flat in their tires check that.Most of the time my vibrations have been tires that need to bereplaced or a loose driveline.It can get more complex if its not the problems we have touched on so far. </P>

 

I've heard from reliable sources that it is either:</P>


a: your driveshaft</P>


b: your gears installed incorrectly</P>


just go back to the shop where you had it installed and ask them</P>


</P>