ok i have a 75 chevy k10 w/ 3speed + granny gear i noticed 2 things first there's no low end power also when i go on uneven roads or come out of my drive way the clutch kinda pulls from out under my foot and it engages the clutch why is it doing that? in 2nd gear around 25mpg it kinda makes a vibrating sound now if i am in 3rd and at 25 mph it don't make the noise need some help Thanks

 

You have a 4 speed. Are you starting it out in second? I have never been a favor of toe play on a clutch. You need to provide more information as to why you think it is a power problem.

 

Right of the top of my head, read top post, but is the bolts loose on the bell housing? Reason I ask also is your driveway on a hill to the street where you back down a hill, and this happens? If so, check bellhousing bolts. also check the tranny crossmember.