Since i have turned a few screws on the pump I have noticed a vibration at my feet from idle to about mid power getting worse all the time and thinking its the clutch. if so whats a good replacement, wanting to up the hp a little along the way and someday make it to about 400hp. Luk, South Bend? Will the getrag hold out? The truck has about 175,000. W-250.

 

Engine/Transmission mounts look good?

 

could this possibly be hot spots on the clutch or?

 

Idle to mid doesn't sound like a slipping clutch.

Any gear where it's worse than the other gears?

 

Maybe it's the infamous getrag rattle, when you go into the next gear and lean on it and it shakes the truck