The only adjustment that there is on a clutch is the clearance between the TB and the pressure plate fingers. There is no other adjustment and if the pressure plate is not disengaging with the pedal adjusted to the factory clearance, which will be something on the order of 3/4 to 1 inch, then you have a problem with an improper pressure plate or a disc who’s lining is to thick, either way one or both are not the correct units.
It sounds like you haven’t been into the mechanical end of the truck much so let me point out, that the pressure plate is bolted to the flywheel and the clutch disc floats on the transmission clutch gear spline.
DG
