yep the ac eats HP, buy a belt for the same truck without air.

Chester,

If the AC is not on, it doesn't eat any horsepower (or an
least nothing significant). So instead of trying to redesign
your truck, just turn the AC off, or if you are really
worried, unplug the electrical plug from the compressor. The
figure of 30 horsepower is ridiculously high, even if the
compressor is running full tilt on a hot day (full home
systems, which cool much larger spaces don't use even even
10 hp motors). Also, I believe a 1994 Silverado actaully
turns off the compressor when maximum power is required. If
not, there are ways of doing this yourself (like adding a
switch that turns off the compressor based on manifold
vacuum, or just a plain old manual switch). Either way,
there is no reason to scarafice the ability to cool the
truck to increase performance as long as you are willing to
turn off the A/C when you need maximum performance. If you
are really, really worried about maximum performance, then
you should remove the entire A/C system and save the weight.

Ed