Ive got an 88 5 speed 4x4 that has been sitting for about 8 months. Got in it today to move it... it fired right up I pushed the clutch in and shifted into first, when I hit the gas the truck just reved up and I thought I was stuck but I realized the wheels werent actually moving. I have normal pressure on the clutch pedal and it doesnt stick to the floor or anything but nothing happens when I hit the gas... also I can now shift into all gears except reverse without even pressing the clutch in. Any ideas or solutions would really help. Thanks

 

What is the fluid level in the clutch reservoir?

 

I did check that and it was up to level... I do not know if this is a related issue but when I turned the truck on the brake pedel had no pressure it went straight to the floor and that reservoir was full also

 

sounds like maybe the slave cylinder went bad try bleeding the clutch if it dont change at all then its bad

 

You could try maybe leaving the truck in gear and starting it without holding in the clutch, if it starts and doesn't just lurch forward you could have some internal issues, destroyed clutch or worse.

 

Yeah thats what happens I can start it in gear and shift without the clutch. When I parked the truck last year it was running okay the clutch wasnt too great but it at least moved.

 

Pull the grommet on the bell housing and have someone push the clutch pedal in and see if the clutch moves. Since it was sitting the slave may have stuck open when you pushed it in the first time.
Other than that, reverse bleed the system and if that doesn't work you'll just have to take it apart and inspect everything.