87 F350 4 speed clutch stopped working

Hi guys,

Good news and bad news. The good news is, I bought an 87 F350 2wd crew cab with a 460 and a 4 speed. Super clean, runs and drives (well, drove) great. I had to store it for about a month while getting the driveway ready for plowing, but Rusty is dying a slow death, so I got the long fella out this afternoon. Now, I'd driven it a TOTAL of three miles since I bought it, one mile test drive and two miles home. The clutch always felt heavy, and short-stroked (only three inches off the floor). But (here's the bad news) tonight, it would not disengage the engine. The hydraulic resevoir is full. Can the clutch master cyl just crap out like that for no reason? Worked fine a month ago. Anyway, I drove it home the 6 blocks with no clutch. Sure is hard on stuff to make the starter crank the engine in gear!!

Any ideas?

Thanks,
Pete