That sounds like the same cam I have, mine works fine but I gave up immediately on the old 750rpm idle. Mine idles smooth above 1000 rpm so that's where I set it. Make sure you don't have any vacuum leaks. Check your TPS to make sure it's adjusted correctly and bump the idle a bit, works for me. It's a little lumpy but it pulls like a mule from 2K to redline.
TPS

Oh yeah you also will want to disconnect your EGR valve. The extra vacuum from the new cam will pull it open prematurely and make your engine run like crap. Just hook it back up at emissions time (if you have that).

1986 4X4, 1991 22RE, 5.71 gears,ARB Rear, aux fuel tank, 3mm O/S TB/intake, engnbldr cam, LCE header, magnaflow w/2.25 exh. custom 4 color paint job :-P 33X12.5 Goodyear MT/Rs