so i've got a nice 4-bolt 355 out of a truck (a 96 i think) all lined up to go in my 82 z28 with the stock 4 speed. i WAS gonna get a 5 speed to swap in at the same time, but i cant find one of the later year models after they sorted out the issues. so im stickin with the 4 speed. anyways. . . my question is whether or not the bell housing/etc will likely present a fitment issue. it seems to me like everything should be fine since its essentially the same shortblock. yes, no? thanks guys!

No bellhousing mounting problems.

I'm not as sure about the 4-speed, but I believe you need a 153-tooth flywheel, and your '82 flywheel will not fit an '86-later crank. Get one for the '86-'92 f-body V8 manual transmission application and you should be fine. The clutch will still need to be for the '82 4-speed, though (at least the clutch disk).

oh ok. i already have the correct flywheel. so i shouldnt NEED to replace the clutch. probably will anyway. . . im so stoked

Being as your '82 wasn't the hydraulic clutch release, it's more important to keep the engine from rocking too much. I strongly suggest you get a pair of ploy motor mounts from Energy Suspension. Or at the very least get new stock rubber ones. They're a pain to change, but not as bad as a binding clutch linkage. You'll also want a new pivot ball to screw into the '96 block, instead of just transferring the worn one off your old engine.