Cost for labor on stroker build?
machine shop pricing varies wildly depending on location and type of shop.
i'm in los angeles and did a stroker last year. the machine shop only handled the machine work on the block, i brought it in disassembled. total ticket was $1855
here's the run down: hot tank & mag the block, bore & hone with torque plates, align hone the mains, squared the deck, clearance for crank, installed new cam bearings & freeze plugs, checked the rods and crank.
i could've saved about $250 if i didn't have them use torque plates or install the cam bearings. but i also don't think they charged me to pop in the freeze plugs and check the rods and crank.
most shops around here charge another $200~250 if you show up with a whole motor just for the tear down inspection and clean up. figure on about $400 labor to knock it all back together so you'd be looking at probably around 2.2K in the bottom end.
then whatever it is to rebuild your heads. say the stuff is decent and just needs a little work, i like round numbers so lit's go with 1k on that.
so you're probably looking right around a 4K tab at the machine shop. without parts. or paint. and no broke off bolts or needing anything extra like thread repair.