If you are doing a cam base lobe / TDC clearance set up and measuring travel of the rocker in comparison to valve travel by tightening and loosening the rocker bridge bolt , with all the spark plugs out , do #1 cyl , but have the other 5 cyl pushrods all removed , for ease of engine rotation ...
really want to get barnyard ... after above and you have shorter pushrods in , get #1 cyl to TDC , so cam is on baselobe , while increasing and decreasing clamp of bridge rocker bolt use a feeler gauge on the valve side of the rocker till you have no clearance , loose rockers are top end power...
I dont know how much you want to do yourself , or leave to the machine shop , you need the deck height from the crankshaft and to know how the head is set up .... just an after thought that might save you some $ .... Its a cheap jury rig work around from race car days ... remove the cyl head ...
You have members here suggesting something in the valve train binding well without a doubt , and I believe its happening at maximum cam lift , We do have a variety of unknowns here , Being a stroker motor , thats just referring to the crankshaft throw in comparison to the factory crankshaft ...