That engine has a ROLLER CAM AND ROLLER LIFTERS
Yes it does.
typically no it should be hydraulic lifters unless someone has changed the cam and lifters in the engine.
yes it does from the factory.
It has adjustable rockers.
no
It has adjustable rockers.
Yes, but you must keep the lifters with the cam they were originally used with.
NO. The 86 is not a roller block.
put the lifters up rite in a can of motor oil and let them sit for 30 mins
It's not recommended to change just the lifters. The cam and lifters should be replaced together. To get at the lifters, you can remove the rocker covers and intake manifold, loosen the rockers enough to get the pushrods out, then pull out the lifters.
That would be zero valve lash. You only use a feeler gauge on solid lifters.