Yes it does.
yes it does from the factory.
hydralic
typically no it should be hydraulic lifters unless someone has changed the cam and lifters in the engine.
Not if you did it right the first time.
370 HP had the big heads (2.02 valves) and mechanical valve lifters, 300 and 350 had hydraulic valve lifters, but the 350 had the bigger heads.
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.
yes it has hydraulic lifters.
YES, Unless someone has installed a solid lift cam sometime are another.
It has hydraulic roller lifters.
The hydraulic lifters do not require adjustment nearly as often as solid lifters.
Not that difficult but the 350, 5.7Liter has hydraulic lifters and you must be sure the oil hole is lined up with oil hole in block
Yes it does. Chevy did not use solid lifters in that engine.