cylinder head installation

you can but the problem is part of the intake gasket sits on the head.you would be risking a leak.

not ever on a small block gm 5.7 or any other small block engines.It is harder to clean off all the intake manifold gasket materials,and you want to check the surface to see if it is good and flat,after cleaning to prevent any problems with leakes in the future.And the ends of the intake should be resealed.I,ve done a few Ford engines like this,not r&r the intake,but wasnt as easy,as doing the removal of the intake on the 390 cid.And didnot save any time either!