No it is not. Before it would hurt the valve train, something would have to happen at a very high RPMs. The timing chain going out will not hurt the valves are the head.
No the 5.4 V8 it is not an interference engine.
Either a 301 (standard), or a 350 or 400 V8
6.6 liters = 402.756711 cubic inches This is GMs 400 V8
If your talking about the 400(m) style motor then no it won't. The 400 has the "big block" bolt pattern, you would need a 4 sp from a big block motor to fit.
is 3,9 an interference engine
You don't.
If it's a Chev V8, then it's at top rear of the engine, next to distributor.
A Chev 5.0 L V8 is actually 302 Cubic Inches. By todays standards that's a small V8.
small block and big block motor mounts are the same, so you should be able to take V8 motor mounts from most any Chevy engine bay.
Yes.
No v8 has 8 cylinders
According to Toyota repair manual.... during assembly being carefull of camshaft alignment marks in relationship to crankshaft or damage to engine will occur..