yes, there is plenty of room for it, you will just have to change motor mounts if your car is a V6.
400 small block 2brl was the basic engine with a 454 big block optional
You can't... There's not enough steel in the cylinders to bore it that far. If you want a 454, you need to by a big block 454 Chevy engine.
Many. 348 would be a small block, whereas the 454 is a big block.
180.
Yes.
Orange.
Carefuly
yes you should have plenty of room in the engine bay. you probably will need to change the motor mounts and get a different tranny but other than that you should be fine.
There is such a thing as a 454 truck engine, also 454 passenger car engine.
yes
A 383 is a .030" over bored 350 small block with a 400 crankshaft. The 454 is a big block.
No, the Chevy 454 has a long stoke and requires a big block. However, it is possible to build a 454 small block using aftermarket parts. You'll need some high flowing heads to make it work.