NO.
Depends on the year. On the pre-fuel injected motors, all Chevy V-8 engines used the same distributor. Use some common sense, a 1968 distributor is not the same as a 1980, but you get the idea. Use one from the same era as your vehicle.
1,8,4,3,6,5,7,2 all small block and big block firing patterns are 1,8,4,3,6,5,7,2 for Chevy
Yes it will fit. This distributor will fit all small block and big block Chevrolet engines.
No the distributor gear that is on the end of the distributor is to small for the big block cam shaft.
Actually the complete distributor will fit from the small block to the big block.
Clockwise.
Clockwise.
It is a small block
It is a small block.
Some do, some don't. The distributor, starter and alternator fit, the water pump does not. The mounting brackets are all different.
yes
Yes.
The 400 Chevy is a small block engine. The 400 BIG BLOCK Chevy does not exist! 402 big block Chevy does. it seems in the early 70s Chevy put 402s in their pick ups and they had 400 badges. this opened the can of worms known as the non-existant big block 400.