Sometimes you can sparay some WD-40 down the valve stems. Remember to turn the motor over by hand, as you could crash a valve into a piston, causing a lot of physical damage.
When the center exhaust valves are side by side (siamese), it's a small block (EIIEEIIE). Big blocks are symmetrical (EIEIEIEI).
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.
yes
Yes.
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
Chevy to Chevy...yes.
It is a small block
Yes it can, you will also need the big block pickup tube
no
It is a small block.
no
No, they did not. The smallest big block Chevy is the 396. They also made a small block and big block 400.