get a big block or bore it 54 over
4.165"
4.155"
It's a 408
421 c.I.d.
It's a .060" over 350 with a 400 crank
a 400 small block Chevy has a 4.125" bore.
408
1981 was the last year the 400 small block was made.
Yes.
The firing order for the Pontiac 400 engine is that the small block powers the big block.
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.