remove old engine and install new engine including exhaust and accessory brackets and pulleys. everything should fit. be sure to use a 454 flywheel with 454. smallblock flywheel will work on 396,402,427
293?
no
No
they never put a big block in the G body in the 80's.
No it cannot
If your P U has a big Block,Yes. If its a small block,Its a BIG job.
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.
Both engines are Chevy small block so modifications should be minor.
ford 460 big block
Carefuly
yes
any 454 will fit under the hood of the 67 as long as it's not the tall block 454 as most of those were put in trucks.