If it is in a car, pull the motor. A truck, unbolt it, pull it out, clean it, and re install it. However, make sure that you leak is not from the back of the intake, or valve covers, or, the rear main seal, first.
Cylinder heads are installed on a Chevy 454 big block engine by placing the gasket down on the engine block and positioning the heads over the marking tabs. The bolts are then installed and torqued to specs in sequence.
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.
no
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
Big block? Small block? Displacement? Not every V8 manufactured by GM is the same.
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.