One of the valve covers.
Many. 348 would be a small block, whereas the 454 is a big block.
It would never hold together.....
That would be a big block. If you are referring to the diesel engine, it is based on the Oldsmobile rocket block, and shares nothing with the engines usually referred to as big block or small block.
That would be a 350 small block. That's three hundred and fifty cubic inches.
That would be a small block.
That would require you to take the engine apart and inspect all the engine bearings to know for sure. It would be easy to notice a spun bearing.
Yes, but Chevy did not make a 400 in 1985. If the car already has a v8, it is already a Chevy engine. If it is a v6, it is still a Chevy engine, but you would need v8 wiring, brackets, exhaust,etc to make it work.
You could have a cracked engine block.
The 350 engine was introduced in 1968. A 1955 small block would be a 265 or 283.
Darn near anything can be made to accept a small block Chevy. The easiest conversions would be to select a vehicle that was offered from the factory with a v8 Chevy engine. Try a 1974 Toyota Landcruiser AKA > "Chevota"
A cylinder is misfiring.
That would be the very first v-8 Chevy made. 265 CID engine. It will be hard to find. The good o 350 engine is a good 1 to modify also. IF DOON RIGHT.