Big block engine is a term used to refer to a larger engine usually around 340 or more cubic inches. They are usually V-8 engines and are used in larger trucks or cars.
351 Windsor is a small block, 351 Cleveland, is a big block. The 351M, (modified) is a small block, with big block heads on it.
That big black one going from the battery to the engine block.
One can purchase a Chevrolet small-block engine from the original manufacturer or your local car dealer. One can also purchase a small-block engine from eBay.
Chevy does not cast the block size onto the block. once you see a big block compared small block you will know the difference. at a glance with nothing to compare it to id say look at the head. small block heads have one exhaust port close the ends and two exhaust ports real close together in the middle. the big blocks exhaust ports are evenly spaced and not close together at all. If it is a 350 or smaller it is a small block. If it is a 396 or larger it is a big block except for the 400 which was made in both small block and big block configuration.
No, they are different. Now, you might be able to use either one with either engine though. But from the factory they were different.
There is one on each side of the engine block just above were the oil pan bolts to the engine. The plugs are in the center of the block on both sides.
I've seen a 572 fit into one with no modification to the existing fenders or hood 502 Big Block
One can purchase a big engine from the following sources: Engine First Limited, Engine Factory, eBay Motors, Big Engine, Chevrolet Performance, to name a few.
Longer block length vs. a V-engine.
It isnt the same, but Nexia 1.5 engine was made out of Opel Kadett's 1.3 or 1.6(small block 1.6 which had 82hp not the big one which had 90hp).
Assuming this is a 4.3 engine, remove the block coolant drain plugs. There is one on each side of the block. The passenger side is towards the front of the block and the drivers side is towards the back.
One of the hoses that connects the engine block to the radiator.