Small block differences per application

[QUOTE="EvanS, post: 1971842809,
With that said, I want to buy a small block 318/340/360, and I have seen engines out there that come from RV's and trucks that are either 318 w 727 or 360 w 727.
So, what is the difference in these engines when built for an RV or truck.[/QUOTE]

Besides the oil pan and pick up the exhaust manifolds are different, they use a bigger flywheel with the manual transmissions, the 727 that are used are heavy duty. The intake manifolds usually have an EGR block off plate on the four barrel manifolds used on the 360 s. Usually the heads and short blocks are the same as used in the cars until you get into the industrial motors which are usually Big Blocks. The early 318 used in the trucks had the forged steel crankshaft that everybody wanted at one time.
If you can find a E58 360 motor like used in the little red express that is a car engine that was used for cop cars.

Don't forget you'll have to get the aftermarket engine mounts or else change the K member if you were running a slant 6.