The trap of the industrial / motorhome 318-3

No intention on thread high jacking,,,, but Are there any other various pit-fall blocks we have to be concerned with?

People talk about school bus's with 'supposedly discontinued 413's, etc.

Besides rotating the opposite direction, how about boat blocks (360 or big block)? Any thicker cylinder walls? Can we use them? or avoid them- Is the alloy the same?


Only real caveat I know on marine CCW engines --other than water jacket damage on ones with no heat exchanger--is the oil slinger slots on the crank seal go the wrong way.