Not Ranked
The only pro of a bog block is just that, "it is a big block or a 427". Bragging rights is the only advantage. A small block based motor can be bored and stroked to get the same cubes and equal or more hp, is cheaper to build, offers more combinations, will stay together longer in general if you beat on it, and it is less weight so it aids in handleing.
Now, there are plenty of powerful big blocks that are in well set up chassis that handle well, and have stayed together over time.
It depends on what is important to you.
Scott
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