Steve,
Cleveland:
9.2" deck height
2.75" main journals
timing chain shroud part of block
Windsor:
9.5" deck height
3" main journals
timing chain has a separate shroud/cover
A Cleveland came in both 2 and 4 bolt mains, a Windsor came in only 2 bolt mains.
Of course, the heads are an obvious difference, the Clevelands being much larger. There are other subtle differences, but those listed above are the main ones.
The best description for a Cleveland would be a 'mid-block'.
Here's a looksee at the blocks (Cleveland left, Windsor right):
Michael
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