Quote:
Originally Posted by Ghost Rider
I know this is a stupid question, but what is the definition of a "big block" as opposed to a "small block"?
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It refers to the bore spacing and deck hight of the engine block. On a small block the bore spacing is 4.4" vs 4.84" on a big block. I can't find accurate information on deck hight. But anyway, the larger dimensions of a big block safely allows for a larger displacement.
Quote:
Originally Posted by ROD1
I think to get anything over approx. 400C.I., a larger engine block is needed.
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no, the LS7 is equal to 428 cu and is a small block. I believe the upper limit is between 454 and 500 cu for a small block.