Quote:
Originally Posted by 04 commemorative
I might be wrong but I always understood that Cubic inches had a lot to do with an engine being called a "Big Block"
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Back in the day, the 265/283/327/350/400 etc. had the same basic block.
Then the 396/427/454 etc. came out, different block, and were considered "big blocks."
Thus, we have the 400 "small block" and the 396 "big block," and the 427 in small or big block.