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#1
01-03-2005, 04:54 AM
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Re: how to id a big block?
427 is internally balanced, and 454 is externally balanced. If the balancer has a counterweight cast in the back side, it's a 454 balancer. Look for engine codes on the pad in front of the pass side head. Based on the cast date, if it's a CE, it could be either a 427 or 454. If it's a standard engine build date/application code, it would be a 454.
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