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#2
01-03-2005, 02:25 AM
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Re: how to id a big block?
Im no expert but a 512 block can be either a 454 or a 427.But with a "L" casting date im guessing 454.What would help is if you know the info stamped on the deck ahead of the drivers side head.
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EX 81 YENKO TURBO Z owner 
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