A stock 454 is externally balanced so thats prob what u need.....unless u spend the money to make it an internally balanced motor. If it was just a standard procedure balance job...u need externally balanced
Flexplate Help!
Hi, I have a BBC 454 in my 70 Chevelle and I need a new flexplate, the engine has been balanced and blueprinted and Im not sure which flexplate to choose, they make an internal balance and an external balance, just wondering which one i should be using?
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