Quote:
Originally Posted by Willys47
the 454 was externally balanced.The flex plate and harmonic balancer were used to get it to run smooth, if you use one of them on a internaly balanced motor it will shake.I bet it would come apart sooner than later aswell.
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Correct he is. You can knock the weight off if you want to or replace the flex plate and sell that one to a person who needs it.
If you have a 383 stroker, 400 or 454 you need the counterweight though.