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Pure American Muscle
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684 Posts
I believe it is important to have it done. If you want a long lasting and easy rev'ing engine. In any type or perf. type build I would say it is a must. Some places sell rotating assemblies that they will balance for you. Just some thoughts but I would say yes have it done for you.

Chris
 

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Member# 3287
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2,625 Posts
Yes. I had the internals, harmonic balancer, and flywheel balanced together.

I then swapped flywheels to one of those "400 balancer plates" you see for sale and a 350 flywheel. It about shook the car apart at freeway speeds. I took that junk off and put a new Hayes flywheel on it and it's as smooth as a baby's ...whatever.
 

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2,240 Posts
Well the way you worded the question. The easy answer is NO. They do not HAVE to be balanced but, all engines (rotating assemblies) SHOULD be balanced. If you want a smooth running engine that doesn't eat up bearings, etc.. balancing is money well spent doesn't matter if it's a 302 (ford) or a 454 (chevy) all engines should be balanced.

Royce
 
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