Does my 87 olds have a harmonic balancer or is it internally balanced?
Yes it has a harmonic balancer.
OK now what is this thing and where does it go?
My car knocks, I'm told there's no balancer on it and there should be. Would this be why?
Right on the front of the crankshaft.
No balancer will cause engine shaking not knocking, if it is knocking it could be a rod knock.
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