Re: Internally or externally balanced?
Talking about balances - my machine shop guy and I went thru a total of 17 new pistons before he found 6 he would use - he weighed every one and picked the 6 that was the closest. This was on a 351E. I used 379 pistons and had new rods made because the piston pin was higher towards the top of the piston - this increased the rod ratio which was a good thing - the cost of the custom billet rods was the bad thing. Probably would not do that again.
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