longevity of a 408 will depend heavily upon the pistons themselves, where exactly they size on the skirt in relation to how far they pull out the bottom of the bore
rod length also plays into how far the piston gets pulled out the bottom of the bore. it's a very delicate balancing act as there's not much physical room to trade off between the players
longer rod shortens the ring pack and increases intrusion into the pin void (can it be avoided in a 408?)
so getting back to the where exactly they size on the skirt issue, if the piston sizes low on the skirt and that gets pulled out the bottom of the bore you'll have a terminal case of piston rock that will present itself as early onset scuffing
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