Also, I forgot to mention - I wouldn't put many miles on the engine before checking the end play again. Check it often and at the first sign of it getting worse I'd definately park it. If it were me I would just pull it anyway and see what is going on. No sense in messing up the crank too.
What all is done to the engine as far as mods go? How many miles on the rebuild? Have you pulled the oil filter and checked for particles? Just curious.
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Gunning for 12's!
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