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lack or lubrication not enough oil, or too much internal sludge WHAT I HAVE ALWAYS SEEN WAS THE CAM BEARINGS TURN AND WELD THEMSELVES

TO THE CAM SHAFT AND SEIZ UP ( QUITS ROTATING ) BRAKES T-CHAIN

CAUSE-- NO LUBRICATION. YOU HAVE PROBLEMS TIME TO OVERHAUL

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Q: What causes a timing chain to snap on a 350 Chevrolet?
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