1972 350 Chevrolet Pickup Engine - Tech - Build Your First Engine
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With a coating of Torco assembly lube on the main bearings, the crank dropped in place. Note that the upper main bearing shells are grooved and are made with oil-feed holes to match those in the block's main bearing saddles. Don't make the mistake of installing the nongrooved and undrilled solid lower main bearing cap inserts in the block. It'll eliminate oil flow to the crank and wreck the engine within seconds. View Related Article
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