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Main Bearings

  1. Main bearing caps are numbered one through 6 (front to rear). Never interchange bearing caps. Use Plastigage method for measuring bearing clearances. See CRANKSHAFT MAIN & CONNECTING ROD BEARINGS specifications at end of article.
  2. When replacing bearings, install grooved bearing halves into cylinder block. Plain bearing halves are installed in main caps. Lubricate crankshaft journals and bearings prior to installation.
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