Pontiac Tri-Power 389 Engine Upgrade - 21st Century Tri-Power - Pontiac Tech
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The bottom end is nearly complete at this point. Installation of the Sealed Power high-volume oil pump, Milodon windage tray, and pan will follow. Why wasn't the bottom end converted to four-bolt main caps? The Webers felt it was unnecessary since it's primarily a street engine. View Related Article
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