Texas Speed LS1 Cylinder Head Upgrade - Big Power, Small Change - Part 1
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Before installing the new heads, the coolant passage plug is transferred from the factory passenger-side head to the PRC head destined for the same side. Since the heads are interchangeable from side to side, it doesn't matter which head is chosen. The coolant temperature sensor was attached to the driver-side head once it was installed to prevent damage to the sensor. View Related Article
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