GM Race Heads For 2004.5-2005 LLY 6.6L Duramax Industrial Injection Idle Kits and Parts " Factory Replacement System

GM Race Heads For 2004.5-2005 LLY 6.6L Duramax Industrial Injection Idle Kits and Parts " Factory Replacement SystemThe Industrial Injection LLY Duramax Race Heads are designed for the racer sled puller in mind. Fully CNC ported heads complete ready to bolt on. Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable. Valve guides and seats are removed as

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