PPE Upgraded Cast Iron Ported Cylinder Head For 01-04 GMC Chevrolet 6.6L Duramax 1989-1993 5.9l 12v cummins Level 3: 65 Horsepower -

Level 3: 65 Horsepower - 150 Foot Pounds of Torque

Combining GTR’s top-tier 9005/HB3 Ultra 3

or the original equipment tail pipes

5" bolt pattern is common on many vehicles such as the 6 lug Toyota 4-Runner

PPE Upgraded Cast Iron Ported Cylinder Head For 01-04 GMC Chevrolet 6.6L Duramax 1989-1993 5.9l 12v cummins Level 3: 65 Horsepower -The OEM Duramax cast aluminum cylinder heads fall short over time the differing heat expansion rates between the cast iron engine block and cast aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and or cracking in high performance applications where excessive heat is introduced. PPEs new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for