This is the iron-block retrofit answer for 2007-2009 L76 applications that originally used the aluminum block. An iron block is the more durable choice for trucks that tow or see hard duty, and building it as a direct retrofit means the factory VVT hardware and calibration still apply. Covers Avalanche, Silverado, Suburban, Sierra and Yukon XL.

ATK Engines DCT12R Remanufactured Long Block Engine Features:

• Retrofit build using an iron block casting 12576181.
• Retains variable valve timing for the factory calibration.
• Head castings 12600823 and 12595364.
• Machined block, heads, crankshaft and camshaft with new wear parts.
• Finishing gasket set included.

Please CLICK HERE for ATK Warranty