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19436495 GM Gen V LT-Series 6.6L Cast Iron Bare Block [L8T Direct Replacement]
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CHEVROLET PERFORMANCEPART NUMBER: 809-19436495

19436495 GM Gen V LT-Series 6.6L Cast Iron Bare Block [L8T Direct Replacement]

$2,77109
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Iron Block
GM Gen V LT-Series 6.6L Cast Iron Bare Block
  • Direct Replacement L8T Engines
  • 4.065 in. Finished Bore (103.250 mm)
  • 6-Bolt Nodular Iron Main Bearing Caps
  • Cast Iron

    Chevrolet Performance 19436495 GM Gen V LT-Series 6.6L Cast Iron Bare Block

    • Direct replacement for L8T 6.6L engine that debuted in the 2020 Silverado and Sierra HD trucks
    • Designed for the stock 3.860 in. stroke for providing 6.6L, the largest displacement in the Gen V LT-Series
    • Drilled Inter-Bore cooling holes for excellent cooling between the cylinder heads and block
    • 9.240 in. Standard Deck Height
    • 1-Piece Rear Main Seal
    • Use only with LT1 - style cylinder heads
    • 4.065 in. finished bore (103.25mm)
    • Production Oiling System
    • Provision for Direct Fuel Injection

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    • These Chevrolet Performance Gen-V LT1/LT4 Series Engine Blocks are driving a new generation of street and racing enthusiasts by providing a foundation for serious performance achievements. Chevrolet took a chance with the new LT1 engine, staying true to the pushrod small block and continued to develop this technology to the point that building a daily-driven, 500-plus HP car is no big deal. These blocks are designed specifically to handle from 450-900 horsepower. If you are building a full out track only racing engine or a mild street cruiser there is a strong and durable LT1/LT4 cylinder block available to assure that you produce the power you require safely!

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    Features:

    • Deep-Skirt Casting (the block side extends below the crankshaft centerline)
    • 6-Bolt Cross-bolted Main Caps
    • Strong and Lightweight Aluminum Alloy Casting (most production blocks)
    • Provisions for the latest in Engine Control Management
    • 9.240" Standard Deck Height
    • 2.560" Standard LS Crankshaft Journal Diameter
    • 1-Piece Rear Main Seal
    • Optional Wet or Dry Sump Oiling
    Part TypeEngine Block
    Product LineChevrolet Performance Gen-V LT-Series Engine Blocks
    BrandCHEVROLET PERFORMANCE
    Package Height22.5
    Package Width23.5
    Package Length38.0
    Weight225.0 PG
    Main Cap MaterialNodular iron
    Engine Block MaterialCast iron
    Rear Main Seal Style1-piece
    Main Caps IncludedYes
    Finished Cylinder BoresYes
    QuantitySold individually
    Cylinder Bore Diameter4.065 in (103.251 mm)
    Main Bolt Style6-bolt
    Deck Height9.24 in (234.696 mm)
    Engine Make/SizeGM Gen V LT
    Vendor Part Number19436495
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning