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
  
  

  Features:

  • 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.

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