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ATK High Performance GM 365 LQ4 550 HP Stage 1 Long Block Crate Engine LQ4-LB-1 with forged pistons and aluminum heads
  • ATK High Performance GM 365 LQ4 550 HP Stage 1 Long Block Crate Engine LQ4-LB-1 with forged pistons and aluminum heads
  • ATK High Performance GM 365 LQ4 550 HP Stage 1 Long Block Crate Engine LQ4-LB-1 with forged pistons and aluminum heads
ATK High Performance GM 365 LQ4 550 HP Stage 1 Long Block Crate Engines LQ4-LB-1

ATK High Performance GM 365 LQ4 550 HP Stage 1 Long Block Crate Engines LQ4-LB-1

$7,798.99 USD

ATK High Performance GM 365 LQ4 550 hp Stage 1 long block crate engines offer streetable horsepower producing big mid- to upper-end power with a noticeable idle. ATK Stage 1 or base engines are designed for those that may have their own component parts already, and who also are interested in completing out the build themselves.

Typically ATK GM 365 LQ4 550 hp Base Engines Consist of:

  • 6.0L iron LQ4 Gen III block
  • ATK reground crankshaft
  • Forged I-beam connecting rods
  • Forged pistons
  • Chromoly piston rings
  • Hydraulic roller camshaft
  • Performance aluminum cylinder heads
  • OE rocker arms with trunnion upgrade
  • Timing set