Holley Mid-Rise Intake – GM LS1/LS2/LS6


Single Plane Mid–Rise EFI LS Intake Manifold

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Single Plane Mid–Rise EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.


  • 4150 Square bore flange
  • 2500-7000 RPM power band
  • Minimum carb flange height – fit in vehicles with minimum hood modifications
  • Optimized runner layout and constant cross sectional area – broad torque curve, best vehicle performance from 2500-7000 RPM
  • Efficient casting design – lightweight, consistent wall thicknesses, improved casting quality
  • Cast aluminum construction – great manifold for centrifugal blower, turbocharged or NOS power adder applications
  • Includes Viton® O-ring intake to cylinder head gaskets – Viton® is a registered trademark of DuPont Performance Elastomers
  • Port size – 2.50″ height x 1.15″ wide
  • Weight – 11.5 lbs.
  • Height (front) – 5.417″ to the lifter valley cover flange at the engine block front flange
  • Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219