Holley Mid-Rise Intake w/Black Ceramic Coating for GM LS1/LS2/LS6 platform engines

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*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.

• Cast aluminum construction
• Unique modular design allows the combination of a traditional dual-plane layout with an EFI manifold plenum to produce great mid-range torque without compromising top end power
• Black Ceramic Coating provides an aggressive look for your engine compartment
• Provides great performance to 6500 rpm for street/strip performance applications while providing the look of a racing EFI intake manifold
• Intended for use on all GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads (recalibration of the ECU may be required when using this intake manifold design with OE ECU).
• Great for supercharged or turbocharged engines
• 92MM EFI plenum top which converts it into a Mid-Rise EFI intake manifold
• May require an aftermarket hood for some vehicle applications.
• Power band from 1500-6500 rpm

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Information:

Recalibration of the ECU may be required when using this intake manifold design with OE ECU. Holley EFI LS main harnesses have a map sensor connecter designed for use with an LS1/2 style map sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses a LS1/2 MAP sensor connection to a LS3 MAP, which is recommended for this manifold. NOTE: these manifolds & fuel rails are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors (OE LS fuel injectors may not fit properly in the intake manifold & fuel rail assembly). *** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.