• Cathedral Port Adapter Plates
  • Cathedral Port Adapter Plates (Corner View)
  • Cathedral Port Adapter Plates installed on engine with gaskets
  • Hellcat Supercharger on LS Engine Using Adapters (Front View)
  • Hellcat Supercharger on LS Engine Using Adapters (Corner View)
  • Hellcat on LT Engine Revving at LSFest
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Hellcat Supercharger to LS Cathedral Port Adapter (Gen III/IV)

Hellcat Supercharger to LS Cathedral Port Adapter (Gen III/IV)

$750.00 USD
$750.00 USD $750.00 USD
Sale Sold out

Overview

This adapter kit allows a Hellcat supercharger to be installed on Gen III and Gen IV LS cathedral-port cylinder heads. These adapter plates provide a sealed and properly aligned transition between the Hellcat supercharger and LS cathedral-port intake ports.

Fitment

  • Designed for Hellcat superchargers
  • Fits Gen III and Gen IV LS engines
  • Compatible with cathedral-port LS heads
  • Does NOT fit rectangle-port LS heads

What’s Included

  • Aluminum adapter plates
  • Mounting hardware (10x M6x90mm socket cap bolts)
  • Gaskets for cylinder heads and supercharger (8x GM 12626354 and 1x 92211)

Specifications

  • Material: A356-T6 Anodized Aluminum
  • Port style: Cathedral
  • Engine compatibility: Gen III / Gen IV LS with Cathedral Port Heads
  • Application: Hellcat supercharger conversion
  • Machined for proper port alignment and sealing

Additional Items Needed

  • DJTuning Griptec Pulley hub with LSA spacing.
  • Griptec Pulley
  • Optional: LSA serpentine system. See these instructions from Chevrolet for part numbers and installation LSA Drive
  • Electronics to control the supercharger BPV. Options below
  • Wiring to connect the TMAP sensor
    • Connector Housing: TE Connectivity 2050052-1
    • Connector Pins: 4x TE Connectivity 1-968849-1
    • Connector Wire Seal: 4x TE Connectivity 828904-1
  • Wiring to connect the throttlebody
    • Gen 3 metal backed TAC modules (02-07 Truck) with single 8 pin throttlebody connector require a different Throttle Position Sensor Signal. This can be accomplished by using our adapter harness.
    • Gen 3 Plastic TAC Modules or Gen 4 ECMs only require a different throttlebody connector
  • Intercooler pump, radiator, lines ,wiring, etc.
  • Gen IV engines can have clearance issues with the Oil Pressure Sender. This can be fixed with an M14x1.5 90 degree elbow fitting.

Tuning Information

  • Stock TMAP Temperature Sensor Calibration
    • Gen 3 PCMs (P01/P59) Units in Fahrenheit
    • Gen 4/5 ECMs or aftermarket Units in Fahrenheit

  • 2018+ 3 Bar TMAP Sensor Parameters
    • Linear: 309.25 kPa per 5 volts
    • Offset: 0.62 kPa at 0 volts
  • 2015-2017 2 Bar TMAP sensor parameters
    • Linear 227.1 kPa per 5 volts
    • Offset: 2.46 kPa at 0 volts
  • Stock Hellcat Injector Parameters
    • 57 lbs/hr at 4 bar (57 PSI)
    • Dead Time


In-Stock Ready to Ship

There is no guarantee that the supercharger will fit in your vehicle.

6.0L — LS2, LQ4, LQ9, LFA, LZ1
5.7L — LS1, LS6
5.3L — LS4, LM4, LM7, L59, L33, LY5, LMG, LMF, LH6, LC9, LH8, LH9
4.8L — LR4, LY2, L20
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