Mopar 426 Supercharged Crate HEMI Instruction Manual
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Mopar 426 Supercharged Crate HEMI Instruction Manual

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426 Supercharged Crate HEMI® Engine Kit Instruction Sheet
www.mopar.com
TO PREVENT SERIOUS INJURY AND PROPERTY DAMAGE, YOU SHOULD READ, UNDERSTAND AND FOLLOW
THE WARNINGS AND INSTRUCTIONS IN THIS MANUAL PRIOR TO INSTALLATION.
CALL MOPAR FOR ASSISTANCE OR FOR FRENCH/SPANISH INSTRUCTIONS 1-888-528-HEMI (4364)
11/24/2020 – K6862992AC
1

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Tyler Miksa
July 9, 2025

Srt8 swap. Whet do start connectors go? Does 3rd connector only get hooked up when using odb2

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Summary of Contents for Mopar 426 Supercharged Crate HEMI

  • Page 1 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com TO PREVENT SERIOUS INJURY AND PROPERTY DAMAGE, YOU SHOULD READ, UNDERSTAND AND FOLLOW THE WARNINGS AND INSTRUCTIONS IN THIS MANUAL PRIOR TO INSTALLATION. CALL MOPAR FOR ASSISTANCE OR FOR FRENCH/SPANISH INSTRUCTIONS 1-888-528-HEMI (4364) 11/24/2020 – K6862992AC...

  • Page 2: Table Of Contents

    Intake Duct CAI Temperature Sensor 05149279AC 77072456AB CAN Bus Interface Device 68193711AC Fuel Pump Control Module H14765 Make-up Air Hose K6862992AC Instruction Sheet NOTE: Revision level (suffix) of part numbers are subject to change. Contact MOPAR for assistance. 11/24/2020 – K6862992AC...
  • Page 3 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Engine sold separately: 426 Supercharged Crate HEMI® engine part number: P5160194AB This kit and instruction sheet is designed for part number listed above only. MOPAR Service Parts Description Part Number Aluminum Engine Block...

  • Page 4: Important Safety & Emissions Information

    Make sure you or the installer has the appropriate skills and the tool required to safely install the engine.  If you do not understand the instructions, call MOPAR for assistance at 1-888-528-HEMI (4364).  NEVER modify wiring in the accelerator pedal system.

  • Page 5: Limited Warranty

    Installation of a Crate HEMI® engine in violation of these Instructions will void any applicable MOPAR warranty. Mopar Performance customers are responsible for complying with applicable federal state and local environmental laws and regulations. Many Mopar Performance parts and components are designed to be equipped in vehicles that are operated not on streets or highways (such as vehicles intended for competition or off-road use).

  • Page 6: Drivetrain Requirements

    426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Drivetrain Requirements Axle Drive Ratio The recommended axle drive ratio should be 2.61:1 to 3.70:1 to obtain optimal vehicle performance and fuel economy. A 230mm Limited Slip Differential (LSD) is recommended for best drivability.

  • Page 7: Additional Parts

    Some additional parts may be needed that are not supplied in this kit to complete the powertrain. Each application is unique and all possibilities and configurations may not be covered in this instruction sheet. These parts can to be ordered separately through your local MOPAR Dealer or an aftermarket supplier. Front End Accessory Drive (FEAD) Kit The 426 Supercharged crate engine will require a FEAD kit to operate the engine.

  • Page 8: Component Instructions & Guidelines

    426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Component Instructions & Guidelines Accelerator Pedal Follow accelerator pedal installation recommended guidelines below. Torque to 7 N∙m (5 ft. lbs.). Please refer to the Break-In/Maintenance section for the required pedal learn function.
  • Page 9 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Only use MOPAR Antifreeze/Engine Coolant (OAT coolant conforming to MS.90032) or equivalent in the engine’s cooling systems. Only use hoses that are compatible with OAT coolant in the engine’s cooling systems. More information can be found in the “Break-In / Maintenance” section.

  • Page 10: Charge Air Cooler System

    426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Charge Air Cooler (CAC) System Charge Air Cooler Inlet & Outlet The charge air cooler coolant inlet and outlet are located on the rear right of the supercharger assembly. The inlet is the lower fitting and the outlet is the upper fitting.
  • Page 11 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com The 2017 Dodge Challenger LTR system is recommended, however it may require modification to the vehicle to fit correctly. Part numbers for the production system are listed below: NOTE: Revision level (suffix) of part numbers are subject to change.
  • Page 12 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com The LTR of your choice should provide sufficient cooling performance for the engine. Insufficient cooling can result in power loss or engine damage. When Temperature & Manifold Absolute Pressure (TMAP) sensor temperature reaches calibrated values, the PCM will enter lower torque and power output modes to protect engine from damage.
  • Page 13 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Intake System Install the intake duct hose included ( 05038817AA) as pictured below. To install an intake filter, fabricate a mm (4.5 inch) intake to fit your vehicle’s space constraints. The intake filter must be within 600 mm tube (23.6 inch) of the throttle body.
  • Page 14 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Fuel Lines Fuel injectors and fuel rail will come pre-installed on crate engine. The fuel rail is a non-return style fuel rail. Use only fuel grade hoses and fittings when installing fuel system. Fuel rail inlet size is 1/2 inch SAE quick release.
  • Page 15 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Oil Filter Adapter & Cooler An oil cooler is required for this engine to maintain safe oil temperatures. An oil filter to oil cooler adapter is needed, the one shown, but not included, is a 2017 Dodge Challenger oil cooler adapter can be used;...

  • Page 16: Electrical Connections

    Make sure you or the installer has the appropriate skills and the tool required to safely install the engine.  If you do not understand the instructions, call MOPAR for assistance at 1-888-528-HEMI (4364). Engine Harness Ensure all connectors are connected in their appropriate location and are in the locked position. The pages below show all the engine and chassis connectors.
  • Page 17 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Ignition & Fuel There are 8 coil plug connectors and 8 fuel injector connectors, 4 on each side. Ensure that the correct plug is connected for each cylinder to avoid misfires. The engine’s firing order is 1-8-4-3-6-5-7-2.
  • Page 18 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Starter Motor There are 2 connections to be made for the starter, the starter battery connector and the starter solenoid connector. These wires will need to be extended if the starter will be placed on the driver side of the vehicle.
  • Page 19 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Charge air temperature sensor is to be plugged in at the air intake, ensure that there is little to no tension on this sensor pigtail as this may damage sensor and sensor plug. A hole may be drilled into the intake tube up to 152 mm (6 inches) away from the throttle body for installation.
  • Page 20 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Oil temperature and pressure sensor are connected near the oil filter location. The oil temperature sensor is facing the passenger side of the block and is directly above the filter location. The oil pressure sensor is located higher and to the right of the oil temperature sensor, it is plugged in facing the front of the engine.
  • Page 21 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Supercharger coolant temperature sensor has a 2 pin connector and is located on the back of the supercharger, across from the supercharger coolant inlet and outlet. Function Color CAC SIGNAL BR/GN...
  • Page 22 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Supercharger outlet TMAP (IMAT) is located on the top of the supercharger cover on the left side. Function Color SENSOR GROUND DB/DG SC OUTLET TEMP SIGNAL VT/BU 5 VOLT SUPPLY YL/PK...
  • Page 23 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Throttle Body Throttle position is a 6 pin connector that is on the throttle body assembly. Do not modify any wiring in this connector. Function Color ETC MOTOR (+) TN/YL ETC MOTOR (-)
  • Page 24 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com O2 Sensors The threads of the new oxygen sensors are factory coated with anti-seize compound to aid in removal. Do not add any additional anti-seize compound to threads of a new oxygen sensor.
  • Page 25 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Fuel Pump Harness & Fuel Pump Control Module (FPCM) The fuel pump harness is an additional harness to the body harness, needed only if a PWM controlled variable pressure fuel pump and fuel delivery is desired. A PWM controlled fuel pump with variable pressure is highly recommended.
  • Page 26 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com F & G - Fuel Pump Blunt Leads & Ground When installing the fuel pump harness, care and consideration should be taken as to location and routing of harness. The fuel pump blunt leads and ground should be kept as short as possible to avoid voltage drop.

  • Page 27: Body Harness

    426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Body Harness The body side harness consists of 2 sides, one side to route into the engine bay and mate with the PCM and PDC, and one side to the vehicle cabin for other connections. A grommet hole of 50 mm is needed in the bulkhead to route the harness.
  • Page 28 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com C – Color: BU/OG – Gauge: 16 – Fuel Pump Feed: Connect to fuel pump harness “Relay Control” blunt lead. If not using FPCM, this lead can be used as positive output for an electric fuel pump. (12V output, 20A fuse) C –...
  • Page 29 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Fuel Mod Control 2 pin connector located near the PCM connector, connects to the fuel pump harness’s fuel mod control connector. Function Color PWM CONTROL BU/LG PWM FEEDBACK BR/RD Inline Engine and Body Harness...
  • Page 30 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Power Distribution Center (PDC) There are 2 connectors that plug into the PDC and 2 battery post terminals. Torque for the PDC feet is a maximum of 2.7 N·m (24 in. lbs.).
  • Page 31 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com PDC Bus Bar & PDC Battery Connection The PDC bus bar will already be installed on the PDC. The bus bar connects both PDC power studs together to allow for only one power cable to be connected.
  • Page 32 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com STAR Connector and Connections The Star connector has multiple inputs; only 3 will be used in this application. Only two star connectors on the chassis harness will come installed to the star connector. Connect Star 3 when using the CAN Bus Interface Device.

  • Page 33: Final Connection

    426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Data Link Connector (DLC) This connector is an OBDII plug that should be mounted in the vehicle on the driver’s side to diagnose issues and codes the PCM may be outputting. When reading codes, a P1400 code may be present.
  • Page 34 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com All diagrams are wire insertion view 11/24/2020 – K6862992AC...
  • Page 35 1. Place the strands of the wires overlapping each other inside of the splice clip (1). 2. Using MOPAR crimping tool (1) or equivalent, crimp the splice clip and wires together. 3. Solder (3) the connection (2) together using rosin core solder (1).

  • Page 36: Break-In/Maintenance

     Do not use chemical flushes in your engine oil as the chemicals can damage your engine Coolant Use only MOPAR Antifreeze/Engine Coolant (OAT coolant conforming to MS.90032) 10 Year/150,000 Mile Formula or equivalent in the engine’s cooling systems. ...
  • Page 37 This engine has not been designed for use with propylene glycol-based engine coolant (antifreeze). Use of propylene glycol-based engine coolant (antifreeze) is not recommended. Pedal Learn Visit a MOPAR dealer to perform the learn functions below: 1. Connect a battery charger to the vehicle. 2. Cycle ignition to RUN.
  • Page 38 426 Supercharged Crate HEMI® Engine Kit Instruction Sheet www.mopar.com Start & Check Once all other procedures above are complete turn engine over using the ignition. Turn the ignition to “ON” position, listen for fuel pump priming, turn the ignition to “start” position and hold until the motor starts or for 5 seconds maximum.
  • Page 39 Use a filter of this type for replacement. The quality of replacement filters varies considerably. Only high quality filters should be used to assure most efficient service. MOPAR engine oil filters are a high quality oil filter and are recommended.

  • Page 40: Troubleshooting

    Call MOPAR for assistance if you have any questions regarding the instructions. 1-888-528-HEMI (4364) French and Spanish Instructions available, please call MOPAR. SHARE YOUR EXPERIENCE WITH MOPAR! MOPAR would love to hear your thoughts and experiences! Send us a message on our Facebook page or email us at FCAsocial@fcagroup.com with the subject “Crate Engine”.

This manual is also suitable for:

P5160194ab

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