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Weiand 6-71 Supercharger Kit Chrysler Early HEMI (331, 354 or 392) Drive Pitch: 1/2"

Weiand 7581P
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Product images may differ from actual product appearance.

925-7581P

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Weiand 6-71 Supercharger Kit Chrysler Early HEMI (331, 354 or 392) Drive Pitch: 1/2" $3,999.95
6-71 Supercharger Kit
  • Chrysler Early HEMI (331, 354 or 392)
  • Drive Pitch: 1/2''
  • Drive Ratio W/ Included Pulley Set: 10.5% Underdriven
  • Polished Finish

  • Weiand 7581P Details

    6-71 Superchargers - Chrysler HEMI

  • CNC machined case and rotors
  • Matched gear sets for precise rotor alignment
  • 100% tested
  • 34 Tooth Lower Pulley
  • 38 Tooth Upper Pulley

  • Specifications:

    Finish
    Polished
    Blower Size
    6-71
    Manufacturer's Part Number:
    7581P

    More than 40 Years in the Supercharger Business

    Weiand superchargers can be found in all aspects of racing, from tractor pulls to the quarter mile. When you pull into your local cruise-in or dragstrip with one of these 6-71 superchargers sticking through the hood you are sure to be noticed. Producing 50%+ more horsepower and torque, the 6-71 supercharger is not just your average supercharger!

    All 6-71 kits are available with either the traditional 1/2" pitch (one piece snout) or the extra tough 8mm belt configurations to suit your needs.

    Got a HEMI? Weiand has nostalgic supercharger kits for early Chrysler Hemi's (331, 354 or 392). Hemi kits have the traditional 1/2" pitch drive and early one piece snout.

    Supercharger Features:
  • Roots-type two-lobe helical rotor eliminates flex
  • Rotor setup closes tolerances for maximum boost efficiency
  • Equal distribution of fuel/air mixture optimizes HP gains
  • Mounts with standard distributor setup
  • Heavy-duty bearing plates eliminate cracking
  • Rear plates use premium sealed ball bearings
  • Front bearings lubricated by oil bath
  • Front rotor shaft seals are double-lipped with PTFE
  • Kits are designed to produce 10-12 lbs of boost on small blocks and 5-7 lbs of boost on big blocks but are a simple pulley change away from pump gas or hard core racing.

    6-71 Street Supercharger Kits Include:
  • Polished or Satin 6-71 Supercharger with gears and bearing plates
  • Supercharger Intake Manifold
  • 2-4V Carburetor Adapter
  • Supercharger to Manifold Gasket
  • Carburetor Adapter to Supercharger Gasket
  • 3" Gilmer Belt, pulleys, brackets, idler, and necessary fasteners

    Note: Kits do not allow enough clearance to fit a GM HEI distributor. Fuel lines not included.

  • Does Weiand 7581P fit your vehicle?

    Narrow Results

    2014-2015 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LONE STAR
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2015 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: POWER WAGON
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    1957-1958 CHRYSLER NEWPORT

    • CC: 6425
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: TRADESMAN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2016-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LIMITED
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: SRT8

    2014-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LARAMIE LONGHORN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    1958 FACEL VEGA EXCELLENCE

    • CC: 6425
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2015 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LONE STAR
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: BIG HORN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2013 DODGE CHALLENGER

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SRT8
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    1957-1958 CHRYSLER TOWN & COUNTRY

    • CC: 6425
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2016 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: 392 HEMI SCAT PACK SHAKER

    2015-2017 DODGE CHARGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: SRT 392

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: ST
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SLT
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2016 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: R/T SCAT PACK

    2016-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LARAMIE LIMITED
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: ST
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LARAMIE LONGHORN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2017 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: T/A 392

    1959 FACEL VEGA EXCELLENCE

    • CC: 6425
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2016-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LIMITED
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    1957-1958 CHRYSLER 300

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: ALL

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: TRADESMAN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2011-2012 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: SRT8

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: OUTDOORSMAN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2015-2017 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: SRT 392

    1957-1958 CHRYSLER NEW YORKER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: ALL

    2016-2017 RAM 2500

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: POWER WAGON

    2015-2016 DODGE CHARGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: R/T SCAT PACK

    2012-2013 JEEP GRAND CHEROKEE (WK2)

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SRT8
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LARAMIE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LARAMIE LIMITED
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LONE STAR
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2017 DODGE CHALLENGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: R/T 392

    2015 DODGE CHALLENGER

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SCAT PACK
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2013-2017 JEEP GRAND CHEROKEE (WK2)

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: SRT

    2013 CHRYSLER 300

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: SRT8 CORE

    2017 DODGE CHARGER

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: R/T 392

    2012-2014 DODGE CHARGER

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SRT8
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SLT
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 3500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: BIG HORN
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    1957-1958 CHRYSLER IMPERIAL

    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • EngineType: ALL
    • SubModel: ALL

    2012-2014 CHRYSLER 300

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: SRT8
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )

    2014-2017 RAM 2500

    • CC: 6424
    • Fitment_Note: Requires Stock Replacement Harmonic Damper For Pulley Alignment
    • Liter: 6.4
    • SubModel: LARAMIE
    • CUI: 392
    • EngineType: V8 ( 6.4 L / 392 )
    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations