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MSD 6632 6 HVC CDI Ignition Box with Soft Touch Rev Contol
MSD 6632 6 HVC CDI Ignition Box with Soft Touch Rev Contol

MSD 6632 6 HVC CDI Ignition Box with Soft Touch Rev Contol

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MSD 6632 6 HVC CDI Ignition Box with Soft Touch Rev Contol
MSD 6632 6 HVC CDI Ignition Box with Soft Touch Rev Contol
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Part # 5476632
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.


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HolleyDAYS are here again! SAVE up to 20% on this part and hundreds of other Holley brands during the 2018 HolleyDAYS sale 11/15/18-12/31/18.

The MSD 6 HVC CD Ignition Box is designed for professional racing applications that demand high rpm for long periods of time. The CDI box comes ready to race in NASCAR competition. We strongly recommend that you use the HVC coil (not included) that is matched to this box, to utilize all the power it provides.

  • Multiple spark, capacitive discharge ignition control
  • Clear epoxy potting compound for vibration protection
  • Clear base plate for easy tech inspection
  • 6-pin Weathertight connector, mandatory for NASCAR use
  • Special 4-pin connector to plug directly into the MSD Soft Touch Rev Control 8738 or Soft Touch Engine Control 8968
  • Multiple sparks for 20 degrees of crankshaft rotation
  • Accepts breaker points, amplifier and magnetic pickup trigger inputs
  • 550 primary voltage output to coil
  • 150 millijoules per spark up to 15,000 RPM
  • Works on 12 - 18 volt electrical system
  • Built-in reverse polarity protection circuit
  • Must be used with HVC Coil PN 8250
  • No programming loops
  • Supplied with rubber shock mounts 

547-6632 Instructions (PDF) 


  • Spark Energy:  150 mJ/spark
  • Primary Voltage:  550 Volts
  • Secondary Voltage:  40,000 Volts
  • Spark Series Duration:  20 degree Crankshaft Rotation
  • RPM Range:  15,000 RPM with 14.4 Volts
  • Voltage Required:  12-18 Volts, Negative Ground
  • Current Draw:  .7 Amp Per 1,000 RPM
  • Weight and Size:  5.1 lbs.,8"L x 4"W x 2.25"H
  • Turns ratio:  100:1
  • Primary resistance:  .07 OHMs
  • Secondary resistance:  360 OHMs
  • Inductance:  3mH
  • Maximum voltage:  34,000 Volts
  • Peak current:  600 mA
  • Spark duration:  200 uS


For warranty information, please visit
Some parts are not legal for use in California or other states with similar laws/regulations

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