Product Summary

Universal Fit, Capacitive Discharge Ignition Box Output

  • It features a large, easy to read LED display
  • Includes a fully potted housing to stand up to demanding race conditions
  • Able to record the highest RPM the engine turned for last 20 minutes of run time
  • Has simple setup of features such as the rev limiter with three rotary dials on the face of the unit
  • The built-in start retard is adjustable in 0, 10 or 20 increments for quick, easy starts and extend starter life
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Key Specs

MFG. Part #6427
BrandMSD
Ignition Box OutputCapacitive Discharge
CircuitryDigital
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Need To Know

Quick and Easy Returns

Return Policy

MSD 6427 Details

Superior design makes it the most advanced ignition to ever hit a circle track. Packed with legendary MSD Ignition power, the 6CT offers a slew of features. A large digital LED display makes it easier than ever to see the rev limiter setting when dialing it in using the laser etched rotary dials on the face of the unit.

Rev limiting is controlled via microprocessor making it so smooth the chassis is virtually undisturbed when charging into turns. The rotary dials are also used to set cylinder select for 4, 6, and 8 cylinder engines, and to adjust the built-in start retard providing options of 0?, 10? or 20? of timing retard for quick starts. As an added bonus the LED display can be used as a live tach or will display your racecars battery voltage.

The unit records the highest RPM your engine turned during the race which can be easily recalled on the LED display as well. The 6CT offers all this and more in a fully potted, tamper proof housing that utilizes a single connector to keep wiring tidy.
Features:

  • Large, easy to read LED display
  • Simple setup of features such as the rev limiter with three rotary dials on the face of the unit
  • Built-in Start Retard adjustable in 0?, 10? or 20? increments for quick, easy starts and extend starter life
  • LED displays rev limit, highest RMP turned, cylinder select, start retard, battery voltage and can be set to tach mode
  • Full delivery of spark energy down to 6 volts battery supply
  • Highly efficient, low current draw for extended battery life
  • Fully potted housing to stand up to demanding race conditions
  • Single plug-in connector for clean wiring
  • Tamper proof screws to prevent modification of unit
  • Records highest RPM the engine turned for last 20 minutes of run time
  • Works on 4, 6 and 8 cylinder engines
  • Reverse polarity and overheat protection provide ultimate reliability

Charts

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

MSD 6427 Specifications

KEY SPECS
MFG. Part #6427
BrandMSD
Ignition Box OutputCapacitive Discharge
CircuitryDigital
GENERAL
Rev Limiter IncludedYes
Data AcquisitionYes
Timing RetardThree-stage
Coil IncludedNo
Primary Voltage535-550 Volts output to coil
Spark Output135-150 MJ
Voltage Required6-18 Volts
Current Draw0.8 Amp per 1000 RPM
GTIN Code085132064274
Overall Length7.89"
Overall Width4.00"
Overall Height1.87"
ColorRed
Sold in QuantityEach
Emission Code3

Ratings & Reviews

5

2 Reviews

Overall Assessment

The Msd spark box is highly regarded for its versatility and quality. Users are impressed with its wide-ranging capabilities, including working down to 6 volts and a built-in volt meter, tachometer, and rev limiter. Also praised for its ability to function on 4, 6, or 8 cylinder engines and adjustable timing feature, its ease of use and excellent wiring quality are considered as remarkable, with a convenient weather-tight connection for easy removal if necessary. Customers emphasized its distinction in performance, earmarking it as the preferred choice especially for dirt track races and establishing its IMCA legality.

5

2 reviews

5

2

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Msd spark box

5.0

4 months ago

Jay steffens

Nebrask

Verified

This is a great spark box. Sealed. Does everything. Still works down to 6 volts. Reduces timing when you start engine. Has a volt meter. Tach. Rev limiter. Works on 4,6,8 cylinder engines. The wiring is great. If for some reason you need to take it out it just unplugs from the weather tight connection. Definitely the box to run. Imca legal.

Would Recommend

Yes

5.0

3 years ago

Dan

Lockbourne ohio

Verified

Dirt track race

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

1 Question • 3 Answers

Hi, a question from the UK. Does this unit come with a preset Rev limit of 7500 RPM? Thanks Jim

by Jim

• 8 years ago

3 answers

1 of 1 questions shown

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