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MSD Digital-7 & 7AL Series Ignition Boxes
Product Discontinued
MSD IGNITIONPART NUMBER: 121-7230

MSD Digital-7 & 7AL Series Ignition Boxes

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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

    7AL-3 Ignition Control Box
  • 8-Cylinder Applications Only
    **This Item has been Replaced by the New 7AL-3 Ignition Control Box 121-7330
    Pro Drag Race Igniton!

    Within its bright red anodized aluminum case, you'll find tons of race-type features like a built-in Three Step Module Selector (with Soft Touch Rev Control to keep the rpm limiting action smooth and accurate). Four built-in timing retard modules that can be activated at different times to help enhance engine longevity under heavy nitrous usage or high rpm top end charges. An automatic 25A?A?A?A?A?A?A?A° start timing retard helps your engine fire-up quicker, especially if you're running a crank trigger or locked out distributor. And a 10 amp, rpm activated switch allows you to activate a solenoid, shift light, or other component at adjustable rpm. A thick layer of Humi-Seal blankets the MSD Ignition 7AL-3's internals and sturdy rubber vibration-proof mounts help combat vibration.

    The MSD 7AL-3TM is based off the well proven MSD 7AL-2 Plus. It features a host of the most popular drag racing accessories. A built-in Three Step Rev Control provides three different rpm limits that can be used for the burnout, holeshot and top end overrev protection. There is also a Multi-Step Retard with four different modules that can be activated at different times. Four 0A?A?A?A?A?A?A?A° modules and a 2A?A?A?A?A?A?A?A°, 3A?A?A?A?A?A?A?A° and 4A?A?A?A?A?A?A?A° module are supplied. Many race engines with crank trigger systems or locked-out distributors will benefit from the 7AL-3's built-in Start Retard option. During cranking the Start Retard will retard the timing 25A?A?A?A?A?A?A?A° allowing the engine to turn over easier. When the engine starts, the timing will automatically go back to its mechanical setting. One last option is an RPM Activated Switch that allows you to activate a solenoid or shift light at an adjustable rpm. When the engine hits the desired rpm the RAS circuit provides a ground to the component to activate it. Vibration mounts, wires and detailed instructions are supplied.

    Operating Specifications

  • Spark Energy: 160 mJ per spark
  • Primary Voltage: 570 volts
  • Secondary Voltage: 50,000 volts (tested with Pro Power Coil)
  • Spark Series Duration: 20A?A?A?A?A?A?A?A° crankshaft rotation
  • RPM Range: 14,000 RPM with 14.4 volts
  • Voltage Required: 12 or 18 VDC Negative Ground
  • Current Draw: 6 amps per 6,000 RPM / 12 amps per 12,000 RPM
  • Size: 8" L x 3.75" W x 5.75" H
  • Weight: 4.75 lbs

    Parts Included:

  • (1) Ignition Control 7AL-3
  • (1) Parts Bag (wires and connectors)
  • (4) RPM Modules 3000, 7000, 8000, 9000
  • (4) Retard Modules 2A?A?A?A?A?A?A?A°, 3A?A?A?A?A?A?A?A°, 4A?A?A?A?A?A?A?A°, 4A?A?A?A?A?A?A?A°
  • (4) Zero Degree Modules
  • (4) Vibration Mounts

    No Timing Compromises

    Ignition timing is always a compromise between cylinders. The dynamics of air and fuel flow into each cylinder is never exactly the same no matter how much machining magic has been done. This has always caused top engine builders to compromise their ignition timing. With the Programmable 7-Series Race Ignition Boxes advanced Individual Cylinder Management system and other exact timing programs, you will never need to compromise again.

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    When you need race-proven ignition performance that won’t let you down, the MSD 7-Series Race Ignition Boxes are built to deliver. Engineered for serious competitors, these ignition systems offer unmatched spark energy, advanced features, and rugged construction to handle the harshest racing conditions.

    The MSD Digital 7 ignition box delivers ultra-fast processing power and precision timing control, making it the ideal choice for high-horsepower drag, circle track, and off-road applications. With programmable RPM limits, timing curves, and data acquisition capabilities, this unit gives racers the ultimate edge in tuning and customization.

    For those looking for legendary performance in a straightforward design, the MSD 7AL-2 remains a favorite in the racing community. It’s known for delivering a powerful capacitive discharge spark throughout the RPM range while providing built-in rev control and compatibility with MSD’s RPM modules for quick adjustments at the track.

    The MSD 7-Series line stands apart with its durability, consistent output, and seamless integration with other MSD components. Whether you're pushing big boost, nitrous, or high compression, these ignition boxes provide the spark intensity and reliability needed to keep your engine firing strong—pass after pass.

    Built for racers who demand precision and power, the MSD 7-Series Race Ignition Boxes are the backbone of countless winning setups. Trust MSD to ignite your competitive edge and help you dominate the race day.

Product LineMSD 7-Series Race Ignition Boxes
BrandMSD IGNITION
Package Height4.9
Package Width6.6
Package Length12.9
Weight6.89 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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