MSD 6425 6AL Digital Ignition Control Box & Blaster SS Coil Kit

Control Box

The MSD Digital 6AL features a higher output with 530 primary volts and 135mJ of spark energy. Efficient components use less current to produce more power. Set an rpm limit on the MSD 6AL rev limiter with two rotary dials. Has the same bolt pattern as the original 6AL, but with a lower profile housing. Built-in LED for system checks. All wires exit the same side through a locked, sealed connector. Compatible with 4, 6 and 8-cylinder engines.

MSD Tech Bulletin

Learn more about the benefits and features of the MSD 6AL Digital Ignition Control Box by reading StangTVs tech article.  MSDs Newest 6AL Takes Conventional Ignitions into the Digital Age.

Learn more about determining the proper MSD ignition control box for your application by reading our tech article. The Differences Between 6 Series MSD Ignition Control Units.

Ignition Coil

Don’t let the compact size of the Blaster SS Coil fool you, because it is packed with performance! The efficient E-core windings are designed to produce high amounts of current without sacrificing the voltage output. In fact, when used with an MSD 6 Series Ignition, the Blaster SS produces 300 milliamps with a maximum voltage output of 40,000 volts! The secondary windings are wound on a segmented bobbin which reduces the chance of voltage breakdown between the primary and secondary windings. For more protection, these windings are encased in a polyurethane compound for complete protection against vibration. The Blaster SS features brass terminals and a sturdy Rynite housing. It is supplied with a 90° boot, terminal and vibration mounts. A great addition to CD Ignitions and some stock applications.

• Improved output coil for electronic ignitions, and MSD Ignitions
• Efficient winding design and assembly creates a compact housing
• Primary and secondary windings are encased in Ciba polyurethane
• 70:1 turns ratio and lower primary resistance produce high voltage output
• Dupont Rynite housing with a tall tower and brass primary terminals

547-6425 Instructions (PDF) 

547-8207 Instructions (PDF)

• Spark Energy:  135-145 mJ per spark 
• Primary Voltage:  520-540 Volts 
• Secondary Voltage:  45,000 Volts 
• Spark Series Duration:  20 degree Crankshaft Rotation 
• RPM Range:  15,000 RPM with 14.4 Volts 
• Voltage Required:  12-15 Volts, 7 Volt Start 
• Current Draw:  .7 Amp per 1,000 RPM 
• Weight and Size:  1.7 lbs., 8"L x 4"W x 1.825"H