The MSD 6520 is a high-performance digital ignition control module from the legendary 6AL series, designed to deliver maximum spark energy and precise timing control. This advanced ignition system incorporates capacitive discharge technology with built-in rev limiting capabilities for comprehensive engine protection and performance enhancement.

Technical Specifications:

• Primary Voltage: 12-18V DC
• Output Voltage: Up to 460+ volts
• Spark Energy: 135-150 mJ per spark
• Multiple Sparks: Up to 3,000 RPM
• RPM Capability: 12,500 RPM
• Primary Resistance: 0.6 ohms
• Input Current Draw: 5-7A per 1,000 RPM
• Operating Temperature: -50° to +185°F
• Dimensions: 8.25" x 4.25" x 2.25"
• Weight: 2.5 lbs

Electronic Features:

• Digital Rev Limiter
• Built-in LED diagnostics
• Capacitive Discharge System
• Automatic coil charging
• EMI/RFI suppression
• Reverse polarity protection
• Built-in tach driver
• Thermal overload protection

Construction Features:

• Cast aluminum housing
• Fully potted electronics
• Weatherproof connections
• Vibration-resistant mounting
• Gold-plated terminals
• Heavy-duty internal components
• Heat sink design
• Sealed construction

Performance Benefits:

• Increased spark energy
• Multiple spark discharge
• Enhanced throttle response
• Improved starting
• Better fuel efficiency
• Reliable high-RPM operation
• Precise rev limiting
• Consistent timing control

Installation Components:

• Ignition control module
• Mounting hardware
• Wiring harness
• Rev limiter chips
• Installation instructions
• Wire terminals
• Zip ties
• Technical manual

Compatibility:

• Points distributors
• Magnetic pickup distributors
• Electronic amplifier triggers
• Most OEM distributors
• 4, 6, and 8-cylinder engines
• Racing applications
• Performance street use
• Marine applications