The MSD 8984 Small Block Chevy Flying Magnet Crank Trigger Kit represents precision ignition timing control technology. This system eliminates timing inconsistencies associated with chain-driven distributors by providing accurate trigger signals directly from the crankshaft. Engineered for high-RPM applications, it delivers extremely accurate timing signals for maximum engine performance and reliability.

Technical Specifications:

• Part Number: 8984
• Series: Flying Magnet
• Application: Small Block Chevy
• Material: Billet Aluminum/Steel
• Trigger Wheel Diameter: 7.25"
• Trigger Wheel Material: Heat-Treated Steel
• Magnet Type: Rare Earth
• Number of Magnets: 4
• Sensor Type: Hall Effect
• Maximum RPM Rating: 15,000
• Timing Accuracy: +/- 0.1 degrees
• Sensor Air Gap: 0.050" - 0.100"
• Weight: 4.2 lbs
• Trigger Points: Every 90 degrees
• Operating Voltage: 8-18V DC
• Operating Temperature: -40°F to +300°F

Kit Contents:

• Billet Aluminum Mounting Bracket
• 7.25" Trigger Wheel
• Hall Effect Pickup Sensor
• 4 Flying Magnets
• Sensor Holder
• All Mounting Hardware
• Detailed Instructions
• Timing Tape
• Balancer Adapter

Construction Features:

• CNC-Machined Components
• Heat-Treated Trigger Wheel
• Aircraft-Grade Fasteners
• Precision-Ground Mounting Surfaces
• Shielded Sensor Wiring
• Anti-Vibration Mounts
• Balanced Wheel Design

Installation Specifications:

• Required Tools:
• 3/8" Drive Socket Set
• Allen Wrench Set
• Dial Indicator
• Timing Light
• Thread Locker
• Mounting Requirements:
• Damper Bolt Pattern: 3-bolt
• Bracket Clearance: 1" minimum
• Sensor Wire Length: 36"
• Timing Pointer Required

Compatibility:

• Engine Types:
• Small Block Chevy 262-400
• Aftermarket Blocks
• Stroker Combinations
• Balancer Requirements:
• Standard SBC 6.75" - 7.25"
• Steel or Aluminum Construction
• 3-Bolt Pattern

Performance Benefits:

• Eliminates Timing Chain Variables
• Superior High-RPM Stability
• Precise Timing Control
• Reduced Timing Scatter
• Enhanced Ignition Accuracy
• Improved Engine Response
• Better Power Production
• Consistent Performance

Technical Features:

• Signal Output:
• Clean Square Wave
• 5V DC Signal
• 90-Degree Duration
• Positive/Negative Switching
• Sensor Specifications:
• Hall Effect Technology
• Sealed Construction
• Shielded Lead Wire
• LED Indicator
• Over-Voltage Protection

Installation Notes:

• Requires Initial Timing Setup
• Balancer Must Be True
• Regular Inspection Required
• Sensor Gap Critical
• Shield From Heat Sources
• Use Thread Locker
• Check All Clearances