
Flying Magnet Crank Trigger Kit GM LS Gen-III/IV, 8 in. Diameter Trigger Wheel
Breakdown of Included Items for MSD 8623-MSD
Features:
- Provides electronic timing control through a Holley EFI ECU or similar standalone engine management system
- The trigger wheel is made from 3/8 in. thick 6061-T6 billet aluminum and incorporates embedded magnets to send clean and accurate signals during every firing
- The 3-wire hall-effect sensor is less susceptible to noise interference and provides the most accurate way to trigger Electronic Fuel Injection (EFI)
- 10-degree timing pointer indexing range
- Aluminum mounting brackets and hardware offer rigidity to eliminate flex and engine timing malfunctions
- 5-20 operating voltage
Notes:
- On some vehicles, this MSD Crank Trigger Kit may require slight modifications to accommodate special engine plates, pulley systems, and other variables
- Designed to be used with ATI Harmonic Balancers 085-917777 or 085-917211, and also compatible with ATI Harmonic Balancers 085-917264 and 085-917242
- Compatible with Meziere water pump # WP333
- Compatible with GM LSX blocks
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
The Best Way to Trigger Your Ignition
Stable ignition timing is necessary for high-horsepower engines with extreme cylinder pressures. MSD uses a non-magnetic pickup triggered by powerful magnets embedded in the trigger wheel. The sensor brackets feature a long adjustment slot providing a range of accurate timing adjustments.
![Self-Powered Timing Light [Powered by (2) D-Cell Batteries]](https://www.jegs.com/images/mini_200/500/555/555-w80578.jpg)



![Fender Cover with Pocket [23 in. W x 31 1/2 in. L]](https://www.jegs.com/images/mini_200/500/555/555-65010.jpg)
![Round Magnetic Parts Tray [5 1/2 in. Round]](https://www.jegs.com/images/mini_200/500/555/555-80080.jpg)
![Microfiber Towels, Oversized [16 in. x 16 in.]](https://www.jegs.com/images/mini_200/500/555/555-80190.jpg)



![Heavy-Duty Nitrile Gloves [7 mils Thick, Large]](https://www.jegs.com/images/mini_200/500/555/555-1124.jpg)

![2-Ton Low-Profile Aluminum Floor Jack [4,000 lbs. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80006.jpg)

![Wheel Chock [Solid Rubber]](https://www.jegs.com/images/mini_200/500/555/555-w41001.jpg)

![Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-81156.jpg)
![1/2 in. Drive Torque Wrench [10 to 150 ft. lbs.]](https://www.jegs.com/images/mini_200/500/555/555-m200db.jpg)


