MSD's Flying Magnet Crank Trigger stabilizes ignition timing on Big Block Chevrolet engines by using four magnets embedded in a billet aluminum wheel that pass a stationary non-magnetic pickup, avoiding the false triggering that steel-stud designs can suffer from bolts, debris, or vibration.
Specifications:
- Fitment: Big Block Chevrolet
- Trigger Type: 4X, Magnetic sensor
- Wheel Diameter: 8 in.
- Wheel Width: 3/8 in.
- Sensor Dimensions: 3/4 x 2.25 in.
- Color: Red
- Includes: Two-piece mounting bracket, spacers for standard or .25 in. motor plate mounting
- Compatible With: MSD 6, 7, and 8-Series Ignitions and MSD Timing Accessories
- Warranty: Manufacturer's Limited 1-Year Warranty
- Part Number: 8620
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What ignitions is the MSD 8620 compatible with?
It triggers MSD 6, 7, and 8-Series Ignitions and all MSD Timing Accessories.
What is the wheel diameter on the MSD 8620?
The trigger wheel is 8 in. in diameter.
Is the MSD 8620 legal for street use?
No. It is legal for Racing Use Only vehicles and cannot be installed on emissions-controlled street vehicles.
What does the flying magnet design prevent?
The non-magnetic pickup cannot be falsely triggered by stray bolts, debris, or vibration, unlike traditional steel-stud crank triggers.
