Ignitions and Electrical› Distributors, Magnetos and Crank Triggers
MSD
MSD Crank Trigger Wheel Kit Flying Magnet Bbf 7.25 In. Big Block Ford 429-460Ci Use With MSD 6/7/8 Series Ignition Red MSD Ignition
SKU: M00T 8644
Moderate — 2–4 hours
Description
Part #: 8644
Most crank triggers have a wheel, with steel studs sticking out, bolted to the harmonic balancer. As the crankshaft turns, the studs pass by a stationary magnetic pick-up, triggering the ignition. This pick-up can be triggered by other bolts, debris, or even vibrations which will cause a loss of power or engine damage. The MSD Flying Magnet Crank Trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This flying magnet design produces accurate trigger signals and the non-magnetic pick-up cannot be falsely triggered.Powerful magnets are embedded in a billet aluminum trigger wheel.Fits 429/460 Big Block Ford.The non-magnetic pickup cannot be false triggered.Does not fit Cleveland blocks.Absolutely the most accurate way to trigger the ignition.Kits feature special brackets and mounting hardware for a variety of engines.Details:Diameter: 7.25Emission Code: 4Warranty: Manufacturer's Limited 1 Year Warranty
Features:
- Absolutely the most accurate way to trigger the ignition.
- The non-magnetic pickup cannot be false triggered.
- Powerful magnets are embedded in a billet aluminum trigger wheel.
- Kits feature special brackets and mounting hardware for a variety of engines.
- Fits 429/460 Big Block Ford.
- Does not fit Cleveland blocks.
Big Block Ford - 429-460ci - Use with MSD 6/7/8 Series Ignition - Red
MIA's Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | MSD |
| Part Number | M00T 8644 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy