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
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.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.