Each magnet is pressed and then riveted into the wheel to handle the fierce rpm and vibration that high horsepower engines put out. By installing the magnets in the trigger wheel, Speedmaster has done away with the chance of false triggering.
Speedmaster® Chevy BBC 454 502 Complete 6-71 Roots Supercharger Blower Kit
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Speedmaster® Chevy BBC 454 360cc 115cc Hydraulic Flat Assembled Cylinder Heads
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