Holley EFI 556-115 Ignition Crank Trigger Kit

36-1 Tooth Crank Trigger System for Small Block Ford;

Holley's EFI Crank Reluctor Kit is engineered to provide an accurate crank speed & position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is measured every 10 degrees as opposed to every 45 degrees for a standard 4-Magnet, MSD style Crank reluctor. It is designed for use on SBF applications using a standard ATI or Fluidamper style balancer up to 7-1/4 in. in diameter.;