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Holley EFI Crank Trigger Kit 556-116

SKU: 556-116

Availability: In stock

Handling Time: 30 Days


EFI Crank Trigger Kit

36-1 Tooth Crank Trigger System for Small Block Chevy

Holley's EFI Crank Trigger 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 trigger. It is designed for use on early model small block Chevy applications using a standard ATI or Fluidamper "style" balancer up to 7-1/4" in diameter.


  • 8" diameter, 1/4" thick, billet steel, 36-1 tooth, crank wheel with Black Zinc Oxide finish for superior corrosion resistance & striking good looks.
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  • Crank wheel centers off of the balancer's™ hub, eliminating the need for a centering ring
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  • All billet, 6061-T6 aluminum sensor mounting brackets with "œbright-dipped" black anodized finish & Laser etched Holley EFI logo
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  • Custom 3-wire, ferrous-target, Hall-effect sensor with M12X1mm threads for finer gap adjustment
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  • All Grade 8 & Mil. Spec mounting hardware

Installation Note:Will not work on balancers which do not have a center-hub extrusion (i.e.: Innovators West, etc.).
Not for use with Holley EFI with a 4x LSx or Chyrsler V8 NGC cam sensor


  • Brand: Holley EFI
  • Color: Black
  • Diameter: 8"
  • Emission Code: 4
  • Finish: Black Zinc Oxide
  • Make: Chevy
  • Product Type: Crank Trigger Kit
  • Sensor Dimensions: 12mm x 50mm
  • Sensor Type: Hall Effect
  • Trigger Type: 36-1
  • Warning: California Proposition 65
  • Wheel Width: 1/4"