Holley EFI Crank Trigger Kit - BB Chevy Speedo 1-Piece Timing Cover

1-Piece Timing Cover

Bent tubes are angled forward to mount the front wing forward

500 in Diameter

1975-1986 Chevrolet K5 Blazer

Holley EFI Crank Trigger Kit - BB Chevy Speedo 1-Piece Timing CoverHolley'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"_x009d_ Crank trigger. It is designed for use on early model BBC Chevy applications using a standard ATI or Fluidamper "style"_x009d_ balancer up to 7 1 4"_x009d_