Holley EFI

Holley EFI 556-120 Cam Sync Kit, +.400" Raised Cam

Big Block Chevy engines with a +.400 in. raised cam height & (Jesel or similar) external, dry timing-belt, cam drive system

Part # 556-120 Be the first to write a review
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4

Emissions

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

    See Emissions Details
A cam sync signal is required to run sequential fuel injection. This tells the ECU which cylinder is cylinder #1 (or the first cylinder in the firing order as entered in the software).
These kits were specifically designed to provide a plug-&-play cam position signal to Holley EFI systems, although they may be used with any EFI system which can read a digital, square-wave input cam signal. They are intended for use with Big Block Chevy engines with a +.400 in. raised cam height & (Jesel or similar) external, dry timing-belt, cam drive systems.

Features:

  • Fits Big Block Chevy Engines w/jesel and similar external, dry timing-belt, cam drive systems
  • Designed to provide a plug-&-play cam position signal to Holley EFI systems; Also compatible with any EFI system which can read a digital, square-wave cam input signal
  • Bracket assembly can be mounted in up to five locations to accommodate various cam-drive systems and front accessory drive configurations
Brand Holley EFI
Emission Code4
Product TypeCam Sync Kit w/ Bracket
UPC090127725047
Manufacturer Part Number556-120
Part Number556-120
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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