Specifically designed for JESEL and similar external, dry timing-belt cam drive systems on Big Block Chevy engines with a +.600"/1.0" raised cam height, this kit delivers a plug-and-play cam position signal to Holley EFI systems.
Specifications:
- Application: Big Block Chevy, +.600"/1.0" raised cam height
- Sensor: 3-wire Hall Effect, operates 8-20V
- Bracket: Anodized billet aluminum
- Hardware: Mounting hardware and mating connector included
- Trigger: Stainless 1/4"-20 "flying magnet" screw with high-temp rare-earth magnet
- Bracket mounts in up to five locations for various cam-drive and accessory-drive configurations
- Part Number: 556-121
The t-nut and bracket design allows complete sensor adjustment from outside the bracket with a single jam nut. Also compatible with any EFI system that reads a digital square-wave cam input signal.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What cam height is this kit designed for?
It's built for Big Block Chevy engines with a +.600"/1.0" raised cam height running JESEL or similar external, dry timing-belt cam drive systems.
How many mounting positions does the bracket allow?
The bracket assembly can be mounted in up to five locations to accommodate various cam-drive systems and front accessory drive configurations.
Is this compatible with non-Holley EFI systems?
Yes, it's compatible with any EFI system that can read a digital, square-wave cam input signal.
Is this legal for street-driven vehicles?
No, it's legal for sale and use only on Racing Use Only vehicles that are never registered or operated on the street.
