Big Block Chevy w/ +600/1.0 Inch Raised Cam Height, For external, dry timing-belt, cam drive systems Fits Big Block Chevy engines w/ JESEL and similar external, dry timing-belt, cam drive systems Includes 3 wire hall-effect sensor (8-20 volts), anodized billet aluminum bracket, mounting hardware, mating connector, and stainless steel ¼�-20 œflying magnet� screw w/ high-temp, rare-earth magnet Unique t-nut and bracket design allows for complete sensor adjustment from the outside of the bracket with a single jam nut Designed to provide a plug-&-play cam position signal to Holley EFI systems, Also compatible with any EFI system which can read a...