Description
Fits w/Big Block Chevy +600/1.0 in. Raised Cam Height w/Holley EFI System – Dry Timing-Belt – Cam Drive
Holley EFI – Cam Sync Kit P/N 556-121 Features:
- Unique Design For Adjustment From Outside The Bracket w/A Jam Nut
- Plug/Play Cam Position Signal To EFIs w/Digital Square Signals
- 5 Different Mounting Configurations
