Another great project designed and made by Jack! The billet distributor clamp with timing degree marks allows you to dial in your timing without having to use a timing light. After initially setting your timing mark to 30 degree advance using a timing light, turn off the engine and mark your distributor to coordinate with the 30 degree mark on the clamp on lock down the distributor. You can now set your timing from 10 degree BTDC to 50 degree BTDC without the use of a timing light!