MSD - Boost Timing Master for use with MSD Ignition Control With an easy fit in

With an easy fit in mind

5 in ID - 12 in Length - 650 lb/in Spring Rate - Steel - Blue Powder Coat - Each

5 in ID - 12 in Length - 325 lb/in Spring Rate - Steel - Red Powder Coat - Each

Valve Cover - Tall - Billet Rail - Fabricated Aluminum - Natural - Big Block Chevy - Pair

Unit features warning and check engine light outputs

MSD - Boost Timing Master for use with MSD Ignition Control With an easy fit inThe Boost Timing Masters allow you to adjust the amount of ignition retard from 1 per pound of boost to 3 per pound via a control knob that you mount on the dashboard. This way you can make adjustments on the fly to prevent detonation as fuel quality or altitude and air quality changes up to a maximum of 15 retard. You can also set a boost pressure point to start the retard. There is a boost pressure port to connect to your manifold and the BTM wires