Boost Timing Master for use with MSD Ignition Control - 8762 bump-stops 5L V8 1975 - 1978

5L V8 1975 - 1978 Mercury Grand Marquis   460/7

Interior construction features high-temp interior sound absorption material delivering a deeper

6 V8 1970 - 1972 Ford Custom 351/5

4L V8 1964 - 1967 Ford Custom 427/7L V8 1960 - 1963 Ford F-100 332/5

Boost Timing Master for use with MSD Ignition Control - 8762 bump-stops 5L V8 1975 - 1978Overview: The 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