Distributor Vacuum Advance

Description

Each vacuum advance unit is specifically calibrated to provide correct amount of ignition advance at appropriate vacuum levels. Fits Oldsmobile:
1967 400 2BBL
1968 350 2BBL
1968 400 2BBL
1968 400 4BBL MT excluding UHV ignition
1969 350 4BBL
1970 350 4BBL including W31