Wild Willie
Active member
need advise here.... My 68 GT/CS 289, 2V motor had a dual Vacuum advance when I pulled apart the engine for rebuild. The unit is old, rusty and looks bad. Now I want to replace the Vacuum advance. The question is should I replace it with a single Vacuum advance or do I need the Dual vacuum advance? Can you also remind me where the Vacuum advance ends (rubber hoses) go if I go with a single or dual type:undecided?