1964-1974 Tempest/LeMans/GTO Engine Tuning
Hello guys,
I am new here and I apologize if this topic was already solved (tough I couldn't find my exact problem in the forum).
So to let's start with, I am owner of what looks like to be quite a survivor, a 1966 Pontiac Star Chief Executive 4-Door HT with the 389cu in engine and TH400...