1964-1974 Tempest, Lemans & GTO Engine Compartment
1. Engine (numbers 400 on base 68 GTO) was completely rebuilt summer 2018.
2. Problem-free until two weeks ago, when I noticed a ticking.
3. With a stethoscope I isolated the ticking to the passenger valve cover.
4. Using a timing light I noticed the ticking was synced with the light, not...