Gretsch
SILVER Star
Hello all. Recently back from a 1800 mile trip in the cruiser to the mountains. She did pretty good overall, but was a dog at higher elevations as one would expect. Seems timing advance is cure for high altitude situations. I did not have timing lights and such with me to adjust all that so rolled as it was. My truck has the original 2F and is de-smogged. They got rid of the HAC valve in the process of desmogging it. Considering replacing the HAC system to allow for use at higher altitude. Before I get all into that, trying to get a bead on how effective the factory HAC system was at handing high altitude situations. Did it work well enough to warrant me replacing it to handle times when I take the truck above 4000 feet elevation? Or did it provide a marginal improvement at best at higher altitudes. I would prefer something more automatic for counteracting the effects of operating these beasts at elevation to manual options. HAC was my first choice but want to make sure it really works before I dive into that setup. Thanks in advance.