LVJJJ
I'm Awesome
Right now towing (94 k1500) from way up in Blaine WA to Flagsaff AZ. Been many mountain passes and up and down hills. So going from sea level to 7000 feet. as we climed the 383 began losing power and much lower gas mileage, which I know happens. In the old days (w/carburetor) we would just change the jets. I'm wondering if I should be changing the timing? Advanced, get pinging, retarding lose power, maybe answering my own question? Down here in Arizona the regular is 85 octane. Maybe I should be buying higher octane gas?