I've been thinking about this recently. My motor is a 360, and it has about 10.6:1 compression ratio with eddy closed chamber heads, and a mild comp XE268 cam in it. I have been running 94 octane fuel in it and I haven't experienced any detonation issues with it. The timing is set at about 16-17 initial and 35-36 total timing, seems to be happiest there so I kept it there.
The 94 octane fuel is readily available around me, but it has alcohol in it, which from what I understand isn't the best for the carb and everything, especially when I am storing it in my garage for the winter. All 94 it seems has alcohol in it around me, I usually go to petro-canada for it. I know at shell its either 91-92 octane and there is no alcohol in it. I'm not even sure if I need 94 octane, would I be better off with the shell fuel? Think I will experience some detonation issues with it?
The 94 octane fuel is readily available around me, but it has alcohol in it, which from what I understand isn't the best for the carb and everything, especially when I am storing it in my garage for the winter. All 94 it seems has alcohol in it around me, I usually go to petro-canada for it. I know at shell its either 91-92 octane and there is no alcohol in it. I'm not even sure if I need 94 octane, would I be better off with the shell fuel? Think I will experience some detonation issues with it?