From what I have gathered their is no formula for the amount of boost you can run based on octane level. Timing will play a part in this I know. Assume max power in these conditions. The best opinon I could get is 2psi per 3 octane points. So if I can run 12psi safe on pump gas then I can run 22psi on 110, based on this theroy.

C-16 is getting very expensive around here. Im not sure at what point I should run it. I was thinking anything more then 22psi, but I dont know.
Post your boost/timing and amount of octane you run. Ill start:
20psi, 109 motor octane, 27*

 

I run 14 lbs at 26* (C16 gas). I run C-16 gas more for safety purposes than anything else. I am looking to step up the boost to 18lbs and probably bump the timing up 2 degrees. BTW my compression is 9.5:1

 

Wouldn't you think the static compression ratio would factor in as well?

Marty

 

Yes. From my example 12psi is safe for me, but i could probably go to 15psi with my 8.5:1...

Keep em' coming

 

15#s, pump gas, 23* timing, 8.9:1 compression

next setup im shooting for 18+#s on pump gas.....we'll see.

 

7psi S-Trim, 24*, 93 octane. 10.4:1 CR

might wanna look into alky injection. friend of mine julio makes them in progressive kits and in regular WOT or psi based kits.