5.3L/TH350 8.6:1 compression, 93 octane, Turbo, IAT around 105 and running 15# of boost. My A/F is at 11.4 timing @ 9*

I read to initially start the timing out low. I have it set at 9*
I'd just like to see if anyone has similar setup and how much timing they can get away with, and what i can change it to safely.

Thanks.

 

i was running 19degrees of timing, 10.9:1 air fuel, and 15 psi on a stock bottom end for a weekend...no problems at all and car pulled like a raped ape.

 

I have been running a/f 10.9-11.1 15-17* timing and 10psi with iats around 80-90 on my stock motor for about 10 months driving everyday on 91octane