What kinda of timing can i run with 110, how much can i really advance it. Is there a certian percentage per octane point, or is it just trail and error. I beleve that i can also put my AF in about the 11.8 to 12.1 area correct? This is at 22 lbs of boost. With bolt on except cams.

 

psi at around 26-27
timing, 10* on 260 load @ 3k rpm, progressivly going up to 20*
AFR at 12.0
Headstuds, HIGHLY RECOMMENDED

 

^what he said. Although I've been higher than 20 degrees in the higher rpms .

 

What about 100 Octane unleaded?

 

AFR to 11.7-11.8
Boost to about 25-26psi
same timing

 

10* at peak 26psi with 100 octane?

Have fun with that.

 

I was doing 8* at peak 24psi on 93 pump gas, tunned to 11.6-11.7 AFR. but that was an agreesive tune.

 

well i have a soft spring in my MBC so i cant at this moment go over 22 lbs, the track opens tomorrow so i just figured hell, ill put here on my own special race gas, its about 110-115 no lead. Bump the timing up and lean her out a little more. So i was thinking that i should keep it around 20* up top and about a 12.0 af. That should be safe with 22 lbs and high octane right.

 

well, why dont you use the stock BCS to bump up the boost? do you still have the stock boost lines?