Hey guys I am a refuge over from the CobraClub and need some help.

I have a B&M supercharged 350 and am getting horrible gas mileage. On the order of ~5 mpg in town and ~7 mpg on the freeway. Currently I am running 9 pounds of boost on 91 octane stuff, compression is 7.2:1 rear end ration is 2.91 cruising around 2400 rpm at 65

I need to get better gas mileage for the simple fact that am taking longer trips in the car and can't get a fuel cell bigger then 10 gallons to fit in the trunk.

I dropped the boost down to try and get some better numbers (4 psi). In town numbers shot to ~8 mpg and freeway to ~11 mpg.

I still want to drop the boost down some more, but am worried mainly because I can;t find anybosy else doing this. I am afriad most of all if roms that the blower spin at are two low the idle will go all to heck?

Also after talking to Holley, they believe that I can run a 600crf supercharger specific carb down from my 800 double pumper. Anybody know what that will do to the gas mileage.

I know my jetting is right because my wideband is kicking out readings around 13:1 accross the board, but my cruise seams to float around 12:1 which seams a little rich to me.

So any pointers would be great, I need to get at least 15 mpg out of this thing to continue driving it. If I pull the blower and put a more traditional setup on the motor whats a well built 350 putting out about 300hp with a street cam get for mileage. (Cars 2200 pounds)