360sbc 993 heads full length headers 2.5in duals h-pipe rpm performer intake 1411 carb started with 107 104 jets 70/42 rods 5.5-5psi at idle, spark plugs were white, changed jets 110 107 73/42 rods, no change in spark plugs still white and a couple ground electrodes continued to discolor. Oh i removed the weighted secondary butterflies.

Any one got any ideas on how to richen it?

 

You may want to increase your accelerator pump setting, and chance your step up springs. If you are having trouble, put some stiffer springs in there (one stage at a time) and move your acc pump (power valve) linkage so it's at the bottom hole. Using a wide band o2 sensor will also help, knowing under what road conditions you are running too lean makes tuning way easier.

 

Running lean while cruising, highway speeds 2k-2.5k