I've got a Holley 650 dual feed double pumper on my 13b bridgeport and i haven't been able to get her to run right. I bought a jet kit from Holley the other day and ran plug tests to see how she was running. When i pulled the plugs after running at 45 then cutting the car off, they were ghost white; so i i stepped up the primaries from 66 to 70. She was ruining a little better but still not getting nearly enough power as she's capable of. The secondary jets were at 84 because the potter valve was plugged so i tried stepping it up to 86. Problem is I'm still not getting the power i should be. Any suggestions are greatly appreciated. Thank you.

 

The ones on the left are leading

 

What kinda plugs are those? Have you tried NGKs?

Still looks lean to me. Should be creamy brown.

A wide band helps out a TON when tuning cars. Chops are fine for bikes though.

 

They are ngks, not the ones i wanted though. I finally found the ones with the solid circle for the spark contact. I tried running 70 primaries and 80 secondaries because my secondary pv is blocked off and I'm getting a popping especially at high rpm.