Today my car started running like crap, misfiring & popping. I went home & checked it out & three of my plugs were fouling & totally covered with carbon & the rest are turning black also. I have a 600cfm Edelbrock(was fine on my 283) with vortec heads & just short of 10:1 compression on a 355. I have a Mallory Unilite with r44lts AC plugs gapped at .035. The only difference in my ignition system from the engine swap is that I put on an Accel canister coil(42,000max volts) in place of the Mallory high output(51,000max volts) coil that I accidently broke. Could this be too weak to get a good spark? I really cant believe that the 600cfm carb would be too rich. Any thoughts??