I haven't read every word of these 2 pages but there is absolutely no spark on one bank? If so it has nothing to do with carb or intake. No spark remember? If the rotor was bad or the cap was carbon tracked it is highly unlikely that just one bank doesn't spark. The firing order doesn't fire every other bank in the order, or in the case of a bad rotor or bent shaft not firing on one side of the cap. Like (1843) (6547). Change the cap and rotor just because but I bet you will find the problem in the control box. The whole block should be grounded as a unit. The negative cable to the drivers head and a strap from the firewall to the passengers head at the rear should be sufficient. New engines with fresh paint can provide a bad ground path. Clean the paint off all grounds. Hook a jumper up to be sure if you want to test. Just my take. This will be a fun one when you find out why. It doesn't make any sense. tmm
