Engine Misfire - The Saga continues

[Terry Stapley]

This spring when I started the engine for the first time cylinders # 4 and # 8 were VERY intermittent in firing, headers pipes were warm but not hot. I changed the spark plugs and it seemed to correct the problem, at least at idle. When I took the Cobra out for the first time to bed the new brake pads the engine was not running correctly and had a definite misfire at about 3K rpm!
Last night I was trying to see what the issue was with the misfire and cylinders # 1 and # 8 have headers pipes that are hot, but not as hot as the other 6 cylinders. Water sprayed on the other 6 immediately puffs off and water sprayed on #1 and # 8 steams but does not puff off like on the other header pipes so they are not as hot. I pulled the spark plug wire from # 1 with engine running and could here no noticeable change in engine RPM. Holding the wire close to the spark plug I could hear the spark jumping but it made little difference if any in the way the engine ran versus being away from the plug.

418W - MSD 6AL - MSD Pro Billet Distributor - MSD Blaster Coil - Holley 750

I had a spare magnetic pickup for the dist. that I changed last evening and also a spare Blaster Coil that I changed to see if those were the culprits but no change in the engine misfire.
Last year before putting the car away for the winter I had done the following:
New Spark Plugs
New Spark Plug & Coil Wires
New Distributor Cap and Rotor
New Fuel Pump
The engine was running fine in November when put away for the winter.
There is no fuel leaking from the carb and fuel pressure is steady at 6 lbs.
Last night it was running so rich I upset my wife because even with both garage doors open the smell of unburnt hydrocarbons was wafting into the house.
Any ideas would be greatly appreciated to help me track down this gremlin!!