Got a 383cid that is only running on cylinder number 3, 5, 2, 8.
Every once in a while it shoots trough carb an it run on all eight like normal for a while.(a while sice it have done it now)
I got spark on all plugs and the fuel level in carb is normal.

Following have been checked/replaced.

- Spark plugs/wires
- distributor cap and rotor
- coil and ignition box
- valves and lifters
- comp test and leakdown test
- fuel filter/pump

see attached images of the spark plug from cylinder number 2.

Engine is 0,60 over with a stock bottom, edelbrock rpm heads 84cc,lunati voodoo hydrulic camshaft, harland sharp rockes and a mighty demon 750 carb.

Please let me know if you know some more things I should check and look for.