'52 8n Back firing through carb

I have a problem with my 8n back firing throught the carb. I have installed new wires, plugs, cab, rotor, points, exhaust manifold, battery and rebuilt the carb in my effort to fix this problem. I am contemplating whether or not to buy a new carb but this is by far the most expensive problem that I have had yet because of all of the items that I replaced that were not the culprit. Please help...

When you report you changed your "wires" and then complain about "backfiring", why do I suspect that there just might be a cause/effect relationship?

Check your firing order, 1,2,4,3 CCW. You do understand that CCW means Counter Clock Wize, don't you? ..... .....respectfully, Dell

Backfiring thru the carb can only happen if one of your intake valves is hung open. Do a compression check.

Backfiring thru the exhaust can becaused by rich mixure and hot exhaust valve, lean mixture, leaky manifold gasket, leaky carb shaft seal, incorrect ignition timing including mis-wired sparkies, hung exhust valve. Do a compression check.

If'n ya suspect a hung valve you'll need to remove the valve spring covers behind your intake manifold and watch while you crank yer engine over. Sometimes it obvious, sometimes they're sticky and can fool ya, watch'em close. May even haffta hand crank'er. Remove yer sparkies to make turning eazy..... .....Dell

I would do a compression check - dry then 'wet' (a little engine oil or MMO) and write down the results.
This will help determine if a valve may be stuck or if you have other internal engine problems. It sounds like a timing issue.
Post the results here and someone will be better able to help pinpoint the problem.

hth

Mountainman...CA