Spark plugs?

[bud45]

Got a '69 GMC with a '65 285 installed...it came with Autolite R43 plugs which stayed fouled all the time...went to R45, which lasted a little longer...went to R46SX plugs which I believe are hotter and do last about 6 months.

Well, I wasn't near my usual auto parts supplier, so I went to another on a short trip & got the Champion equivalant to the R45...the counterman said the Autolite plugs weren't right & these would be right..RJ8YC, I think...anyway, they did just like the R45 plugs did- lasted about 3 weeks, so I got some more R46SX plugs & installed them this afternoon. When I pulled the Champions out , theye were still wet & smelled of gas, even though it had been more than 24 hours since I had driven it. When I compared them to the R45 plugs, the tips were the same...the R46SX plugs' tips were extended a little more, telling me they're a little hotter plug- or am I wrong??? Still have a little hesitation & some skips at low speed, but it's better.

I have recently gone over the entire ignition system with Blue Point parts & the shaft in the distributor is good & solid, no side-to-sode travel. I have the carb leaned out almost to the point where the screws are about to fall out, but I suspect I may have to replace it with a new carb, as well as a new fuel pump....

Ideas? Are there any hotter plugs I can go with now, until I redo the fuel system? The countermen at the parts houses I frequent are not like the parts men of old, who knew things like heat ranges & upgrades/changes.

FYI, I ran four heat ranges over in my bone-stock Dodge 440 with the old wide block 318 and it ran clean....