I think my 727 is fried. Now I'm at a crossroads...

Converter arrived yesterday....next day delivery from Summit! Anyway, rebuilding the front end today and will post pics of the old converter/pump/bushing soon.

I did notice something peculiar on the headers though. The headers are newish and polished, but #6 and 7 both look dull, like they got REAL hot. I'm going to pull all the plugs and have a look. I have a thread going on about a misfire I can't fix, but I'll ask here as well: what could make just two cylinders run so much hotter than the rest?
I'm no expert here, but my 2 cts. would be, maybe in time they will all look the same, being new. The other thought is, maybe those two exhaust valves are opening to soon or not closing all the way. You should here a popping sound. Check compression on those two cylinders.