My radiator insides look like a coral reef. Heavy deposits and some of the tubes are clogged. We had a mid 70 degree day last week and noticed the temp gauge was a bit hotter. I just grabbed a Champion radiator from ebay at $160. The F body replacement at my local parts store was around $140. I like the full aluminum construction and two rows instead of one. I've read good and bad here about these but taking the chance anyway. When I pull the engine to revamp it, I plan on flushing the block out. It has muddy coolant despite me flushing it twice. Going to pull the side freeze plugs and use a power washer in and around through the holes. This should eradicate the sediment. I'll flush the heater core again also. I just about have all the needed parts for my 350's revamp. The April 9th drag race is looming