416 issues - losing patience

Ditch the junk Champion radiator. Get a Griffin. I put a brand new champion cc375 in my coronet. Car was a ground up build. I tried timing ,jetting ,different pump pulleys, different thermostats and then tried different hole size restrictors instead of thermostats and water wetter and purple ice.Went as far as new head gaskets and head inspection. Never would have believed it was my brand new radiator.Temperature slowly creeped up and wouldnt stop.Finally had enough of driving the car 5 miles at a time and shutting it down. After 6 months of weekends trying everything under the sun I bought a griffin muscle car series with 2 rows of 1.25 tubes. Hasnt run hot since.Champion sucks imo. But thats just my opinion.BTW that peice of craps still in my garage. Might try it on a stock 318 one day.