67 Dart GT, originally 273/904
Blueprint stoke 360
Radiator "Champion Cooling Systems All-Aluminum Radiator 1970-1972 Plymouth Duster & Dodge Dart"
Shroud "Champion Cooling Systems Aluminum Fan Shroud"
What fan are you using? My original fan has the clutch for the stock AC, it does not fit. The engine sits more on the passenger side, so I scooted the new radiator a much as possible without major changes. There is not much room for a fan.
Currently it has a fan off of a 68 Valiant slant 6, as a temporary fix. It does not produce enough air to keep it from overheating, and it needs to go back on that car eventually. It has been fine for 15 minute commute surface street driving the last week. Today finally hit 100 miles, so I tried a little freeway. It did great, however once off the freeway and 6 blocks or so in that it started acting up, and the heat spiked.
I did order "Derale 17015 Heavy Duty Fan Blade Series 1000 15" Stainless Steel Flex Fan Standard Rotation", the first one was used (ordered new) and damaged but looked like it would fit. Sent it back. The replacement was not the same, the blades were much deeper and hit the water pump. I really don't want to keep ordering and returning fans.
The original fan worked just fine with the original radiator on 273/904, 318/904, and self built stroke 360/727. But this blueprint engine is a fatty and takes up so much more space, and gives nothing but trouble when trying to match it to parts. My mixed matched various cars/years on various parts of the change divides built 360 was difficulty to find parts (and you can't use a timing light on it), but at least I knew what years/makes to replace things with and only hard to argue with local part stores. But that was like 15 years ago, and local parts store selection are awful, special order, or they have closed.