Dart over heating???

Take the fan spacers and throw 'em into the trash , then go buy a real fan ( more than 4 blades ! ) and get a fan clutch .
Direct-drive fans are worthless ; they suck power from the motor , whereas a fan which declutches is much less of a drag .

IF you end up replacing the radiator , go wide with the core . Too many rows can makes it run hotter than :twisted: .

Here's my suggestion :
-26" wide radiator
- 3 row core
- Factory fan shroud
- 5-7 paddle fan
- Fan clutch
- Overflow tank
- Distilled water ( unless your locality has good tap water )
- 185-195 degree thermostat

Best of luck :mrgreen:

x2. Add the proper shroud and all of the above.