Is this a fair radiator?

Tad said

Running a 340 that gets up around 200+ within 15 minutes or so. the radiator is too small I believe

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There are so many reasons that the rad is not "too small"

1. Fan type
2. Number of blades
3. Pitch of blades
4. Diameter of crank pulley
5. Diameter of water pump pulley
6. Number of impeller blades in waterpump
7. Thermostat temp (if it is a 195, 200 would be a normal temp)
8. Where and how you are measuring the temp
9. clogged radiator passages
10. Clogged water passages in engine
11. Number of rows in rad
12. Fins per inch between tubes
13. Aftermarket fan shroud
14. Lack of bypass hose.
15. Engine mods
16. Timing
17. Carb lean

What did I miss?

Start with what the factory put in a 340 car. Then "improve" from there.