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I don't know what the differences are between a SB and BB 22" rad but you certainly don't need a 26" rad; waste of time and money.

My #'s 440-6 car has the factory 22" rad because it doesn't have the following;

- A/C (N/A with N96, 440-6 or Hemi)
- Trailer towing package (N/A 225,440-6 or Hemi)
- Axle Package (mandatory with 4spd and 440-4, 440-6 or Hemi).

The 22" rad is standard for all Mopar engines except the Hemi which automatically mandated the max cooling option.

99% of all cooling problems have nothing to do with the size of the radiator; clean block, clean rad, proper water pump. proper fan, fan shroud, operational thermostat, spring in the lower hose to prevent collapse under suction pressure, etc. etc.


Dave

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