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B73 or 75 radiator

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                Can anyone tell me the standard number of core rows and tube dimensions for a 73 or 75 radiator core. I'm installing a five row 1/2" tube core.

                 Thanks for any reply's

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Have two here but I am not 100% sure if they are OEM.

One is out of Cummins truck (B73) with a core thickness of 2.75", 4 rows of 1/2" tubes in a staggered pattern with 10 fins per inch.

The one out of the B75 is 2.375" thick with the remaining specs same as above.

 

 

 

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                             Thanks for the reply, the one that was in it was 3/4 tube 4 row 3.00 thick. But in talking to the builder in B.C. those 3/4 tube radiators flowed to fast. and the coolant would not cool down enough exiting the bottom tank.

                             Years ago they built 1/2" tube five row for Cummins powered loggers. Thanks again.

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Yup, too fast is no good for heat transfer.  Sounds like you will be all set.

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