tranny oil cooler/radiatpr question
 

On my 1981 C30 that originally came with 454 but now has a 350, the radiator has a cooler for the automatic transmission, and i also have a separate transmission cooler. They are chaned together. The truck is used mostly for towing another car. Will just one transmission oil cooler be enough if i replace the radiator with standard MT model for better cooling.

thanks,
steve k.