Thats what it runs stock... I agree that its way out of proportion still

 

+1.. Don't run it with that fan... Get a good radiator to match that engine or else you will pay for it...

 

Well with some other advice from 4btswaps-evidently the 4bt takes very little to stay cool, so Ive decided to run my stock radiator and trans cooler. Ill get to keep my heat exchanger this way and I will also be able to use stock brackets and not have to fab anything extra other than hose connections

Stock cooled a 5.9L with 245hp- should work with 3.9L and only 105hp peak...