The 1947 - Present Chevrolet & GMC Truck Message Board Network

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- - C30 dually Cummins swap (https://67-72chevytrucks.com/vboard/showthread.php?t=862881)

Cbrezee

02-21-2026 01:39 PM

C30 dually Cummins swap

Has anyone used a 3 core aluminum radiator instead of using a dodge radiator?
I’d like to keep to the same height and width of the stock size. Would that keep the Cummins cool enough? I’m keeping motor stock for now. Maybe a bigger turbo and injectors someday.

Cbrezee

02-23-2026 10:52 PM

Re: C30 dually Cummins swap

Nobody?

Dewey72

02-24-2026 02:31 PM

Re: C30 dually Cummins swap

I'm running the stock 72 radiator with no problem with heat. Modified turbo and fuel pin and governor spring. Haven't towed with it though but never gets above normal temp.

Cbrezee

02-24-2026 11:40 PM

Re: C30 dually Cummins swap

Thanks. Appreciate the info!

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