C30 dually Cummins swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Cbrezee** · 02-21-2026, 01:39 PM

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

Nobody?

Dewey72 · 02-24-2026, 02:31 PM

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

Thanks. Appreciate the info!

02-21-2026, 01:39 PM	#1
Cbrezee New Member Join Date: Oct 2023 Location: Ulster Posts: 3	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.

02-23-2026, 10:52 PM	#2
Cbrezee New Member Join Date: Oct 2023 Location: Ulster Posts: 3	Re: C30 dually Cummins swap Nobody?

02-24-2026, 02:31 PM	#3
Dewey72 Registered User Join Date: Jun 2013 Location: Canby OR Posts: 71	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.

02-24-2026, 11:40 PM	#4
Cbrezee New Member Join Date: Oct 2023 Location: Ulster Posts: 3	Re: C30 dually Cummins swap Thanks. Appreciate the info!



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