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Old 10-25-2025, 08:33 PM   #1
Nick_R_23
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Diesel swapped guys (Especially 73-80) Which intercooler/radiator?

As the title says, what are the diesel swap guys using for radiators/intercoolers on the early style 73-80 core supports? I’m doing a Duramax LB7 into a 74 C30. I don’t mind modifying the core support, but I’m not going to be doing any body lifts or modifying the frame. My donor is a 2002 2500HD, so I’ll have that cooling stack available to me.
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Old 03-15-2026, 07:10 PM   #2
Corts60
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Re: Diesel swapped guys (Especially 73-80) Which intercooler/radiator?

The factory radiator in the 1978 diesel trucks is a huge 4 core unit and fits right into place. Look up 78-80 trucks with 350 diesel.
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