8liter

Been trying to find a replacement radiator from less than $400 and not having much luck. I've looked at the cu1198 on rockauto, but it looks like a crossflow and I would prefer to stick with the downflow just to retain the correct mounting and hose routing.

I've looked at the gas radiator cu959 and it appears to mount the same as well as retain the downflow. Its a 2 row that is nearly the same size as my old diesel radiator except its aluminium.
The bonus is its $125 and not $$$$$

I was'nt having any cooling issues before, it just leaked slowly. My only towing consist of a racecar, and my diesel is totally stock.

Casey

d22019

I would stick with a diesel rad. The non ic rad is undersized as it is. Spending a few hundred now will save a few thousand on an engine.

JimmieD

In general a gasser requires a lot more cooling than a diesel of the same size. I'd compare capacity of the two radiators, stock 5.9 diesel to 5.9 gasser for number of rows and surface area, see how they match up? Also makes a difference if there's an intercooler, oil cooler, power steering cooler etc. blocking flow in front of raddy. Gotta consider if you're going to be towing stuff too, and if you're in a desert location.

wannadiesel

Get the right one.

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Mark Nixon

There's a used non-intercooled one listed in the classifieds.

Mark.

thrashingcows

WOW over $500 for a new rad. Maybe look into gettting your current one recored? Last one I had recored, a few years ago, 3 core from 2 core, was only about $300.

As for the gas rad...those are only about 22" wide, where as the diesel one is about 28". So I highly doubt that it would come close to cooling things properly.

Mark Nixon

Actually, an OEM Dodge TRUCK gasser radiator is a bit larger than 22", more like 28".
Also, as has already been mentioned, it actually takes LESS surface area to cool a diesel engine than it does a gasser.
If the OP ends up with a late '70s to mid-'80s heavy duty V-8 radiator, it actually has a 3 row core and MORE capacity than a non-intercooled diesel radiator.

In actuality, I have been seeing a few discussions about people having problems getting their Cummins up to a temperature that's suitable to heating the cab on chilly mornings.

Mark.

8liter

I've tried... but I'm gonna exhaust all options before I drop 500 bones.