Is old rad not doing the job, becasue you have increased horsepower? or you drive it hard?

or is it just old and wore out?

I'm surprised it's got a cross flow in there now, as it would have been born with a downflow.   From what I understand, the crossflow's are superior, so I'd say if you've got room, and if it's been set up for that before, stick with a crossflow.

However, maybe the problem is that some sacrifices were made when the crossflow was installed, and it's too small, or isn't getting the proper air flow, or it's too far in front of the fan.   

Rad shroud would work wonders here ,  the fan is not pulling any air across the rad in all likely hood.

does it heat in traffic or slow moving, but seem OK at 40 mph?

 

cdnpont wrote:

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I think doing this might have overwhelmed the stock six rad...

Here's a few choices from US Radiatior. I like the stock look of their top tanks. Standard core probably would be fine, but you have more core options with this company than most.

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