View Full Version : Replacing Original Harrison Radiator - Any suggestions?
lizziemeister'sV6
December 2nd, 2025, 03:59 PM
1966 351 V6 Magnum in a 1965 Suburban. Has a Powerglide transmission. Use this to pull my car trailer so it gets gets worked a bit. Has factory Harrison Radiator that is getting pretty green in places. Before I have this radiator re-cored (getting to be no radiator shops around) I was wondering if there are any "good" replacement radiators that fit. Need to be "good" quality and dependable. Aluminum? Thanks! :signthankspin:
Prowbar
December 2nd, 2025, 07:20 PM
Do you have the standard or heavy duty radiator? As far as I know the heavy duty option is taller and has the top hose in the middle.
I must say I had mine re-cored and am very happy. They messed up the paint but otherwise its solid as can be. I think the aluminum radiators are unsightly.
lizziemeister'sV6
December 2nd, 2025, 11:22 PM
Thanks! - I have the HD radiator with the upper hose in the middle. Aluminum would be fine if it was good quality and fit properly. I would keep the old Harrison and hope someday to have re-cored with 3 rows.
LordNatedawg
December 3rd, 2025, 02:23 AM
Here's what I found on Champion Radiator. I've only used Champion once at work for a customer's El Camino. But it seems to have held up nicely for them.
Dimensions are listed, which should hopefully make it easier to verify fitment.
https://championradiators.com/collections/gmc-truck-radiator-shroud-1965-1966-v6
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