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Do I need a bigger radiator for the big block?

ak bandit

ak bandit

1/2 ton status
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Sep 10, 2004
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Eagle River, Alaska
I'm swapping out my stock 350 for a big block 396. Do I need to upgrade to a bigger radiator? If so, does anyone know of any cheap ones? What about radiator mounts for a bigger, non-stock radiator?
Thanks...
 
I got a 4 core from radiator.com when I did my swap a couple of years ago. It dropped right in and has kept it cool for me. /forums/images/graemlins/thumb.gif
 
I would get the 4 core. I also got mine from the link above. was only like 175. You will also need the top retainers or clamps, the longer ones. YOu can buy them from any of the online stores like www.chevyduty.com
Cooling issues suck in the summer out on the trail so I would get the 4core.
 
I went with a 4 core also for my swap, my 3 core didn't do to well with the 307 in the hot summer days so I know it wouldn't handle the 454.

I bought the 4 core hold downs top and bottom along with new rubber pads. Wasn't able to use the bottom rubber pads so just put a thin piece of rubber down there. Still have to tackle the shroud issue. That is if I ever have this truck running again /forums/images/graemlins/shocked.gif /forums/images/graemlins/crazy.gif
 
Well, I guess I'll be adding a new radiator to "the list". I'm definitely going to look into radiator.com, cant beat $175.
Even though the summers average 60-75 here, it's probably still a good idea to upgrade...especially since the K5 sees a lot of mud. /forums/images/graemlins/peace.gif
Thanks for the replies...
 
I saw a post a couple days ago that Radiator.com has an e-bay store listing where someone got the same radiator for like $138 - awesome price.
 
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