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Old 09-17-2011, 06:48 PM   #1
truckdude239
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radiator doesn;t fit?

Went to put my old radiator in my new core support and it doesn;t fit not even teh new 4 core rubbers i got they are to big. what do i need to do i dont know what size radiator i need now i guess ing i got the wrong core support
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
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Old 09-17-2011, 08:37 PM   #2
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Re: radiator doesn;t fit?

I just drilled them out and moved them to where they did fit.
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Old 09-17-2011, 08:42 PM   #3
truckdude239
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Re: radiator doesn;t fit?

well that would be great but he whole mount is to small
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
2002 Sububran 5.3 245k
2000 Tahoe 5.3l 378

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Old 09-17-2011, 08:45 PM   #4
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Re: radiator doesn;t fit?

I went through the same issue. There are different (longer) brackets for the four core radiator. You will probably need to change the top ones too. I can't remember were I bought mine, may have been Brothers. The mount on the lower passenger side of the core support will have to be moved over more to the left (passenger side fender). I had to cut into the core suppor so the bracket would fit in that location.
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Old 09-17-2011, 09:33 PM   #5
truckdude239
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Re: radiator doesn;t fit?

i got teh top ones for the 4 core just need to figure out the bottom
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
2002 Sububran 5.3 245k
2000 Tahoe 5.3l 378

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Old 09-17-2011, 09:59 PM   #6
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Re: radiator doesn;t fit?

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Originally Posted by truckdude239 View Post
i got teh top ones for the 4 core just need to figure out the bottom

I think this is what you are looking for. Is says "These are only available as the heavy duty style." Which I would think means a 4 Core Rad.

http://www.brotherstrucks.com/prodin...number=RRL0072
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Old 09-17-2011, 10:08 PM   #7
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Re: radiator doesn;t fit?

there are threads i did about the same thing


http://67-72chevytrucks.com/vboard/s...d.php?t=241060



http://67-72chevytrucks.com/vboard/s...d.php?t=241060






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Old 09-18-2011, 08:51 AM   #8
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Re: radiator doesn;t fit?

X2 the mount is bigger on the bottom as it is on the top for the four cores, and as said one will have to be moved out some but the core support has the place made into it already for it.
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Old 09-18-2011, 09:03 AM   #9
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Re: radiator doesn;t fit?

do the news on just botl in our they have to be weld?
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
2002 Sububran 5.3 245k
2000 Tahoe 5.3l 378

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Old 09-18-2011, 09:17 AM   #10
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Re: radiator doesn;t fit?

i think i have done both i welded (on my 71) were the hole is i think factory had a pop rivet? On my wife's i tried running a small bolt it was a pita i do remember not sure what i ended up with (went out to look can't tell with everything together) that best to spot weld in place for me. I did all mine while in the truck so junk in the way.
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Last edited by Hubscrub; 09-18-2011 at 09:24 AM.
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Old 09-18-2011, 09:19 AM   #11
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Re: radiator doesn;t fit?

You do not have to weld...... being the 4 core style you will have to take a cresent wrench and bend the lip of the radiator support down a bit...then it will fit.....better to bolt it in...I did the 3 core to a 4 core in my k10....good upgrade!!!....you have the 4 core rubbers but you will need the support also

Last edited by chisler; 09-18-2011 at 09:25 AM. Reason: support
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Old 09-18-2011, 09:37 AM   #12
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Re: radiator doesn;t fit?

Yup got.to buy the lower supports if i had known id pulles then off the old support
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
2002 Sububran 5.3 245k
2000 Tahoe 5.3l 378

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Old 09-18-2011, 10:05 AM   #13
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Re: radiator doesn;t fit?

The swap is simple.It didn't take much longer than just swapping radiators.I used 4 core mounts and rad.I think I paid $180 for the rad at O'Riellys.I bolted in the lowers with small stovebolts.It was a bit tight to get to but I managed.
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Old 09-18-2011, 10:16 AM   #14
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Re: radiator doesn;t fit?

i have the rad just wish i had stole the mounts off the old core support before i sent it to the scaper, going to check with classic muscle(modern chevy) Tuesday and see if they have them and the gas tank gasket
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1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
2002 Sububran 5.3 245k
2000 Tahoe 5.3l 378

General manager for Marco's Carwash & lube
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Old 09-18-2011, 01:11 PM   #15
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Re: radiator doesn;t fit?

They are available at almost any aftermarket store. I ordered some from Wes (Classic Heartbeat) for a 4 core... and I believe they were original GM parts.

I welded the new ones in to the bottom of my rad support.

Gary
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