Author Topic: 18" to 26" radiator install  (Read 3869 times)

Offline dave73chally

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18" to 26" radiator install
« on: November 02, 2014 - 04:52:55 PM »
Have a 73 challenger with an original 18" radiator. Replacing with a champion 26" triple core (cc2375).

Here's what I'm looking to buy:
http://m.ebay.com/itm/271649916163?nav=SEARCH

Will this bolt right in? What do I need for the install (other than new hoses)? Anyone have a source for the rubber mounts?
73 Challenger
512 / 4spd / Hotchkis & QA1 Suspension




Offline roadman5312

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Re: 18" to 26" radiator install
« Reply #1 on: November 02, 2014 - 05:06:04 PM »
Rubber mounts  :clueless:

Offline anlauto

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Re: 18" to 26" radiator install
« Reply #2 on: November 02, 2014 - 05:23:29 PM »
You would need a 26" rad support to bolt it into.
I've taught you everything you know.....but I haven't taught you everything I know !
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Offline Pimtao

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Re: 18" to 26" radiator install
« Reply #3 on: November 02, 2014 - 05:46:51 PM »
You would need a 26" rad support to bolt it into.

So let's say I would buy an aftermarket rad support from amd to upgrade to a 26" rad how would I know the right sizes of the rad support the seem to come only in one size  :dunno: I always thought rads just interchange...

Offline Katfish

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Re: 18" to 26" radiator install
« Reply #4 on: November 02, 2014 - 05:56:48 PM »
Left side bolts in, drill new holes in right side.  You can trim the opening if you want, I didn't.


Offline dave73chally

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Re: 18" to 26" radiator install
« Reply #5 on: November 02, 2014 - 05:59:22 PM »
I read some users used some sort of rubber bushing when installing, I think brads70 did he if sees this to chime in
73 Challenger
512 / 4spd / Hotchkis & QA1 Suspension

Offline ToxicWolf

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Re: 18" to 26" radiator install
« Reply #6 on: November 02, 2014 - 06:04:34 PM »
Someone will know the real answer but from electrical work I know that when copper and aluminium are connected we had to use special connectors to keep them from reacting with each other.  I suspect it is something like that.   :clueless:

Offline Strawdawg

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Re: 18" to 26" radiator install
« Reply #7 on: November 02, 2014 - 08:31:39 PM »
Provides a little flex so the radiator won't get cracking if the support torques a little

Offline Chryco Psycho

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Re: 18" to 26" radiator install
« Reply #8 on: November 03, 2014 - 10:16:58 AM »
all aluminum rads are contained on rubber mount systems from the factory  as alum will not put up with flexing so I would recommned isolating the rad using rubber somehow , mounting direct to the firewall the rad may not last very long

Challenger - You`ll wish You Hadn`t

Offline CUDA JAS

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Re: 18" to 26" radiator install
« Reply #9 on: November 03, 2014 - 02:15:33 PM »
you know there is a member here that sells those rads... :2thumbs:

IF you want it to look right, I agree

You would need a 26" rad support to bolt it into.

Jason
74 'cuda 360/727



Gearhead: car nut, automotive enthusiast, one who loves hot rods, muscle cars, hot trucks, burnin' rubber and neck snapping performance. 

Just call me a gearhead!

Offline dave73chally

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Re: 18" to 26" radiator install
« Reply #10 on: November 03, 2014 - 03:23:48 PM »
Is ChallengerGary the member who sells these?

Also, in terms of a new rad support, it looks like AMD only sells one (AMD 350-1570-S) and it does not specify the radiator size opening. Are they all 26"?
73 Challenger
512 / 4spd / Hotchkis & QA1 Suspension

Offline anlauto

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Re: 18" to 26" radiator install
« Reply #11 on: November 03, 2014 - 03:49:04 PM »
YES
I've taught you everything you know.....but I haven't taught you everything I know !
www.alangallantautomotiverestoration.com

Offline brads70

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Re: 18" to 26" radiator install
« Reply #12 on: November 03, 2014 - 04:41:49 PM »
I read some users used some sort of rubber bushing when installing, I think brads70 did he if sees this to chime in
I used an Allstar rad in mine , aluminum, common circle track rad, cheap to. I used well nuts to mount it in to absorb vibrations. Similar to Katfish's picture. Lowes stocks them in various sizes.
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0

Offline Pimtao

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Re: 18" to 26" radiator install
« Reply #13 on: November 03, 2014 - 05:50:54 PM »
Is ChallengerGary the member who sells these?

Also, in terms of a new rad support, it looks like AMD only sells one (AMD 350-1570-S) and it does not specify the radiator size opening. Are they all 26"?


http://www.restorationradiators.com/products.asp?cat=1

Is that's the same guy? I was thinking getting the 26"small block.

Offline ToxicWolf

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Re: 18" to 26" radiator install
« Reply #14 on: November 03, 2014 - 09:58:01 PM »
http://www.restorationradiators.com/products.asp?cat=1

Is that's the same guy? I was thinking getting the 26"small block.


I just ordered a 26 inch from him.   :bigsmile: