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#1 |
Senior Member
![]() Join Date: Mar 2014
Location: Toano, VA
Posts: 874
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Radiator Questions!
Well Im in the assembly stage (finally) of my 70. So this brings lot of questions to mind during assembly.
The main one I'm battling right now is the radiator fitment. I have a new core support in my truck from LMC, which actually is working out very good, but the radiator I have (came with truck when bought, looks 'stock') does not fit. Ive read some info on HD mounts (upper/lower) but am still left with some questions. Does this core support not have the HD lower mounts? What is the measurement for the HD lower mounts? Also, does my radiator look stock? The P/O had removed the lower mounts, bolted (literally) the radiator to the core support and used angle iron to hold it in place, so I have no original reference of fitment with it. See attached photos. I'm not afraid to cut and install new ones, but before I cut up my nice replacement support I want to know for sure. Also, if it comes down to it and I need to just have something that works, would a 2 or 3 row work okay for a mild cam/stock bottom end 350 V8? Average summer temps in VA are 90-100 June - August. Thanks in advance.
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"Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809 |
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#2 |
Senior Member
![]() Join Date: Mar 2014
Location: Toano, VA
Posts: 874
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Re: Radiator Questions!
More pics.
__________________
"Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809 |
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#3 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Radiator Questions!
It appears to me that your radiator is not for your truck. The bottom return is the give away. It should turn toward and up to the center...yours appears to be out out the square body era and your mounts are for a three row radiator possibly.
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#4 |
Registered User
Join Date: Feb 2016
Location: Ottawa Ontario
Posts: 41
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Re: Radiator Questions!
Doesn't look right to me either, i have a 2 row aluminum replacement from northern rad it fits in the 3 row brackets that came with the blazer that rad you have pictured looks like a rad out of a 6.2 diesel square body truck to me ( those are a 2.5 inch core ) but i could be wrong.
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#5 |
Registered User
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
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Re: Radiator Questions!
I'm facing the same problem. My replacement core support came from a 1970 big block'ed truck and I think all my replacement radiators have lower bracket problems. I may have to fab up something.
I am tempted to order a custom, USA made radiator. "Buy American, hire American, the Trump Effect." |
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#6 |
Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
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Re: Radiator Questions!
It looks like your lower rad mounts are 3 core, need 4 core mounts, the rad support must be "massaged" to fit the 4 core mounts. 1st pic is 3 core, 2nd is 4 core.
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#7 |
Registered User
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
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Re: Radiator Questions!
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#8 |
Registered User
Join Date: Aug 2012
Location: Midland, TX
Posts: 1,267
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Re: Radiator Questions!
I have this installed in my 72GMC
http://www.speedcooling.com/1967_197..._Radiator.html Great price and it fits like a glove. I've got 11k miles on it Hot West Texas with zero issues. You can see more pics in my build thread. ![]()
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1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i |
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#9 |
Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
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Re: Radiator Questions!
GMC Pauls, upper bracket 213422, lower 213423, rubber pads 213424. LMC should have them too.
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#10 |
Registered User
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
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Re: Radiator Questions!
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#11 | |
Registered User
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
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Re: Radiator Questions!
Quote:
![]() It may just be that I have three row brackets on the bottom, those came attached to the core support. I'll have a look into 4 row lower brackets and go from there. |
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#12 |
70+ ( Old Skool Club )
![]() Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,117
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Re: Radiator Questions!
subscribed
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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#13 | |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,233
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Re: Radiator Questions!
Quote:
A crescent wrench works real well OP. Before: ![]() After: ![]()
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#14 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: Radiator Questions!
Mine had a bolt attached to the bottom of the mount that goes through the support but I was lucky, I had four core mounts already installed. I have a three core and a four core radiator but I didn't have the four core top mounts so I used the three core. It was in when the PO had it and it worked fine so I am going to use it.
Also I lost one of the rubber inserts for one of the top ones, and I got creative and taped the support up and filled it with RTV silicon, and it works great. Then I found the original!
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#15 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,233
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Re: Radiator Questions!
Whether it was factory or a mechanic I once used, I believe the fact the bottom brackets weren't fitted contributed to one of my top brackets coming apart at the spot welds. I bought all new brackets, repro., from Olympia Wa. guy. Nothing special about original brackets.
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#16 |
Senior Member
![]() Join Date: Mar 2014
Location: Toano, VA
Posts: 874
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Re: Radiator Questions!
HERES THE SOLUTION (I'm the OP'er and I found my solution): my radiator is a stock style 4 row radiator. My LMC core support (in my original post pics) had 2-3 row lower brackets. I needed to get the 4 row lower brackets. A friend of mine had lower brackets from a 1-ton truck, so I removed them and installed them on mine (massaging needed as stated above) and the radiator fits great and is ready to be run. Parts vendors do sell these brackets and they are labeled as "HD brackets".
__________________
"Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809 |
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#17 |
Registered User
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
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Re: Radiator Questions!
I love the "HERE'S THE SOLUTION" in all caps, it's like something I would type.
HD brackets huh? I am going to have to do that in the next week or so, it's high time to get my truck ready for assembly! Thanks brother! |
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#18 |
Senior Member
![]() Join Date: Mar 2014
Location: Toano, VA
Posts: 874
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Re: Radiator Questions!
Not a problem, IMHO theres too many threads where guys asks questions, figure it out on their own and never come back with their answers!
__________________
"Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809 |
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Tags |
core, hd mounts, heavy duty, mount, radiator |
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