4 core radiator installation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

KEH · 06-26-2005, 03:04 PM

I ordered a 4 core radiator from radiator.com. I am going from a 3 row and someone had said on another thread that new mounts are required with a 4 core. Radiator.com said that it is an OEM install.

Will I need new brackets? If so, I guess vendors will have them or do I have to go to the parts yard?

Thanks

**Stocker** · 06-26-2005, 03:13 PM

I have also heard new mounts are needed, but last year I installed a new 4-row using the oem mounts.

KEH · 06-26-2005, 03:30 PM

Cool, thanks Stocker.

bouncytruck · 06-26-2005, 06:13 PM

You need new retainers & pads for the top & bottom. All the vendors should have them. Your local chevy dealership should too. They are just slightly longer than the 3 core brakets and not very expensive. I replaced the 3 core in my '69 Blazer with a 4 core.

71RestoRod · 06-26-2005, 07:09 PM

You will also most likely have to modify your radiator support as well. No big deal, you just bend down the lip on the support so the longer bottom 4-core retainers can bolt down flush to the support.

71Dragtruck · 06-26-2005, 07:31 PM

When I went from a 3 to a 4 in my 71 GMC 2wd it bolted right in without changing a thing.

krue · 06-26-2005, 08:16 PM

It may depend on how worn your radiator mounts are.

dwaite72lnghrn · 06-26-2005, 09:03 PM

If you have a 3 core now all you need todo is put in new rubber mounts as long as the bottom mounts are not rusted off. The old 3 core rubber will probable work but the new rubber will give a better cusion. I just put a 4 core from GMC pauls in.

06-26-2005, 03:04 PM	#1
KEH Better late than never Join Date: Dec 2001 Location: Columbus, IN Posts: 324	4 core radiator installation I ordered a 4 core radiator from radiator.com. I am going from a 3 row and someone had said on another thread that new mounts are required with a 4 core. Radiator.com said that it is an OEM install. Will I need new brackets? If so, I guess vendors will have them or do I have to go to the parts yard? Thanks __________________ 1970 C/10 SWB Stepside

06-26-2005, 03:13 PM	#2
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,722	I have also heard new mounts are needed, but last year I installed a new 4-row using the oem mounts. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

06-26-2005, 03:30 PM	#3
KEH Better late than never Join Date: Dec 2001 Location: Columbus, IN Posts: 324	Cool, thanks Stocker. __________________ 1970 C/10 SWB Stepside

06-26-2005, 06:13 PM	#4
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,038	You need new retainers & pads for the top & bottom. All the vendors should have them. Your local chevy dealership should too. They are just slightly longer than the 3 core brakets and not very expensive. I replaced the 3 core in my '69 Blazer with a 4 core. __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

06-26-2005, 07:09 PM	#5
71RestoRod Registered User Join Date: Sep 2003 Location: Evergreen, CO Posts: 492	You will also most likely have to modify your radiator support as well. No big deal, you just bend down the lip on the support so the longer bottom 4-core retainers can bolt down flush to the support. __________________ 71 Blazer / GMPP ZZ383 / MPFI / 700R4 / 4-Wheel Disk / Ground-up frame off almost completed resto-mod

06-26-2005, 07:31 PM	#6
71Dragtruck Registered User Join Date: Jun 2004 Location: Saskatchewan, Canada Posts: 1,368	When I went from a 3 to a 4 in my 71 GMC 2wd it bolted right in without changing a thing.

06-26-2005, 08:16 PM	#7
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	It may depend on how worn your radiator mounts are. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

06-26-2005, 09:03 PM	#8
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	If you have a 3 core now all you need todo is put in new rubber mounts as long as the bottom mounts are not rusted off. The old 3 core rubber will probable work but the new rubber will give a better cusion. I just put a 4 core from GMC pauls in. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

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