3 or 4 core radiator? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Lumpy · 08-10-2002, 11:37 AM

Hello,
Right now I have a 2 core in my 67. Will a 4 core fit right in or do you need special brackets for it to fit? Will a 3 core drop right in? Thanks.........Lumpy

Beast388 · 08-10-2002, 12:13 PM

This may or may not answer your question.....my truck originally had a 3 core and when I installed a 4 core I had to replace the top brackets only. The brackets are fairly cheap.....around $10 if I remember right.

imdarren · 08-10-2002, 12:24 PM

I think the brackets are diffrent. I tried to upgrade the radiator in my 72 GMC Automatic trans. from a 2 core to a 4. Didn't fit on the bottom, even with larger 4 core brackets on the top. The brackets on the bottom of your 67 will need to be drilled out (they are sort of spot welded in) and a wider set installed if you wish to install a 4 core.
You should be able to drop in a 3 core no problem.
You don't really need a 4 core anyways unless you live in Arazona, have AC, and tow a trailer.
You could have the parts house get you a 4 core. Just tell them up front that it may not fit, and you may need to bring it back and exchange it for a 3 core.
The part that frustrated me was the 4 core was only somthing like $20 more or somthing, and it wouldn't fit!
Good luck!
Darren

**Classic Heartbeat** · 08-10-2002, 12:46 PM

2 and 3 core radiator supports are the same. 4 core supports are larger. We have both sizes in stock along with the pads. WES www.ClassicHeartbeat.com

Mudder · 08-10-2002, 01:21 PM

from a 3 to a 4 core and there was no difference in the temp by the guage.

08-10-2002, 11:37 AM	#1
Lumpy 2 tons of fun Join Date: Dec 2001 Location: Central, Ca Posts: 194	3 or 4 core radiator? Hello, Right now I have a 2 core in my 67. Will a 4 core fit right in or do you need special brackets for it to fit? Will a 3 core drop right in? Thanks.........Lumpy __________________ 67 Chevy,Short/Fleet,350,Saginaw 4-Speed,Lowered 4x2,small window,P/S,Edelbrock Intake/Carb,HEI,Gear Drive,Crane Cam 274H Three Rivers, Ca Pics at: http://www.cardomain.com/id/lumpy454

08-10-2002, 12:13 PM	#2
Beast388 Suburbans RULE! Join Date: Jan 2000 Location: Clinton, IA 52732 Posts: 689	This may or may not answer your question.....my truck originally had a 3 core and when I installed a 4 core I had to replace the top brackets only. The brackets are fairly cheap.....around $10 if I remember right. __________________ --Ben 71 GMC Suburban 4X4 The "Beast" 388 CID Stroker, TH350, NP205, 8-lug D44, 14BFF w/ Detroit, 4.10:1 gears, 4-Wheel Disks 4" Lift, 35" MT/R's.

08-10-2002, 12:24 PM	#3
imdarren Registered User Join Date: Oct 2001 Location: SW Washington Posts: 1,006	I think the brackets are diffrent. I tried to upgrade the radiator in my 72 GMC Automatic trans. from a 2 core to a 4. Didn't fit on the bottom, even with larger 4 core brackets on the top. The brackets on the bottom of your 67 will need to be drilled out (they are sort of spot welded in) and a wider set installed if you wish to install a 4 core. You should be able to drop in a 3 core no problem. You don't really need a 4 core anyways unless you live in Arazona, have AC, and tow a trailer. You could have the parts house get you a 4 core. Just tell them up front that it may not fit, and you may need to bring it back and exchange it for a 3 core. The part that frustrated me was the 4 core was only somthing like $20 more or somthing, and it wouldn't fit! Good luck! Darren __________________ Washington State 1967 Chevy C10 LWB Rodstoration In Progress. 1972 K20 Cheyenne Super

08-10-2002, 12:46 PM	#4
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	2 and 3 core radiator supports are the same. 4 core supports are larger. We have both sizes in stock along with the pads. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

08-10-2002, 01:21 PM	#5
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	i changed from a 3 to a 4 core and there was no difference in the temp by the guage.



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