What 6 cyl radiator vs 8 cyl - The 1947 - Present Chevrolet & GMC Truck Message Board Network

grancuda · 01-07-2008, 04:55 AM

I have a factory 6 cyl truck-no A/c and eventually I want to put a 350 in it. The radiator started leaking and I am trying to decide wether to just have it fixed and redone for $100 or up grade and buy a different one. Will the stock 6 cyl radiator work for a 350 or should I go ahead and upgrade?

DavesRide · 01-07-2008, 07:50 AM

I ran a stock 6 cylinder radiator in front of my 350. It did not leak and never overheated. If you are going to put in a 350 and the radiator is leaking I would save a few more bucks to put with $100 and go for a new or even remanned one. That way you most likely will have a warranty and years of leakfree service.

ChevLoRay · 01-07-2008, 02:05 PM

I went to a radiator shop and bought a new 4-row core radiator for about $120, it seems. It was cheaper than having mine re-cored.

68gmsee · 01-07-2008, 02:20 PM

I also am using my original 6 cylinder radiator for my 350. I've repaired it twice in the last 10 or so years. Mainly due to my carelessness. I dropped a wrench on it one of the times.

Cost was about $40 or so to have it cleaned, rodded and repaired each time. I personally can't see shelling out the $300 the guy quoted me for a 4 core last time I checked with him.

I would wait until you actually get the 350 then see how it works with your radiator.

72armyswbtruck · 01-07-2008, 02:24 PM

$300 for a 4 core radiator? I only paid $120 for mine thru Autozone

**El Jay** · 01-07-2008, 02:37 PM

We just ran the radiator from the 6 when we installed the 350 & didn't have any problems, until old age caught up with the radiator & the core started weeping.
I just took it to a radiator shop & had it recored so I could keep the factory tanks (Harrison?).
I'm just strange that way.

01-07-2008, 04:55 AM	#1
grancuda Registered User Join Date: Nov 2007 Location: Central OK Posts: 396	What 6 cyl radiator vs 8 cyl I have a factory 6 cyl truck-no A/c and eventually I want to put a 350 in it. The radiator started leaking and I am trying to decide wether to just have it fixed and redone for $100 or up grade and buy a different one. Will the stock 6 cyl radiator work for a 350 or should I go ahead and upgrade?

01-07-2008, 07:50 AM	#2
DavesRide Registered User Join Date: Oct 2007 Location: Garageless, Missouri Posts: 408	Re: What 6 cyl radiator vs 8 cyl I ran a stock 6 cylinder radiator in front of my 350. It did not leak and never overheated. If you are going to put in a 350 and the radiator is leaking I would save a few more bucks to put with $100 and go for a new or even remanned one. That way you most likely will have a warranty and years of leakfree service. __________________ R.I.P ESLL Even as the body dies the spirit lives on in the people you touched

01-07-2008, 02:05 PM	#3
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: What 6 cyl radiator vs 8 cyl I went to a radiator shop and bought a new 4-row core radiator for about $120, it seems. It was cheaper than having mine re-cored. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

01-07-2008, 02:20 PM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: What 6 cyl radiator vs 8 cyl I also am using my original 6 cylinder radiator for my 350. I've repaired it twice in the last 10 or so years. Mainly due to my carelessness. I dropped a wrench on it one of the times. Cost was about $40 or so to have it cleaned, rodded and repaired each time. I personally can't see shelling out the $300 the guy quoted me for a 4 core last time I checked with him. I would wait until you actually get the 350 then see how it works with your radiator.

01-07-2008, 02:24 PM	#5
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Re: What 6 cyl radiator vs 8 cyl $300 for a 4 core radiator? I only paid $120 for mine thru Autozone __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

01-07-2008, 02:37 PM	#6
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: What 6 cyl radiator vs 8 cyl We just ran the radiator from the 6 when we installed the 350 & didn't have any problems, until old age caught up with the radiator & the core started weeping. I just took it to a radiator shop & had it recored so I could keep the factory tanks (Harrison?). I'm just strange that way.



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