radiator for 350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

thump16 · 11-12-2008, 06:06 PM

I have a single core radiator that came installed on my truck. Is that going to be big enough to cool my truck? I have to 14 inch fans wired up but I'm probably going to reinstall my mech fan until I get a better fan relay.

**old Rusty C10** · 11-13-2008, 12:07 AM

personally i would only run a four core on my trucks... but im kinda a believer in overkill

Hoods69BadBowTie · 11-13-2008, 12:27 AM

Wow defiantly seems to small I like the 4 core rads but have run 3 cores before but nothing smaller! I would think that your truck would want to overheat but I don't know.

Pyrotechnic · 11-13-2008, 12:55 AM

3 core is stock and you should have at least that. If purchasing new, I think it's worth it going for a 4 core for the same price. You just need the larger rubber pads which are still available from GM and will cost about $20 for all 4.

thump16 · 11-13-2008, 08:54 AM

So it's going to over heat with the single core rad? Advance auto showed the single core rad as a direct replacement for my truck. It was the lowest model they had.

thump16 · 11-13-2008, 11:43 AM

I figured it out.

Duro5341 · 11-14-2008, 12:49 AM

It all depends on what size core the truck came with stock.

If it's a 17" core, it will be a 3 core factory, if it's the HD 19" core the 350 came with a 2 core factory.

I recently upgraded mine from a 19" 2 core, to a 19" 4 core, all I had to do was get the proper rubbers in the rad support, and the 454 upper rad brace...and slightly trim the existing shroud to fit. It pushes the shoud about 1" into the fan, but the rear edges if the blade are at the end of the shoud for proper air pulling power.

Just my 2 cents
Duro

thump16 · 11-14-2008, 08:10 AM

I looked in side and it is actually a 2 core radiator. The truck was a factory 305 powered vehicle. I never had a problem of the truck cooling before. The old hot rodded engine was just a piece of put together crap. Non-roller motor turned roller motor with missing internals + holley 450 carb + a whole lot of shade tree performance options

. I guess the radio and the radiator was the only thing he did right.

11-12-2008, 06:06 PM	#1
thump16 Registered User Join Date: Jul 2005 Location: Valdosta GA Posts: 708	radiator for 350 I have a single core radiator that came installed on my truck. Is that going to be big enough to cool my truck? I have to 14 inch fans wired up but I'm probably going to reinstall my mech fan until I get a better fan relay.

11-13-2008, 12:07 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: radiator for 350 personally i would only run a four core on my trucks... but im kinda a believer in overkill __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

11-13-2008, 12:27 AM	#3
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: radiator for 350 Wow defiantly seems to small I like the 4 core rads but have run 3 cores before but nothing smaller! I would think that your truck would want to overheat but I don't know. __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!! Last edited by Hoods69BadBowTie; 11-13-2008 at 12:28 AM.

11-13-2008, 12:55 AM	#4
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: radiator for 350 3 core is stock and you should have at least that. If purchasing new, I think it's worth it going for a 4 core for the same price. You just need the larger rubber pads which are still available from GM and will cost about $20 for all 4. __________________ 1977 GMC Sierra Grande

11-13-2008, 08:54 AM	#5
thump16 Registered User Join Date: Jul 2005 Location: Valdosta GA Posts: 708	Re: radiator for 350 So it's going to over heat with the single core rad? Advance auto showed the single core rad as a direct replacement for my truck. It was the lowest model they had. Last edited by thump16; 11-13-2008 at 08:56 AM.

11-13-2008, 11:43 AM	#6
thump16 Registered User Join Date: Jul 2005 Location: Valdosta GA Posts: 708	Re: radiator for 350 I figured it out.

11-14-2008, 12:49 AM	#7
Duro5341 Registered User Join Date: Dec 2006 Location: Earth Posts: 239	Re: radiator for 350 It all depends on what size core the truck came with stock. If it's a 17" core, it will be a 3 core factory, if it's the HD 19" core the 350 came with a 2 core factory. I recently upgraded mine from a 19" 2 core, to a 19" 4 core, all I had to do was get the proper rubbers in the rad support, and the 454 upper rad brace...and slightly trim the existing shroud to fit. It pushes the shoud about 1" into the fan, but the rear edges if the blade are at the end of the shoud for proper air pulling power. Just my 2 cents Duro __________________ -1986 K10 LWB, 350 HD,TH400 3.08, 30 spline 10 bolt, with an Auburn Posi, 31" tires All original, second owner truck -1979 Monte Carlo, 350, 200r4, 3.73 posi -1987 GT T-top Mustang - slow moving project

11-14-2008, 08:10 AM	#8
thump16 Registered User Join Date: Jul 2005 Location: Valdosta GA Posts: 708	Re: radiator for 350 I looked in side and it is actually a 2 core radiator. The truck was a factory 305 powered vehicle. I never had a problem of the truck cooling before. The old hot rodded engine was just a piece of put together crap. Non-roller motor turned roller motor with missing internals + holley 450 carb + a whole lot of shade tree performance options. I guess the radio and the radiator was the only thing he did right. Last edited by thump16; 11-14-2008 at 08:11 AM.



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