another radiator question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigguy69 · 07-07-2010, 05:19 PM

had a little problem with truck wantin to run a little hot. 3 core radiator. just finished running prestone cleaner through it. seem to help quite a bit. it has 1 16 inch fan on it electric. sittin in traffic it will keep creepin up. so far i have let it get 210 and shut it off. i know i need a shroud, but do you think the 1 fan is enough?i also went and bought another bottom hose as the old one didnt look to healthy. i asked the guy behind the parts counter if they had one with the spring in it. he said they dont do that anymore and the only reason the factory done it then was to pull vacuum on the cooling system.i have worked on cars and trucks since i was old enough to hold a tool. first time i had heard that one. so what you guys runnin? thanks in advance

Sinister · 07-07-2010, 05:27 PM

I'm running a 3 row radiator, stock shroud and a nylon flex fan. Runs at 190* stuck in traffic on the freeway.

Shyguy · 07-07-2010, 05:37 PM

The places I have bought lower radiatior hoses in the last few years have not had the coiled wire inside.

If you want to run one that has a wire built into it you could run a flexible hose.

Quite a few people on here run 16" electric fans, but they are mounted on the engine side of the shroud.

68GMCCustom · 07-07-2010, 05:45 PM

I was running dual fans on a 4 core for my 383...we'll see how it cools the LSx.

GASoline71 · 07-07-2010, 05:52 PM

2 row aluminum rad here with stock fan mounted to water pump. was stuckin traffic today in hot weather. Never went above 190. I have a 180 degree t-stat in the 350 that pumps out over 400 hp.

You might need to have the radiator rodded out or have a new core put in. Or a new radiator..

Gary

bigguy69 · 07-07-2010, 06:44 PM

what is the best fans or fan you guys have come across?

68GMCCustom · 07-07-2010, 10:05 PM

mine's the one made for our trucks...by old air products I think. Got mine from Brothers during a sale.

07-07-2010, 05:19 PM	#1
bigguy69 dazed and confused Join Date: Jul 2008 Location: marion nc Posts: 1,649	another radiator question had a little problem with truck wantin to run a little hot. 3 core radiator. just finished running prestone cleaner through it. seem to help quite a bit. it has 1 16 inch fan on it electric. sittin in traffic it will keep creepin up. so far i have let it get 210 and shut it off. i know i need a shroud, but do you think the 1 fan is enough?i also went and bought another bottom hose as the old one didnt look to healthy. i asked the guy behind the parts counter if they had one with the spring in it. he said they dont do that anymore and the only reason the factory done it then was to pull vacuum on the cooling system.i have worked on cars and trucks since i was old enough to hold a tool. first time i had heard that one. so what you guys runnin? thanks in advance __________________ members met: redbaron69, billsbowtie,nc67 Last edited by bigguy69; 07-07-2010 at 05:20 PM.

07-07-2010, 05:27 PM	#2
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: another radiator question I'm running a 3 row radiator, stock shroud and a nylon flex fan. Runs at 190* stuck in traffic on the freeway. __________________ Beat it to fit, Paint it to match...

07-07-2010, 05:37 PM	#3
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: another radiator question The places I have bought lower radiatior hoses in the last few years have not had the coiled wire inside. If you want to run one that has a wire built into it you could run a flexible hose. Quite a few people on here run 16" electric fans, but they are mounted on the engine side of the shroud. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.

07-07-2010, 05:45 PM	#4
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: another radiator question I was running dual fans on a 4 core for my 383...we'll see how it cools the LSx. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

07-07-2010, 06:44 PM	#6
bigguy69 dazed and confused Join Date: Jul 2008 Location: marion nc Posts: 1,649	Re: another radiator question what is the best fans or fan you guys have come across? __________________ members met: redbaron69, billsbowtie,nc67

07-07-2010, 10:05 PM	#7
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: another radiator question mine's the one made for our trucks...by old air products I think. Got mine from Brothers during a sale. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

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