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03-08-2013, 10:52 AM
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#1 |
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Registered User
 
Join Date: Mar 2011
Location: bolivar, mo
Posts: 839
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Engine Cooling
I have a question on engine cooling and would like to hear any thoughts or especially experience.
My question is: Is a 4 core radiator really necessary? My 68 is going to have a relatively stock engine with the exception of a mild cam for more low end. The truck will have aftermarket heat and air and it will be a manual trans. The rear will be a 3.08 which will keep the R's low on the hiway. She will be mainly driven in warm weather and languish in the garage during the winters. Im wanting to use the three core I already have, install a shroud and a clutch fan. Didnt this combo work 40 years ago when the trucks were new? (or did it?) The p o of my truck had double 19" fans on the truck and still had trouble keeping it cool??
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1997 shortie stepside 1968 short stepside 1966 mustang 1966 chevelle ss Dont always go the cheapest route--You can save yourself into the poorhouse! My Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=489030 |
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03-08-2013, 11:34 AM
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#2 |
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Registered User
Join Date: Sep 2012
Location: San Antonio, TX
Posts: 1,026
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Re: Engine Cooling
I know all a/c trucks came with the 4 row radiator from the factory during those years. I personally always have 4 core radiators on my trucks. Nothing wrong with too big of a radiator. But I'm pretty positive a 3 row would work just fine.
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Jeff 1972 Cheyenne Super SWB 350, Auto, Bucket Seats w/Console, Tach, Factory A/C, P/S ,P/B, Tilt 1998 Chevy 1500 Ext Cab 5.7, Pewter w/blue interior |
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03-08-2013, 11:41 AM
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#3 |
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Cluster King
Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: Engine Cooling
A 3 row should be just fine for your combination. 9 times out of 10, the radiator is not the cause of overheating issues.
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03-08-2013, 11:53 AM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Engine Cooling
4 core radiators are way overhyped overrated and overused// mostly just a severe case of monkey see monkey do
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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03-08-2013, 12:51 PM
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#5 |
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Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,901
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Re: Engine Cooling
It sounds like you're building an engine. A new water pump and thermostat will go a long way to alleviating any concerns about overheating. Your 3-core will be fine, as long as it's in good shape. And make sure you have a shroud that fits properly. I don't think you'll have any problems.
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03-08-2013, 01:31 PM
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#6 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,621
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Re: Engine Cooling
Your 3-row will work just fine. My factory A/C K20 came with a 2-row and it did pretty well, but it ran a bit hot going up the mountain with a cord of green hardwood on a warm day -- didn't overheat, just ran hotter than usual. When the radiator finally failed, I replaced it with a 4-row to help eliminate any chance of running too hot.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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03-08-2013, 09:09 PM
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#7 | |
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Registered User
Join Date: Aug 2012
Location: error 404 location not found
Posts: 816
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Re: Engine Cooling
Quote:
 Posted via Mobile Device
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1995 s10 blazer 4.3 1967 c10 350/350 fleet short 1993 s10 blazer 4.3l 4l60 RIP 6/20/14 2000 mercury sable Thats a how I roll |
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03-08-2013, 09:53 PM
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#8 |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Engine Cooling
As was mentioned, the condition of the radiator and the engine has a lot to do with overheating. I drove a car with a/c and two core here in hot 100º texas weather for many years without overheating. A decent engine with a three core should work fine.
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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03-09-2013, 08:40 AM
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#9 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Engine Cooling
The 3 row should be fine. The main thing is get the shroud on the truck with the fan placed right inside it. The fan should have about 3/4" of the blades outside the shroud and not all the way up inside it. This is for the best air movement and it will stay nice and cool no matter what the outside tempo gets to.
   
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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