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Cooling Systems, Radiators, Fans / A/C Cooling Systems, Radiators, Fans / A/C


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  #1  
Old 11-03-2018, 03:04 PM
Johnnyb Johnnyb is offline
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Default Help!

Hey,
I have a 64 C10 that I did an engine swap. Put in a new 350 SB, Champion 4 core radiator, Flex fan with long water pump. 180 deg thermostat.
Here's my issue, The truck takes forever to warm up enough to open the thermostat and during this time it starts puking coolant from the overflow line. When the truck warms up enough to open the therm it heats up past 180 deg to 200.
I replaced the therm thinking it was stuck open but it's still doing the same thing.
Any ideas? Help me before I pull whats left of my hair out.
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  #2  
Old 11-03-2018, 03:08 PM
cfjfisher cfjfisher is offline
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there are several possibilities No fan shroud bottom hose collapsing is it a serpentine set up? Maybe water pump for reverse flow
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  #3  
Old 11-03-2018, 03:37 PM
Johnnyb Johnnyb is offline
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I do not have a shroud. It doesn’t appear that the bottom hose is collapsing. And I have never heard of a reverse flow pump. Could I have put in the incorrect pump?
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  #4  
Old 11-03-2018, 03:51 PM
Johnnyb Johnnyb is offline
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And no serpentine setup
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  #5  
Old 11-04-2018, 10:02 AM
cfjfisher cfjfisher is offline
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I'd change the bottom hose to one with a spring in it, and see what happens. The later model Chevys with serpentine belts the water pumps run backwards to the older ones. Just one more thing to think about.
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  #6  
Old 11-04-2018, 08:33 PM
Johnnyb Johnnyb is offline
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I also deleted the heater. I wonder if that has anything to do with it?
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  #7  
Old 11-04-2018, 08:48 PM
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406Rich 406Rich is offline
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No on the heater, you say this is a new engine, do you have the paper work with the engine part number, it will tell you if this is a reverse water pump, or did you buy the water pump separate ? One way to tell for sure remove water pump, looking at the front it should rotate clockwise, use a flashlight and look at the impeller vanes, the cupping should be facing clockwise...
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`37 Ford Coupe, 406/350/324 posi
`64 C10, 350/350/373 posi
`68 Dodge Dart 370/904/325 sure grip
`69 Camaro RS/SS 350/350/307

"The difference between stupidity and genius is genius has its limits"...Albert Einstein

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  #8  
Old 11-05-2018, 09:10 AM
Johnnyb Johnnyb is offline
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I built the engine myself. Its out of a 72 Camaro. The water pump is for that engine and was bought from either Jegs or Summit. I will find the paperwork for the water pump and check the part number and see what it says.
Thanks for the ideas guys.
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  #9  
Old 11-06-2018, 07:48 AM
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406Rich 406Rich is offline
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To much advance will also have a big impact on over heating, you say you have no shroud, What is the distance from the fan to radiator? Vacuum leaks...?
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`37 Ford Coupe, 406/350/324 posi
`64 C10, 350/350/373 posi
`68 Dodge Dart 370/904/325 sure grip
`69 Camaro RS/SS 350/350/307

"The difference between stupidity and genius is genius has its limits"...Albert Einstein

“Life is not a journey to the grave with the intention of arriving safely in one pretty and well preserved piece, but to skid across the line broadside, thoroughly used up, worn out, leaking oil, shouting GERONIMO!”
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  #10  
Old 11-08-2018, 12:03 AM
Johnnyb Johnnyb is offline
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I am about 12 deg before TDC. No vacuum leaks and the fan is about 3-4” from the radiator.
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