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05-20-2024, 10:43 PM
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#1 |
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Registered User
Join Date: Oct 2020
Location: ca
Posts: 84
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Re: overheating at idle
I got the new radiator shroud today. I was unable to install it. I could not get the shroud over the water pump. I took the fan blades and clutch off but still couldnÂ’t get it over the pump. Am I supposed to take the radiator out to get the shroud to install?
I think that the 4x4 shroud may not work. From the radiator to the back of the fan blades is roughly 7 and 1/2 inches. The shroud is 9 inches deep. This means if some how I get the shroud on the fan blades will be inside the shroud by almost 2 inches. I have pulleys and what not roughly 9 inches from the radiator so the shroud will probably interfere with that. I can trim the shroud down to about 7 inches in depth but it looks like the same shape as the old shroud. Im worried if I trim the shroud it still is not going to fit the fan in the center of the shroud. The only thing I can think of is that the PO converted the truck from manual to automatic. Maybe this pushed the engine forward where the proper shroud is to big? Do u trim the shroud and hope for the best? All though I’m pretty sure it’s not going to work? Or do I just get a dual electric fan set up and call it good? https://ibb.co/zSmrfJx https://ibb.co/3Wwq055 https://ibb.co/Fh5414n Last edited by vardenafil; 05-20-2024 at 10:58 PM. |
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05-21-2024, 09:03 AM
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#2 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,266
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Re: overheating at idle
No expert but wernt the 4x4 truck engines mounted back further than the 2wd trucks . I know my 85 is as there is a huge space between the rad and the water pump. But I may be wrong .
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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05-21-2024, 09:07 AM
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#3 |
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All stock and staying that way
 
Join Date: Jul 2003
Location: Elkland, PA
Posts: 1,384
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Re: overheating at idle
Yes, K series engines were set back further than C models.
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1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress...  1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...  2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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05-21-2024, 09:07 AM
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#4 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,266
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Re: overheating at idle
Another thought is are you sure the water pump is correct . If someone transplanted a motor from another truck or car you may be running a short pump in a system designed for a long pump .
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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05-21-2024, 09:13 AM
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#5 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,266
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Re: overheating at idle
You could try something like this to get the fan blades closer . I wouldn’t run it for ever since you are moving the weight out further and it will wear out the pump that much faster . But it may or may not confirm the fan location is the problem
__________________
Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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