Electric fan install

[Blackwater]

That fits the standard radiator. The 454 uses the big radiator. $500 is a lot of cash...

https://www.amazon.com/Flex-lite-290-Universal-Electric/dp/B000CNHFUI

try this one then.

I installed a aluminum 3 core radiator with shroud and 16" fans (5,000CFM total) on my 89.

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That looks nice.

 

[BigPete1954*]

wow! First Class!

 

[redchevy914x4]

I installed a aluminum 3 core radiator with shroud and 16" fans (5,000CFM total) on my 89.

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How did you install the newer style a/c compressor on your truck?

 

[rvc9285]

How did you install the newer style a/c compressor on your truck?

I bought the AC Conversion Kit from Classic Industries.
http://www.classicindustries.com/shop/1989/truck/parts/ac-heater/ac-systems/

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[redchevy914x4]

Awesome. Is it a straight replacement without much fabrication? Does it seem to work good? I only ask because my 91 is due for an a/c compressor and would rather update if possible.

 

[Jeffdfree]

Check out this Engine Masters video on fans, they compare clutch, flex, and rigid fans on a dyno. The flex fan sucked like 14hp from the motor.

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[someotherguy]

Yeah flex fan is a no-no...engaged full time, even when you don't need it.

OEM style rigid fans predate GMT400's by practically decades so they're not even a factor here.

Richard

 

[Blackwater]

Well I finally converted to Electric fans. But also upgraded the radiator to a 34 inch 2 core and used the fexalight 294 fans. the upgraded radiator has engine and tranny lines which are needed for the new engine. I do have a NV4500 manual but if I put a nipple on each PTO port and get a oil pump and screw on oil filter and bam. I'm also doing this with my diff but a local small cooler since I have a finned aluminum diff cover.