83 Fan Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BusinessProfessor · 05-12-2009, 08:45 PM

I am starting to clean up the engine compartment in my 83 Dump. I noticed that the GM crate 350 in the bay has a three bladed fan. Is this correct, normal, or just strange?

**old Rusty C10** · 05-12-2009, 09:44 PM

i dont think ive ever had one of them its always been a clutch fan with like five blades on it

Turbo85GMC · 05-13-2009, 06:54 AM

My 305 has a 3-blade fan with a thermal clutch. Don't know if it's original or not, but previous owner didn't do much of anything to the truck.

kevinr1970 · 05-15-2009, 12:09 AM

I *THINK* 5-blade fans were used in trucks with AC and maybe with HD/tow packages.
My '87 crew w/o AC has a 3-blade fan.

BusinessProfessor · 05-15-2009, 08:53 PM

Thanks for the replies!!!! No air in mine, but it has the heavy duty tow package.

05-12-2009, 08:45 PM	#1
BusinessProfessor Registered User Join Date: Jan 2009 Location: Staten Island, NY Posts: 109	83 Fan Question I am starting to clean up the engine compartment in my 83 Dump. I noticed that the GM crate 350 in the bay has a three bladed fan. Is this correct, normal, or just strange? __________________

05-12-2009, 09:44 PM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,277	Re: 83 Fan Question i dont think ive ever had one of them its always been a clutch fan with like five blades on it __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

05-13-2009, 06:54 AM	#3
Turbo85GMC Registered User Join Date: Apr 2005 Location: Medford, MA Posts: 307	Re: 83 Fan Question My 305 has a 3-blade fan with a thermal clutch. Don't know if it's original or not, but previous owner didn't do much of anything to the truck. __________________ '85 GMC 1500 "Friends don't let friends drive stock!"

05-15-2009, 12:09 AM	#4
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Re: 83 Fan Question I THINK 5-blade fans were used in trucks with AC and maybe with HD/tow packages. My '87 crew w/o AC has a 3-blade fan. __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold)

05-15-2009, 08:53 PM	#5
BusinessProfessor Registered User Join Date: Jan 2009 Location: Staten Island, NY Posts: 109	Re: 83 Fan Question Thanks for the replies!!!! No air in mine, but it has the heavy duty tow package. __________________



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