Fan/fan clutch for 71 C10 with 350 HO with serpentine belts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jtinpdx · 02-01-2017, 07:03 PM

Hi All,
Just had a GMC shop install the 350 HO turnkey engine in my 71 C10. They put in a new aluminum radiator but ended up installing a direct drive fan. They say they couldn't find a fan with a clutch that spun the reverse direction and had enough clearance.

Does anyone have this setup? Any thoughts on parts to use?

Thanks,
Jeff

**RodnRudy** · 02-01-2017, 07:19 PM

You're probably going to have to use an electric fan set up on your aluminum radiator. A dual fan set up with shroud will be ideal for cooling your engine.

MARKDTN · 02-02-2017, 05:17 PM

I don't know why a fan and clutch from a 87-95 wouldn't work. A similar van may be even smaller. Or a S10 4.3 style with screw-on fan (but you would have to change the water pump) is not as long. Do you have any photos?

**cdub2010** · 02-03-2017, 12:24 AM

I have a serpentine setup out of a 90 suburban with a 350. I couldnt use the stock one as it was to big for the shroud. I went with this one, from summit racing. Flex-a-lite Reverse Rotation Clutch Fans 5917, Im not sure how well it will work as I have only drove the truck 20 miles or so. I didnt want one without a clutch. Might be an option.

02-01-2017, 07:03 PM	#1
jtinpdx Registered User Join Date: Aug 2014 Location: Portland, OR Posts: 132	Fan/fan clutch for 71 C10 with 350 HO with serpentine belts Hi All, Just had a GMC shop install the 350 HO turnkey engine in my 71 C10. They put in a new aluminum radiator but ended up installing a direct drive fan. They say they couldn't find a fan with a clutch that spun the reverse direction and had enough clearance. Does anyone have this setup? Any thoughts on parts to use? Thanks, Jeff

02-01-2017, 07:19 PM	#2
RodnRudy Senior Member Join Date: Oct 2014 Location: New Palestine In Posts: 932	Re: Fan/fan clutch for 71 C10 with 350 HO with serpentine belts You're probably going to have to use an electric fan set up on your aluminum radiator. A dual fan set up with shroud will be ideal for cooling your engine. __________________ Phil "Money is only a tool to create and achieve what you want most in life" PayPal: rodnrudy@comcast.net

02-02-2017, 05:17 PM	#3
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,167	Re: Fan/fan clutch for 71 C10 with 350 HO with serpentine belts I don't know why a fan and clutch from a 87-95 wouldn't work. A similar van may be even smaller. Or a S10 4.3 style with screw-on fan (but you would have to change the water pump) is not as long. Do you have any photos? __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project

02-03-2017, 12:24 AM	#4
cdub2010 Senior Member Join Date: Apr 2014 Location: detroit mi Posts: 209	Re: Fan/fan clutch for 71 C10 with 350 HO with serpentine belts I have a serpentine setup out of a 90 suburban with a 350. I couldnt use the stock one as it was to big for the shroud. I went with this one, from summit racing. Flex-a-lite Reverse Rotation Clutch Fans 5917, Im not sure how well it will work as I have only drove the truck 20 miles or so. I didnt want one without a clutch. Might be an option.



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