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10-06-2007, 10:42 AM
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#1 |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
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Fan Clutch Question
After 17x,xxx miles on the Monte and a couple of thousand on the truck, my fan clutch finally gave up. I purchased a new fan clutch from NAPA yesterday and installed it. (It is hard to tell from the picture but the box actually said Made in USA - I didn't know the USA still made anything).
Anyways my question is do I need to do something other than the lock washers because of the slots where it mounts to the water pump? The GM one had holes. The lock washers looked better on that one. On the new one it just doesn't look right. Is anybody running one of these slotted clutches? Does it stay on there ok? I will admit it was a heck of a lot easier getting it on there. I started one bolt and slid the pump on. It sure beats fiddling around with attempting to alight the hole in the clutch, the pulley, and the threads in the water pump.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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10-06-2007, 11:22 AM
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#2 |
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Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Fan Clutch Question
I think if you wanted to have a little more surface for the lock washer you could use a flat washer, or use a lock nut with a flat washer.
what makes the clutch fan center? That is the first thing that concerned me. s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. 
Last edited by Sport/Truck; 10-06-2007 at 11:23 AM. |
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10-06-2007, 12:03 PM
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#3 | |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
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Re: Fan Clutch Question
Quote:
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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10-06-2007, 12:13 PM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Fan Clutch Question
are you sure the part was made in usa and not just the box?
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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10-06-2007, 12:20 PM
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#5 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Fan Clutch Question
Mine works fine but I used a thick flat washer under the lock washer.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71  Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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10-06-2007, 12:46 PM
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#6 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Fan Clutch Question
the slotted ones are fine. They do that so one part will fit both long water pumps, and short water pumps. (bolt pattern isn't the same)
The center nipple locates it, and keeps it from falling off center, the bolts just secure it. Your engine can't rev enough to make it matter. |
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