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#1
09-28-2018, 06:26 PM
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Torque Spec - 400 - Fan Assembly to Water Pump
Hi Guys, the 4 nuts that attach the fan to the studs on water pump. I can't find the spec. Anyone point this out in the shop manual. Thanks!
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#2
09-28-2018, 10:41 PM
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Unlike engine internals and other sensitive areas, I don't feel like this is something which warrants being finicky with torque specs. Just snug it down appropriately. You can use threadlock if you are paranoid.
__________________
 1966 Pontiac GTO (restoration thread) 1998 BMW 328is (track rat) 2023 Subaru Crosstrek Limited (daily) View my photos: Caught in the Wild |
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#3
09-28-2018, 10:46 PM
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thx
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#4
09-28-2018, 10:58 PM
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What kind of setup has studs on the pump flange?All of mine use fine thread bolts?Tom
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#5
10-03-2018, 12:57 AM
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Quote:
To answer the OP's questions, just tighten them down without going gorilla strength on the nuts. I use lock washers between the nuts and the fan hub.
__________________
'70 GP Model J 462 Butler ported 87cc Edelbrock D-ports RPM intake with Holley Sniper 2 CompCams 236/242 hydraulic roller Tribal Tubes tri-y headers TH400 13" Continental "Jim Hand Special" 3.50 9" CurrieTrac, 245/45-18 Front, 275/40-18 Rear |
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#6
10-03-2018, 01:01 AM
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EGAD! I just read my '70 shop manual which references "Bolt-Fan and Pulley to Water Pump" 20 lb-ft. That being said, every one of my Pontiacs in the past has had a stud and nut setup on the fan mount. How long of a bolt do you use?
__________________
'70 GP Model J 462 Butler ported 87cc Edelbrock D-ports RPM intake with Holley Sniper 2 CompCams 236/242 hydraulic roller Tribal Tubes tri-y headers TH400 13" Continental "Jim Hand Special" 3.50 9" CurrieTrac, 245/45-18 Front, 275/40-18 Rear |
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#7
10-03-2018, 01:08 AM
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And I see Ames sells both bolt kits and stud & nut kits. They say "check your original before ordering."
__________________
'70 GP Model J 462 Butler ported 87cc Edelbrock D-ports RPM intake with Holley Sniper 2 CompCams 236/242 hydraulic roller Tribal Tubes tri-y headers TH400 13" Continental "Jim Hand Special" 3.50 9" CurrieTrac, 245/45-18 Front, 275/40-18 Rear |
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#8
10-03-2018, 09:40 AM
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Thanks!
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#9
10-03-2018, 10:14 AM
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Is this a clutch fan application!I have never used a clutch fan.All of mine use a fan blade to a spacer with bolts holding them to the water pump flange.Tom
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#10
10-03-2018, 11:46 AM
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I pull on the wrench until my wrist says, "That's plenty tight"...………….
__________________
Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated    
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#11
11-09-2018, 11:44 PM
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Quote:
77-78 TA clutch fans with studs are OEM. |
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#12
11-10-2018, 12:12 AM
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Got it.Tom
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#13
11-10-2018, 09:57 PM
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My 64 uses bolts
__________________
468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
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#14
03-25-2019, 09:10 PM
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Make sure your split lock washer end is not in the slot opening of your clutch fan. It should be located on solid material.
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