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-   -   Clutch Fan Install getting mucho frustrated (https://67-72chevytrucks.com/vboard/showthread.php?t=855520)

Oregon 1967 GMC 11-09-2024 10:18 AM

Clutch Fan Install getting mucho frustrated
 
2 Attachment(s)
Could someone break it down the assembly order for this? I'm thinking I need studs because I cannot get the bolts in from the fan side o from the water pump.

Steeveedee 11-09-2024 10:27 AM

Re: Clutch Fan Install getting mucho frustrated
 
Save yourself mucho frustration and get the studs. It's 10 times easier.

Stocker 11-09-2024 01:23 PM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Steeveedee (Post 9352399)
Save yourself mucho frustration and get the studs. It's 10 times easier.

This. The last time I changed my fan clutch, I didn't know about the studs. Fiddly but I eventually got it. Told myself if I ever do it again, I'll get the studs.

leddzepp 11-09-2024 01:49 PM

Re: Clutch Fan Install getting mucho frustrated
 
I use studs on every vehicle I own, makes life way easier.

Oregon 1967 GMC 11-09-2024 02:37 PM

Re: Clutch Fan Install getting mucho frustrated
 
Copy that. Thank you I'm getting studs.

chewychevy67 11-09-2024 03:01 PM

Re: Clutch Fan Install getting mucho frustrated
 
I used studs on my 67 327 as well. Much easier to line up the clutch under the shroud

54blackhornet 11-09-2024 03:17 PM

Re: Clutch Fan Install getting mucho frustrated
 
Napa has a kit with everything you need.

Dashman 11-09-2024 07:01 PM

Re: Clutch Fan Install getting mucho frustrated
 
You're not putting that spacer back, right? I believe those are only for flex fans replacing thermo clutch fans.

Stocker 11-09-2024 08:44 PM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Dashman (Post 9352453)
You're not putting that spacer back, right? I believe those are only for flex fans replacing thermo clutch fans.

Good point, that spacer should not be needed. The real test is whether the fan blades are roughly half-in, half-out of the shroud opening.

Oregon 1967 GMC 11-10-2024 03:12 AM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Dashman (Post 9352453)
You're not putting that spacer back, right? I believe those are only for flex fans replacing thermo clutch fans.

I do need that spacer to reach half in half out position in shroud. Hope i can find studs that long. I'll look at NAPa because O O'Reilly only had two inches

Oregon 1967 GMC 11-10-2024 08:51 AM

Re: Clutch Fan Install getting mucho frustrated
 
1 Attachment(s)
I ordered this from Summit. Hope it works

Oregon 1967 GMC 11-17-2024 12:20 PM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Oregon 1967 GMC (Post 9352535)
I ordered this from Summit. Hope it works

It didn't work. Going to augment shroud

Stocker 11-17-2024 01:35 PM

Re: Clutch Fan Install getting mucho frustrated
 
I couldn't tell by the pic, and don't have the particulars off the top of my head.... But is there a chance you have a short water pump, and a long water pump might put everything right?

EDIT: This might help:
https://67-72chevytrucks.com/vboard/...1&d=1632269940

Steeveedee 11-17-2024 02:45 PM

Re: Clutch Fan Install getting mucho frustrated
 
^ Interesting pic. My '70 BBC has a short water pump.

Stocker 11-17-2024 04:14 PM

Re: Clutch Fan Install getting mucho frustrated
 
Well, the OP's '67 should have a short original WP -- but over the years, things can change.

Steeveedee 11-17-2024 04:59 PM

Re: Clutch Fan Install getting mucho frustrated
 
What's worse is that my fan clutch is about 1/2" from the radiator. That's the severe duty clutch, though, which has fins that stick out pretty far past the fan mounting flange. I ended up just making a shroud from a piece of aluminum strap.

We haven't seen the OP's shroud. Maybe the deeper 4WD shroud would work?

Palf70Step 11-17-2024 08:24 PM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Steeveedee (Post 9352399)
Save yourself mucho frustration and get the studs. It's 10 times easier.

I agree. I've tried both ways and studs are definitely the way to go.

Stanco 11-18-2024 01:59 AM

Re: Clutch Fan Install getting mucho frustrated
 
If you do a search for 5/16 studs 1.25 inches long you will find several with the fine thread end longer than the course thread end. This is not ideal for a fan clutch instillation.

AMK has the correct hard to find studs available but has a minimum order of $30.

Along with the studs I also bought some correct water pump, alternator, and power steering pump bolts to replace some ugly hardware store bolts.

https://www.amkproducts.com/bulk-fas...oduct_ID=11003

Oregon 1967 GMC 11-18-2024 07:57 AM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Stocker (Post 9353917)
I couldn't tell by the pic, and don't have the particulars off the top of my head.... But is there a chance you have a short water pump, and a long water pump might put everything right?

EDIT: This might help:
https://67-72chevytrucks.com/vboard/...1&d=1632269940

I have a long water pump.

72c20customcamper 11-18-2024 10:35 AM

Re: Clutch Fan Install getting mucho frustrated
 
3 Attachment(s)
Quote:

Originally Posted by Oregon 1967 GMC (Post 9354025)
I have a long water pump.

Quote:

Originally Posted by Oregon 1967 GMC (Post 9352521)
I do need that spacer to reach half in half out position in shroud. Hope i can find studs that long. I'll look at NAPa because O O'Reilly only had two inches




Something is strange then . The long water pump would push the fan further into the shroud . I have this problem on my 72 it had a later model engine with a long water pump with the associated accessories brackets. The fan is not half in and out it’s completely inside the shroud . I’ll post a pick later have to go out to the truck

Edit for pictures:
It’s not optimal but the truck has never overheated even pulling the trailer .

1970cstblazer 11-18-2024 11:06 AM

Re: Clutch Fan Install getting mucho frustrated
 
https://www.ebay.com/itm/27644031344...Bk9SR9La9fznZA

https://i.ebayimg.com/images/g/hHoAA...7/s-l1600.webp

Stocker 11-18-2024 02:27 PM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Steeveedee (Post 9353936)
We haven't seen the OP's shroud. Maybe the deeper 4WD shroud would work?

Agreed, pics would definitely help, and a deeper 4x4 shroud might be the answer.

FWIW, the OEM shroud on my K20 is right at 9" deep front-to-back.

Oregon 1967 GMC 11-18-2024 02:58 PM

Re: Clutch Fan Install getting mucho frustrated
 
It may be because my 400 sbc is back against the firewall. My plug wires literally rub against the firewall. Not sure maybe because I used the same motor mounts that my straight six 250 had.

un4gvn! 11-18-2024 03:04 PM

Re: Clutch Fan Install getting mucho frustrated
 
Carburetor studs work also and they come in different lengths. Some come useing hex key to install.

Classic Bowties 11-18-2024 03:20 PM

Re: Clutch Fan Install getting mucho frustrated
 
Quote:

Originally Posted by Oregon 1967 GMC (Post 9354088)
It may be because my 400 sbc is back against the firewall. My plug wires literally rub against the firewall. Not sure maybe because I used the same motor mounts that my straight six 250 had.

:agree:

^ ^ ^ After ten days, 800 views and 25 post in... With that above added info, you have answered/solved the root of the mucho clutch fan issues that you are having on your own. Mel :chevy:


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