Author Topic: 68 Z clutch fan  (Read 9732 times)

68Zproject

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68 Z clutch fan
« on: May 20, 2008, 12:41:12 AM »
This is kind of a two-parter.
1)  I bought a 68 GM fan clutch a while back and put the aftermarket fan I had on that.  The fan was kind of universal, so it fit this clutch.  I didn't really pay attention but I found that the fan clutch spacing, on the fan clutch, was only 3".  Does someone make a repo or does GM have a 3 1/4" fan clutch?
#2)  I finally found a fan that is an 18" 5 blade fan like the original Z28 fan with a 3 1/4" fan clutch spacing.  But it has 5 rivets instead of 4.  What could this be for?
68Z28

fireZ

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Re: 68 Z clutch fan
« Reply #1 on: May 20, 2008, 12:01:05 PM »
I have had one of those fans also and was told it was a Corvette fan blade. I have looked for 5 years for the correct four rivet fan for my 68 Z but I am not in the position to pay 2000 for the correct set-up. Mine was disguarded years ago for a 7 blade flex fan. I will keep hunting and for now use the 5 rivet blade.
1968 Z28 LA Built
LIC # RPO Z28

JohnZ

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Re: 68 Z clutch fan
« Reply #2 on: May 20, 2008, 02:43:22 PM »
1960-1970 Corvettes used the clutch with the 3" fan attaching bolt circle; it changed to 3-1/4" in 1971. Eaton still makes new clutches in both the 3" and 3-1/4" bolt circle versions - the 3" version is GM #3916141, don't have the part number handy for the 3-1/4".
'69 Z/28
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1968RSZ28

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Re: 68 Z clutch fan
« Reply #3 on: May 20, 2008, 08:21:00 PM »
I have looked for 5 years for the correct four rivet fan for my 68 Z but I am not in the position to pay 2000 for the correct set-up. Mine was disguarded years ago for a 7 blade flex fan. I will keep hunting and for now use the 5 rivet blade.

$2000.00 is cheap in today's market.  Here's an original '68 Z/28 fan and clutch that recently sold on Ebay for $4218.73...

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=140228611059&ssPageName=STRK:MEWA:IT&ih=004

That's more than the whole car cost new!!     ;D

Here's an original '67 Z/28 fan clutch (dated 2-17-67) that recently sold on Ebay for $3419.00...

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=260238241703&ssPageName=STRK:MEWA:IT&ih=016

Congratulations Charley!     :)

Paul

fireZ

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Re: 68 Z clutch fan
« Reply #4 on: May 20, 2008, 08:29:45 PM »
Well I can forget about ever getting the correct fan for my car unless I come across one at a swap meet and the vendor does not know what it is. I will have to take a copy of that Ebay ad and shows the guys that are kind enough to point out I have the wrong fan on my otherwise completely original Z . I cannot blame the guys that have them for getting as much as they can for them. It guys like me that took our originals off years ago that I can blame for the prices.
1968 Z28 LA Built
LIC # RPO Z28

1968RSZ28

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Re: 68 Z clutch fan
« Reply #5 on: May 20, 2008, 08:40:20 PM »
Tell me about it, I bet I could part my car out for more than I could sell it whole!!     ;)

Paul

fireZ

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Re: 68 Z clutch fan
« Reply #6 on: May 20, 2008, 09:09:09 PM »
Oh well I guess that we can both be happy knowing we do own original 68 Z28s even if we are missing our 4 rivet fans.
1968 Z28 LA Built
LIC # RPO Z28

1968RSZ28

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Re: 68 Z clutch fan
« Reply #7 on: May 20, 2008, 09:36:29 PM »
Oh well I guess that we can both be happy knowing we do own original 68 Z28s even if we are missing our 4 rivet fans.

I still have the original fan on my '68 Z/28!!     :)

I probably should chain the hood down!!     :(

Paul

fireZ

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Re: 68 Z clutch fan
« Reply #8 on: May 20, 2008, 11:18:44 PM »
Chain it down and put a dog on the chain. See Ya Paul
1968 Z28 LA Built
LIC # RPO Z28

68Zproject

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Re: 68 Z clutch fan
« Reply #9 on: May 21, 2008, 12:59:13 AM »
What's your address Paul?
I will get a picture.  The fan I have says 68 H and FRONT on it just like the 4 rivet ones.
68Z28

68Zproject

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Re: 68 Z clutch fan
« Reply #10 on: May 21, 2008, 04:59:54 AM »
1960-1970 Corvettes used the clutch with the 3" fan attaching bolt circle; it changed to 3-1/4" in 1971. Eaton still makes new clutches in both the 3" and 3-1/4" bolt circle versions - the 3" version is GM #3916141, don't have the part number handy for the 3-1/4".
Do you know what these 3 1/4" vette fans said on them?   If you come across the 3 1/4 fan clutch part # I would be very thankful.  No hurry.
68Z28

1968RSZ28

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Re: 68 Z clutch fan
« Reply #11 on: May 21, 2008, 07:04:28 AM »
What's your address Paul?

 ::)

The fan I have says 68 H and FRONT on it just like the 4 rivet ones.

I just looked at my fan.  I see the "H" and "FRONT" you mentioned stamped on the front side.  There is also a "W" stamped on the back of the fan.  I don't see the "68" on my fan unless it hidden under the fan clutch.     :P

Paul

Jerry@CHP

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Re: 68 Z clutch fan
« Reply #12 on: May 21, 2008, 11:26:05 AM »
These fan blades are not date stamped, many of the fan clutches are though.

Jerry

1968RSZ28

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Re: 68 Z clutch fan
« Reply #13 on: May 21, 2008, 04:53:45 PM »
These fan blades are not date stamped.

Thanks Jerry!  That's why I couldn't find the "68" stamp he mentioned, it's not there!  You saved me the trouble of unbolting the fan clutch to check.     :)

Paul

68Zproject

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Re: 68 Z clutch fan
« Reply #14 on: May 23, 2008, 03:03:28 PM »
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68Z28