Joe, could you please tell me if the fan clutch that Allcoupedup(Brian) is selling, would be NCRS applicable/acceptable for my 1964-365 HP? Thanks in advance.
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Re: Joe Lucia-fan clutch
Jack-----
I don't know what he's selling. Could you please provide a link to his advertisement which, hopefully, includes a photo of the unit.In Appreciation of John Hinckley -
Re: Joe Lucia-fan clutch
Sorry Joe, I should have mentioned Corvetteforum on 09-03-04 at 5:17AM under C1 & C2 parts for sale. ThanksComment
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Re: Joe Lucia-fan clutch
Jack - I am not corvette forum literate, but I finally found your comments on this clutch and the picture of the clutch. This is the Eaton original style midyear clutch, and is one of the correct clutches for the 67 at least, I suspect the 64 uses this same clutch. The bar schweitzer type is the other choice. This clutch would require a Fred Olivia rebuild to be useable, but for the price is a decent core price. There were also short and long versions for BB and SB, the Eaton however, may not have been in both versions like the schweitzer was. The seller doesn't comment on the distance from the flange to the fan mount surface to tell for sure, but the stamping shape of the front is the correct time period specific Eaton front....CraigComment
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Re: Joe Lucia-fan clutch
Jack-----
This could be a correct fan clutch. Actually, there were several fan clutches used in PRODUCTION for 1964 Corvettes. Among these were GM #3814560 and GM #3814137. I believe that the 3814560 was the Sweitzer-manufactured clutch which used the rectangular, bi-metallic plate thermostat and the 3814137 was the Eaton manufactured clutch with the coil thermostat. The one pictured could be the 3814137. Certainly, the clutch pictured is an early design fan clutch and, from what I can see of it, consistent with the configuration of the Eaton fan clutches circa 1964.
However, I can't guarantee that it's the 3814137. Many of these clutches appear identical externally and differ only with respect to internals. So, there's no way to tell them apart. Unfortunately, there was never any part number embossed or otherwise affixed to these clutches. The broadcast code usually present on the face of the clutches is usually long-gone. There may, however, be some additional information stamped on the periphery of the fan clutch hub flange(the part that attaches the clutch to the waterpump). On Sweitzer-manufactured clutches this often includes a broadcast code and date. However, on Eaton-manufactured clutches like this one, the information is often not stamped on the hub periphery.In Appreciation of John HinckleyComment
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Re: Joe Lucia-fan clutch
Thanks Craig, I am in the market for a good core, I just want it to be accurate for my 64.Comment
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Re: Joe Lucia-fan clutch
Thanks Joe and Craig. Any idea what a rebuild will run?Comment
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Re: Joe Lucia-fan clutch
Jack------
I don't know. You will need to contact Fred Oliva to find out.In Appreciation of John HinckleyComment
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Re: Joe Lucia-fan clutch
I did a while back, as I recall, it's $130-150, this was about a year ago.
Here is Fred's website, I didn't check for current prices.....Craig
Fred Olivia Fan Clutch RestorationComment
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Re: Joe Lucia-fan clutch
Thanks Craig!Comment
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Re: Joe Lucia-fan clutch
Joe, Brian responded via email that the measurement from the fan studs' flat to the mounting flange was a little over 1 7/8". A picture is viewable at: Hope this helps, Jack J.Comment
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Re: Joe Lucia-fan clutch
duuuhhhh.... I took another measurement yesterday and determined that my ruler is not broken into 10ths.... the correct measurement is 1.8"
BrianComment
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Attention: Joe Lucia
Joe, would you please check the continuing fan/clutch thread from Monday, Sept.6. Any comments would be greatly appreciated. ThanksComment
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Re: Attention: Joe Lucia
Jack-----
I'm not 100% sure on the shaft length dimension for mid year small blocks. To check on this, for sure, I'd recommend that you get in touch with Fred Oliva. His web-site has been previously mentioned and you can contact him through the web site. If I recall correctly, his e-mail address is foliva@net.gate. However, I'm not positive about this. I'd be interested in whatever you find out.In Appreciation of John HinckleyComment
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Fred wrote most of the Judging Guide text...
and in the mid-year books you should find the fan clutch shaft length nicely defined as 1.8-inches for SB engines and 1.5-inches for BB's. So, not a lot of need to confirm/call Fred; the information is already documented. Only difference will be whether there's a 'step' in the shaft and that varies with clutch supplier: Eaton vs. Schwitzer. Hope this helps.Comment
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