1962 fan clutch and fan blade

[Roger Z.]

Is there an easy and fast way to tell a 62 clutch and fan blade from others?
It seems most in the early to late 60's look very similar.

I know the blade has a certain diameter,blade configuration along with the rivets.
And what about the clutch itself?
Is there a publication out there that would show exactly what they look like?
Thank you
Roger member 13939

[David L.]

Re: 1962 fan clutch and fan blade

The GM part number for the 60-67 Corvette fan is 3770529 but theses fans are not all identical. The 1964 and older version has "dome" head rivets while the the 1965-1967 version has "flat" head rivets.

17 1/8" dia., 5 blades with 5 rivets/blade, 3" bolt circle, 2 3/8" hub hole, 1 5/8" pitch, 5.68" blade length.

I do not know that the exact stampings are on the 1962 version of the 3770529 fan.

I do have a couple of 18" fans (GM # 3749576) that were original equipment on 1958-1963 Chevrolet passenger cars w/AC which also have the "dome" head rivets. These fan were made by Hayes-Albion and usually have the letter "H", possibly the word "FRONT", and possibly the letter "W" on the back side but I would have to double check.

My original 1966 fan with "flat" head rivets has just the letter "H" and the letter "W" on the back side.

Enclosed is a photo of a 1960-1962 fan & clutch. I don't remember where I got the photo.

Dave

[Dennis C.]

Re: 1962 fan clutch and fan blade

Is there a publication out there that would show exactly what they look like?
Thank you
Roger member 13939

Roger,

There is some information and photos in the 61-62 Judging Guide.

Dennis

[Terry D.]

Re: 1962 fan clutch and fan blade

Roger Agree with Dennis, look in the Judging Manual, there are different clutches both in 61 and 62

[Joe M.]

Re: 1962 fan clutch and fan blade

The 62 fan clutch will have a capital C stamped on the back of one of the rectangular bosses. The date code was stamped on the front, but doubtful you will see any trace of it. Eaton supposedly used an acid-based ink that slightly etched the steel face plate, but I seldom see any evidence of etching.

The photo in the post above would be accurate for 1961/62, but does not have the bump on the face that is indicative of 1960 fan clutches.

[Terry D.]

Re: 1962 fan clutch and fan blade

Roger as stated previously, check the judging manual, the picture posted would be correct for a late 61 and early 62 fan clutch. However the judging manual does give any numbers as to what is considered early or late. The manual does have some good pictures of all three.

[Robert K.]

Re: 1962 fan clutch and fan blade

I believe the 60-61 clutch had a little keeper spring in the center. Late 62 and on had what they call a lumpy face, not smooth as pictured above. On my mid year 62, the clutch broke about 25 years ago and I replaced it in Virginia Beach while driving the Vette on vacation. I just fished it out of the junk pile it it has a lumpy face. That's what's going back on my car, after a rebuild.

[Larry C.]

Re: 1962 fan clutch and fan blade

Robert,

'62 serial number 13078, build date circa 6-22-62, has the fan clutch as pictured above, and having seen a ton of '62s over the past 45 years, or so, I have never seen an original '62 with the lumpy clutch. But, who knows?

Larry

[Larry C.]

Re: 1962 fan clutch and fan blade

And, by the way, I have owned the above '62 since April 1965 when it was still like new, and have never parted with it over the past 47 years.

Larry

[John F.]

Re: 1962 fan clutch and fan blade

Here is a picture from a 62 #10975. It's the best I could do while on the car.

[Charlie P.]

Re: 1962 fan clutch and fan blade

Here is a pic of a 1962 fan clutch dated A19C- Jan 19, 1962A19C fan clutch-2.jpg

[Mike E.]

Re: 1962 fan clutch and fan blade

Larry,
I agree with you on this one! I have seen several 62's with lumpy clutches, but they were known to be non-original to the car: pulled from a bone yard or swap meet. My 62 #14445 is a very original car, and has the flat face fan. An original owner 62 in the 142xx range has the flat face fan, too. I've questioned the article in the Restorer ever since it came out about lumpy faces on 62's.

Robert,

'62 serial number 13078, build date circa 6-22-62, has the fan clutch as pictured above, and having seen a ton of '62s over the past 45 years, or so, I have never seen an original '62 with the lumpy clutch. But, who knows?

Larry

[Charlie P.]

Re: 1962 fan clutch and fan blade

I should add that the pic I posted is that of a clutch I bought to replace the one on my car (which is not the flate face style either). I searched for it based on the JG description for a late '62. The date code is about six months ahead of my circa June 7 car. I planned to get rid of the date since it is apparently not commonly seen anyway. Now I may rethink use of this one. It has the stamped "C" on the back side, by the way.

Charlie

[David L.]

Re: 1962 fan clutch and fan blade

A while back there was a rebuilt 62 fan clutch that was dated "I 14 B" (Sept. 14, 1961) posted in the thread below. The last letter was the year (A = 1960, B = 1961, C = 1962, .......................J = 1969).

In 1970 the Eaton company reused the letter "A" for 1970. A 1970 Z28 fan clutch made on January 20, 1970, was stamped "EATON", "CV", and "A 20 A".

Dave

https://www.forums.ncrs.org/showthre...ghlight=clutch

[John F.]

Re: 1962 fan clutch and fan blade

Here is the best pic I could get of my other 62 #00029. I believe to be original. Per original owner it had never been replaced.