68 Fan

[Dan M.]

Car: 68 327/300 with 4 speed. No A/C Has Power steering

Question: What fan came on this car from the factory? 5 blade or 7???

What part number fan? I searched prior posts but its not clear for 68.

[Roger O.]

Re: 68 Fan

My book shows 3955182 for 68-70 , 7 blade , 17 1/2"..... $27.75
I would have bet $50 it would have been a 5 blade.
Better wait for the more knowledgeable 68 guys before you order !!!

[David L.]

Re: 68 Fan

The 3955182 fan did not exist in 1968.
The fan used on the 1968-1970 Corvettes and 1966-67 Corvettes (427) is GM # 3888366, 17 1/2", 5 blades, 3" bolt circle. It is made by the Hayes-Albion company and has the following stampings: "H", FRONT", and "66". The "66" stamping is the middle 2 digits of the 6-digit Hayes-Albion part number, not the GM part number.

GM # 3888366 was replaced by GM # 3955182 in April 1971 as per Chevrolet Parts History.

[Dan M.]

Re: 68 Fan

Thanks David

[Roger O.]

Re: 68 Fan

Guess I wouldn't have lost my 50 bucks after all.

[Joe L.]

Re: 68 Fan

The 3955182 fan did not exist in 1968.
The fan used on the 1968-1970 Corvettes and 1966-67 Corvettes (427) is GM # 3888366, 17 1/2", 5 blades, 3" bolt circle. It is made by the Hayes-Albion company and has the following stampings: "H", FRONT", and "66". The "66" stamping is the middle 2 digits of the 6-digit Hayes-Albion part number, not the GM part number.

GM # 3888366 was replaced by GM # 3955182 in April 1971 as per Chevrolet Parts History.

David-----


Just one slight correction. While the 3955182 was not used in PRODUCTION for 1968 or earlier, it was used in PRODUCTION for some 1969-70 Corvettes. These included L-46 small blocks with C-60, some or all 1969 big blocks with C-60, and, possibly, some 69-70 L-46 without C-60.

[David L.]

Re: 68 Fan

Joe,
I would consider that additional information, not a correction. The original question was about the fan for a 1968 Corvette, not for 1969 and later Corvette fans.
Dave

[Dan M.]

Re: 68 Fan

Correct. I was looking for info specifically for the 1968 327/300.

Thanks again David!

[Joe L.]

Re: 68 Fan

Joe,
I would consider that additional information, not a correction. The original question was about the fan for a 1968 Corvette, not for 1969 and later Corvette fans.
Dave

David------

The reason that I used the term "slight correction" is that you said:

"The fan used on the 1968-1970 Corvettes and 1966-67 Corvettes (427) is GM # 3888366...".

I interpreted this as your saying the 3888366 was the fan used for all 1968-70 Corvettes which, of course, is not the case. If I interpreted you incorrectly, my apologies and, in that case consider the information I provided as "additional information".

Also, I completely understand that the original question related only to 1968 Corvettes. So, if you had said the GM #3888366 fan was the fan used for all 1968 Corvettes that would have been 100% correct. However, your response included additional information beyond the 1968 model year and that's what I was commenting on.

[David L.]

Re: 68 Fan

Joe,

You are correct. It was a mistake on my part, I apologize. I guess I had a "senior moment".
My statement should have been that the fan used on the 1968-1970 Corvettes (exc. A.C.) and 1966-1967 Corvettes (427) is GM 3888366.

The 1968 Chevrolet Parts Catalog (Oct. 1967) lists the 3789562 fan (18" dia., 5-blade) for 1968 Corvettes w/AC as well as other models.

The 1969 Chevrolet Parts Catalog (Oct. 1968) lists the 3955182 fan (17.5", 7-blade) for 1969 Corvettes (427 w/AC)(exc. 3 X 2).

The 1968 Corvette Assembly Manual lists only the fan-clutch used with the C60 option (AC) as the same fan-clutch used with the L36 option (GM # 3937771). The L88 also uses this same 3937771 fan-clutch. There is no reference to the fan part number.

After doing this minor research it is now not really clear to me which fan was used on the 1968 Corvette w/C60, L36, or L88 options. I had always thought that it was the production fan, GM 3888366, but now I have doubts.

Dave

[Joe L.]

Re: 68 Fan

Joe,

You are correct. It was a mistake on my part, I apologize. I guess I had a "senior moment".
My statement should have been that the fan used on the 1968-1970 Corvettes (exc. A.C.) and 1966-1967 Corvettes (427) is GM 3888366.

The 1968 Chevrolet Parts Catalog (Oct. 1967) lists the 3789562 fan (18" dia., 5-blade) for 1968 Corvettes w/AC as well as other models.

The 1969 Chevrolet Parts Catalog (Oct. 1968) lists the 3955182 fan (17.5", 7-blade) for 1969 Corvettes (427 w/AC)(exc. 3 X 2).

The 1968 Corvette Assembly Manual lists only the fan-clutch used with the C60 option (AC) as the same fan-clutch used with the L36 option (GM # 3937771). The L88 also uses this same 3937771 fan-clutch. There is no reference to the fan part number.

After doing this minor research it is now not really clear to me which fan was used on the 1968 Corvette w/C60, L36, or L88 options. I had always thought that it was the production fan, GM 3888366, but now I have doubts.

Dave

Dave-----

If the 3789562 was used at all for 1968 Corvettes, I think it would have only have occurred for early 1968 Corvettes with A/C. So far, though, I've yet to see a documented case of this fan being originally installed on a 1968 Corvette. Of course, that does not mean that it never happened.

The P&A Catalogs indicate that the 3955182 was used for 1969-70 L-46 with C-60 applications as well as 1969 L-36 with C-60. There are definitely many documented cases of the original use of the 3955182 for 1969-70 L-46 with C-60. If I recall correctly, there are also documented cases of the use of the 3955182 for some non-C-60 L-46 cars.