7 Blade Fans Application And Value

**427.060** · #1 07-22-2022, 02:00 AM

I have been digging through some of the parts I have and found two 7 blade fans. I am trying to find out what they are for and what they are worth. The first is numbered 3931002 and dated F68. The second is 3937779 and dated G68. Both have clutches but I'm not sure if they are the correct ones.
Thank you, James

Rsconv68 · #2 07-22-2022, 03:24 AM

I found this on a Corvette forum. Hope it helps.

It's a big block fan & clutch, but not for a Corvette. This is what Joe Lucia (heap big Corvette parts authority) says about that fan on the NCRS site:
"The GM #3931002 fan blade assembly was never used on a Corvette. It is a 7 blade fan originally used on 1968 full size Chevrolet passenger cars with air conditioning and 396 or 427 engines. It was also used on some full size Buicks and Cadillacs of the period. GM #3931002 was discontinued from SERVICE in October, 1986."

**427.060** · #3 07-24-2022, 01:34 AM

Pictures added. The red one is the 3937779 one.

**dvss1** · #4 07-24-2022, 02:39 AM

The 779 fan was used on early built 69 cars and pickup trucks with air conditioning. I believe up to November 68.

**X66 714** · #5 07-24-2022, 04:01 AM

Here's some 1st gen Camaro info on fans & clutches....Joe

http://www.camaros.org/coolingsystems.shtml#fan

**427.060** · #6 07-24-2022, 05:35 AM

That info helps. Thanks for the responses.

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X66 714 (07-24-2022)