I'm looking for a fan clutch. I was searching used, but after trying 3 different ones that don't fit, I may need to order one.
My current fan clutch configuration is:
5/8" centering hole
2 1/8" (wide ctr to ctr) on water pump
3 1/4" (wide ctr to ctr) on fan blade (7 blade)

Thanks.

I had the same problem with mine.
All the parts stores did not have the correct one listed.
The bolt hole diameter was off.
The car was originally a 327 2 bbl A/C car with a 7 blade fan.
I ended up downloading the hayden pdf catalog and matching it from their specs.
I think it ended up as the 2710 p/n.
Don

My current fan clutch configuration is:
5/8" centering hole
2 1/8" (wide ctr to ctr) on water pump
3 1/4" (wide ctr to ctr) on fan blade (7 blade)

Sounds like the heavy duty one that was used on the L-78 and Z-28 cars.

Sorry I didn't include these details. I was concentrating on posting my dimensions and forgot to mention :o It is a SB 350.
I have a friend that has a few clutchs and spacer from an early corvette, none of them fit my set up.


Don, where did you end up getting it?

I got mine at Kragen, most parts stores carry Hayden Fan Clutches.
Here is a link to Haydens Catalog.
It has the dimensions, which will help you pick the right one.
http://www.haydenauto.com/catalogs/hayden/2007-hayden-fan-clutch.pdf
I am using an original 4 core radiator, fan shroud and 7 blade fan.
The motor is now a 383 and this setup pulls plenty of air.
Don

The 2710 is standard rotation, 7.23" overall diameter, .75" diameter hole for w/p pin, 1.75" mounting height, 3.0" fan bolt circle, w 4 5/16-18 bolts.
Close, but won't fit.

It looks like the 2708, 2615, or the 1707 are closer to my specs. :beers:

Ended up with the Hayden 1707. Which is also a NAPA 261308.
Non thermal, Standard and Reverse rotation, 7.23" diameter, .63" (5/8) Pilot diameter 2.03" mount height, 3.25" bolt circle to fan, and (4) 5/16" bolt "slots" for the water pump bolts.
$38

Thanks for the help guys...:thumbsup: