More Clutch Fan Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1972RedNeck · 08-24-2011, 08:13 AM

How far away can my clutch fan be from the radiator? I have a short water pump, and will be getting a 4WD shroud.

Thanks

Shyguy · 08-24-2011, 10:06 AM

The fan clutch on my '71 with a 454 is 3/4 to 1 inch from the radiator. That way it fells the heat off the radiator faster and engages the fan keeping the engine cool.

**Stocker** · 08-24-2011, 10:59 AM

No need to be that close with a shroud..... the hot air from the radiator is funneled directly to the fan & clutch unit. My '72 is all OEM and the front of the clutch is 6" away from the radiator. And not that you asked, but the fan sits fully inside the shroud -- that is, the back edge of the fan blades line up with the rear of the shroud opening.

08-24-2011, 10:06 AM	#2
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: More Clutch Fan Questions The fan clutch on my '71 with a 454 is 3/4 to 1 inch from the radiator. That way it fells the heat off the radiator faster and engages the fan keeping the engine cool. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.

08-24-2011, 10:59 AM	#3
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,519	Re: More Clutch Fan Questions No need to be that close with a shroud..... the hot air from the radiator is funneled directly to the fan & clutch unit. My '72 is all OEM and the front of the clutch is 6" away from the radiator. And not that you asked, but the fan sits fully inside the shroud -- that is, the back edge of the fan blades line up with the rear of the shroud opening. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay



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