Electric Fans - what all do I need to buy - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968SWBBigBlock · 07-15-2008, 04:34 PM

Next project is going to be dual electric fans.
I am looking at Spal fans (16" if they will fit)
1 - Push or pull style?
2 - Does the extra shroud to mount them in make much difference
3 - I have a stock Alternator - is it time to upgrade that if so to what
4 - Can I parallel wire the fans so the thermo switch terms them off and on @ the same time or go with the Dakota digital adjustable power source?
5 - Who makes a slick wiring harness for dual fans or should I make my own?

Any other thoughts, concerns, tips or tricks for a great fan install?

Many thanks

cparman · 07-15-2008, 05:50 PM

I had a Spal 16" on my BB Chevelle. NOISY!!! and would not keep up with Florida summers. I went to a dual fan set of 11" in a spal and they were noticable quieter, and would keep my ZZ502 between 1/2 & 3/4 on the temp gauge with the air on. I know that SPAL makes a fan controller, and I have not used one of these. I hear that they are the cats meow! this controller will allow you to set on and off temps, and turn the fans on when the a/c is on. I am going thaqt route on my Sb 69 as soon as I get the 700r4 in it. Trans first, and a/c next month or so. I really liked the dual fan set I had on my Chevelle. The dual fan set will require you to make a couple of brackets, to mount them to your radiator. The fan controller will come with wire ( I think ) and you should have everything you need. FUSE PROTECT EVERY THING!! SOMKE IS BAD!!

**Classic Heartbeat** · 07-15-2008, 06:35 PM

We sell a complete kit. Fans, shroud, thermostat, wire, terminals, over-ride switch, and hardware. Comes with a wiring diagram too. They are Duel 12" not duel 16" fans though. http://www.classicheartbeat.com/radi...&__related.htm
WES

ProStreet68SB · 07-15-2008, 08:56 PM

classic - can you send me the depth of this assembly?

07-15-2008, 04:34 PM	#1
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Electric Fans - what all do I need to buy Next project is going to be dual electric fans. I am looking at Spal fans (16" if they will fit) 1 - Push or pull style? 2 - Does the extra shroud to mount them in make much difference 3 - I have a stock Alternator - is it time to upgrade that if so to what 4 - Can I parallel wire the fans so the thermo switch terms them off and on @ the same time or go with the Dakota digital adjustable power source? 5 - Who makes a slick wiring harness for dual fans or should I make my own? Any other thoughts, concerns, tips or tricks for a great fan install? Many thanks __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

07-15-2008, 05:50 PM	#2
cparman sharp as a marble Join Date: Jan 2007 Location: atlantic beach,florida Posts: 1,082	Re: Electric Fans - what all do I need to buy I had a Spal 16" on my BB Chevelle. NOISY!!! and would not keep up with Florida summers. I went to a dual fan set of 11" in a spal and they were noticable quieter, and would keep my ZZ502 between 1/2 & 3/4 on the temp gauge with the air on. I know that SPAL makes a fan controller, and I have not used one of these. I hear that they are the cats meow! this controller will allow you to set on and off temps, and turn the fans on when the a/c is on. I am going thaqt route on my Sb 69 as soon as I get the 700r4 in it. Trans first, and a/c next month or so. I really liked the dual fan set I had on my Chevelle. The dual fan set will require you to make a couple of brackets, to mount them to your radiator. The fan controller will come with wire ( I think ) and you should have everything you need. FUSE PROTECT EVERY THING!! SOMKE IS BAD!! Last edited by cparman; 07-15-2008 at 05:53 PM.

07-15-2008, 06:35 PM	#3
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,770	Re: Electric Fans - what all do I need to buy We sell a complete kit. Fans, shroud, thermostat, wire, terminals, over-ride switch, and hardware. Comes with a wiring diagram too. They are Duel 12" not duel 16" fans though. http://www.classicheartbeat.com/radi...&__related.htm WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

07-15-2008, 08:56 PM	#4
ProStreet68SB The Engine Whisperer Join Date: Sep 2006 Location: Ohio Posts: 770	Re: Electric Fans - what all do I need to buy classic - can you send me the depth of this assembly?



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