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#1 |
Account Suspended
![]() Join Date: Mar 2013
Location: lumberton tx
Posts: 575
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help buying electric fans for 86 350 tbi
Hi all my dad was wanting some efans for his 86. 350 engine. What is everyone running for these trucks and is there a kit thatb includes relays and wiring? Thanks! Oh and its tbi if that matters
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#2 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: help buying electric fans for 86 350 tbi
Summit and Jegs has kits. Many people go to junk yards and get electric fans from vehicles with them at a real good price and buy controllers.
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'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. |
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#3 |
Registered User
Join Date: Jul 2012
Location: Chester Il
Posts: 32
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Re: help buying electric fans for 86 350 tbi
You may have to upgrade your alternator. Depends on the fan or fans but i know my stock alternator can barely handle the blower on high with the brights on...lol...If i was going to do efans i would get a Taurus or Mark Viii/Thunderbird Lx fan and order a controller from DCControllers...thats just me...good luck
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#4 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: help buying electric fans for 86 350 tbi
Yes I would consider an upgrade on your alternator, I put a unit from Tuff Stuff on my trucks to get the 140 amp capability and the 80 amp support at an idle, where most alternators only carry 35 amps at idle.
I am running a set of dual 11" electric fans from SPAL on my 84 truck and I am using a fan controller that lets me adjust the turn on and off points. A person can do it cheap, but it is your truck and you want it to work without a lot of down time, so spend the right dough the first time and don't worry about it later. I also had the same fans set on my 91 Silverado and it worked fine until I sold it. The SPAL fans come iwth their own shroud, so all you have to do is make the mounting brackets for hoding the shroud up to the radiator. I made mine from mill stock aluminum straps from the hardware store in my area. The electric fans took some drag off of the enigne and the upgrade in the alternaotr put a little back, but I realized a small mileage gain in the daily driving of the truck, with the fans. The enigne warmed up easier in the winter and the cooling worked even when the truck was sitting at a stop, where a mechanical fan would slow down due to the engine not turning as fast. YOu can buy the fans in Summit Racing under the Be Cool fan line. OR you can go to the junkyard and build what you want from a reclaimed fan setup. http://www.centechwire.com/Fan-Controllers_c10.htm Check this site out for fan controllers.
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Frank |
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#5 |
Registered User
Join Date: Sep 2008
Location: Bailey, NC
Posts: 2,462
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Re: help buying electric fans for 86 350 tbi
Here's a picture of one that member UAThahoe posted a few weeks ago. I think it turned out nice. You can get it online at Advance Auto for around $215 shipped. Part number is 536288 and apply coupon code DOW12 for $50 off. You will have to get a seperate controller but Hayden and Spal make a universal kit.
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Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT |
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#6 |
Registered User
Join Date: Mar 2012
Location: Huntsville, AL
Posts: 1,000
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Re: help buying electric fans for 86 350 tbi
Was actually getting ready to post this up. LOL. I will be using the painless wiring 30115 electric fan relay kit to control it.
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#7 |
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Location: lumberton tx
Posts: 575
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Re: help buying electric fans for 86 350 tbi
this wiring kit...it will allow you to work any efan setup on your truck? ie is t universal? Trying to see if this kit would allow me to wire up my e fans I bought from an 04 rendzevous that a buddy also put in his 85. they fit great
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#8 |
Registered User
Join Date: Sep 2008
Location: PASADENA,TX
Posts: 206
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Re: help buying electric fans for 86 350 tbi
I run dual fans off a v6 3.8 impala with a home made relay control, with a manual switch instead of thermometer. And thats enough to cool the 468 in my truck.
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#9 |
Registered User
![]() Join Date: May 2009
Location: Weymouth Ma
Posts: 489
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Re: help buying electric fans for 86 350 tbi
A Volvo S80 99 and up, or V70 01 and up is a pretty nice set up with a shroud, close to size of stock rad. My buddy has one inhis K5, and I think I might put one in my K30, as I have several.
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03 GMC Yukon XL 2500 Quadrasteer, wife`s DD 84 Chevy K30 CC SRW 55 Chevy 210 2dr post |
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#10 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: help buying electric fans for 86 350 tbi
Spal 11" fans in a 91 silverado and also in an 84 GMC.
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Frank |
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#11 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: help buying electric fans for 86 350 tbi
I just picked up a Ford Windstar dual fan setup. Apparently alot of guys on CK5 use them, they flow alot of air (4400 CFM). Unfortunately your TBI ECM (1227747) does not support electric fan control. You can use a thermo fan switch for an 86 Camaro 2.8L (Part # TS82), its fairly inexpensive and 3/8 NPT, to control the fans.
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#12 |
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Location: lumberton tx
Posts: 575
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Re: help buying electric fans for 86 350 tbi
Thanks for all the input guys I really appreciate it
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#13 |
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Location: lumberton tx
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Re: help buying electric fans for 86 350 tbi
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#14 |
Account Suspended
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Location: lumberton tx
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Re: help buying electric fans for 86 350 tbi
also, can anyone recommend a beefy alternator for this application? Nothing too spendy!
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#15 |
Registered User
Join Date: Mar 2012
Location: Huntsville, AL
Posts: 1,000
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Re: help buying electric fans for 86 350 tbi
The relay kit is universal. Should work with any fan setup.
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#16 |
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Location: lumberton tx
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Re: help buying electric fans for 86 350 tbi
ended up buying this kit
http://www.summitracing.com/parts/hda-3651 |
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#17 |
Registered User
Join Date: May 2010
Location: Shoals, AL
Posts: 299
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Re: help buying electric fans for 86 350 tbi
Resurrecting the dead......do electric fans actually free up a lot of HP?
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#18 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: help buying electric fans for 86 350 tbi
The drag from a stock belt driven fan has been related to approximately 20 HP, so yes removing that fan can free up the engine to do better things. I realized a good solid 1 MPG gain on my 91 daily driver, when I got rid of the fan and went to electric. That may not sound like much, but on a brick, that is quite a bit.
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Frank |
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#19 | |
Registered User
Join Date: Apr 2014
Location: Bloomington Indiana
Posts: 1,041
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Re: help buying electric fans for 86 350 tbi
Quote:
2) You don't need a fan at speed anyway, because the ram air is going faster than the fan can move air. 3) I couldn't maintain a decent operational temperature in the coldest part of the winter. Even when the thermostat is closed, it leaks some fluid past. Result: when it is coldest out, little heat in the cab. Sucks. So I put in an electric fan (just blowing through from the front, not shrouded from the rear), and I block off the ram air in the winter. (Note: 350s run cold, 454s run hot. I wouldn't recommend this for a BBC.) Here's the write-up (on another forum; let's see if this links ![]() http://www.fullsizechevy.com/forum/g...tall-pics.html And the alternator upgrade. http://www.fullsizechevy.com/forum/g...e-55a-94a.html
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Rich Weyand 1978 K10 RCSB DD. Last edited by rich weyand; 10-30-2015 at 12:55 AM. |
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#20 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: help buying electric fans for 86 350 tbi
An additional 1mpg when the vehicle gets 18mpg is a 5.4% gain. That's more than a small improvement.
An additional 20HP on an engine that's rated for 145-165HP is 11.5% - 10.3%. Again nothing to sneeze at. The LT1 engine Impala and Caprice B-Bodies used electric fans.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 10-27-2015 at 05:21 AM. |
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#21 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: help buying electric fans for 86 350 tbi
It is still on the road and the fan install is over 5 years old.
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Frank |
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#22 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: help buying electric fans for 86 350 tbi
The T400 chassis CS130 or CS144 conversion is an option for higher than 94A... if you need it.
A custom 12SI can't be sourced at just any parts house when it fails... the stock amperage CS series can.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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#23 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: help buying electric fans for 86 350 tbi
I swapped a CS144 from a 93 Fleetwood onto my 86 when it had the TPI 305. Used the mount spacer from the stock alt and swapped the pulley over, Upgraded the main charge wire to 8AWG and swapped the plug as well. Not quite plug and play but close.
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#24 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: help buying electric fans for 86 350 tbi
Hint: The place that you will need a larger alternator is not at highway speeds, but sitting at a stoplight with the fans running, the A/C on and if you are up to date an upgraded stereo playing. That means what you need is an alternator that carries more load at the idle speed and not at highway speeds. I went to the company "TUFFSTUFF" and they carry such an alternator. Good people and prices that are not to bad. I have used more than one of their alternators and they last.
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Frank |
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