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Thread: Installing E-Fans

  1. 01-25-2010 07:36 AM #1
    CooperS7777
    CooperS7777 is offline Some talent, mostly balls
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    Installing E-Fans

    Im going to be putting e-fans and a 34" radiator into my 03 ECSB.

    I just wanted to check before I tore into the install - what should I have on hand? Will I need new radiator hoses from something with the 34" radiator and efans stock?

    How about the belt and pullies. Id imagine I will need a shorter belt - are there any proven UD pullies I may be able to install while Im in there?

    Any upgraded pullies/pullies I should upgrade that are common failure points?

    I will be using Nelson's harness and Flex-a-lite 282's so I think Ive got that end covered.
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  2. 01-25-2010 08:17 AM #2
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    MidwestSS
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    no you dont need new belts. no you dont need new hoses. you should probably get a 160 tstat, and you will have to get tuned for efans in your PCM.
    clamp your belt to one of the pulleys with a c clamp and use a big wrench to get the fan off.
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  3. 01-25-2010 06:31 PM #3
    CooperS7777
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    Awesome, thanks for the reply! I have hpt waiting at home too so I'll be all set tuning wise. I'll be sure to grab a new T stat too.
    Quote Originally Posted by ff_jeff View Post
    Ill grab some ditch to get a cat...
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    06 CCSB Duramax - 12 second tow pig
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  4. 01-25-2010 10:11 PM #4
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    txarkitekt
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    Quote Originally Posted by CooperS7777 View Post
    Im going to be putting e-fans and a 34" radiator into my 03 ECSB.

    I just wanted to check before I tore into the install - what should I have on hand? Will I need new radiator hoses from something with the 34" radiator and efans stock?

    How about the belt and pullies. Id imagine I will need a shorter belt - are there any proven UD pullies I may be able to install while Im in there?

    Any upgraded pullies/pullies I should upgrade that are common failure points?

    I will be using Nelson's harness and Flex-a-lite 282's so I think Ive got that end covered.
    +1 on what Mike said.

    ASP pulleys are proven to free up some good HP and help a little with mpgs. The Nelson harness and FAL 282s is a really nice setup.

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
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  5. 01-25-2010 10:15 PM #5
    Tank
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    what about alternator??? especially with underdrive pullies. 105 will struggle at idle especially with lights on or something??
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    06 2wd

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  6. 01-25-2010 10:16 PM #6
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    txarkitekt
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    Nope. I got the crank+alt pulleys when I did mine and I actually gained a couple volts at idle vs the stock pulleys. Plus it gave me some extra power and revs nicely.

    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
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  7. 01-25-2010 10:28 PM #7
    Tank
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    Sweet! thanks for the info
    04 Silverado Z-71 Extended Cab

    Magnaflow, 10.4 TV 50 wires, tr-55ix, Synthetics, HID's, JL audio, 33.5", leveling kit, tuned, CAI, vette servo, cam, valve job, pacesetter. 9.3@77.5 and 14.5@93.4

    06 2wd

    custom cam, tune, 3.73's, servo, HID's, 10.4mm wires, long-tubes, CAI, magnaflow, 2.5" shackles, Circle-D 3200, UD, JL Audio 4.1, Alpine 5ch
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  8. 04-09-2010 10:15 PM #8
    Fasglas
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    What is the story on the water pump pulley, is it a press fit on the water pump shaft? Or is it bolted on? When you remove the fan and clutch do you need to put anything back on to hold the pulley on the shaft when changing to e-fans?

    I've never worked on a Gen III and was kinda wondering before I took it apart.
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  9. 04-09-2010 10:19 PM #9
    RedHeartbeat
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    its part of the waterpump, pressed into position. Take the fan and clutch off and you're done.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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  10. 04-09-2010 10:19 PM #10
    Fasglas
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    Thanks!
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