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thermal fan clutch

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Rattler, Oct 25, 2002.

  1. Rattler

    Rattler Registered Member

    Joined:
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    Location:
    maple falls wa
    WHAT IF, i were to replace my thermal clutch fan (1989 k5)
    with a non thermal clutch fan. or what if i went with a (perma cool) fan clutch replacer.the motor is stock 350 tbi
    these thoughts have come about due to the loss of current one and the high cost of replacing it, give me some ideas..............
     
  2. Tweetysuarus

    Tweetysuarus 1/2 ton status

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    Location:
    Lynnhood,WA
    Get one from the Bone Yard, Fitz Auto wreckers should have them.
    Bill
     
  3. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
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    Location:
    Georgetown, TX
    The thermal fan clutch gives you the best of both worlds. When the engine is cool, the clutch releases and lets the fan mostly coast, giving you more power for the wheels. /forums/images/graemlins/cool.gif When the engine gets hot, that biga$$ fan kicks in and sucks major amounts of air though the radiator. It uses more power then, but it moves a lot of air! If you go to a solid mount, then the fan will be pulling hard all the time. A new clutch should run about $75 or so. One from a junkyard should be really cheap.
     

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