70 Skylark 455 radiator shroud alignment

Discussion in 'The Big Chill' started by BuickBarr, Apr 27, 2019.

  1. BuickBarr

    BuickBarr Well-Known Member

    Next issue in sorting out this cooling system: thermal clutch fan mounting height.

    I assume fan height is measured from the end of the shaft mounting flange to the fan mounting surface. I'm getting about 2"...pic attached. This is different from the 1.53 or 1.62" info at http://www.buickperformanceclub.com/FanClutchInfo.htm

    If i'm measuring correctly I could get the fan closer to optimal position by getting a shorter fan.
     

    Attached Files:

  2. copperheadgs1

    copperheadgs1 copperheadgs1

    It’s not the fans it the clutch that changes the distance.
     
  3. BuickBarr

    BuickBarr Well-Known Member

    That's what I'm asking about, the fan mounting height in the fan clutch.
     
  4. 87GN_70GS

    87GN_70GS Well-Known Member

    You are measuring correctly. Maybe the clutch is mis-boxed?
     
  5. copperheadgs1

    copperheadgs1 copperheadgs1

    I would suggest taking the clutch off and having the parts store order one for a 70 455. Take the old one with you and see if they are different. I am guessing yours is wrong. It looks too long. All for 70 and 71 I have seen were the same length.
     
  6. copperheadgs1

    copperheadgs1 copperheadgs1

    Then again the 71 long water pump is not meant to be used with a 70 fan shroud. That’s your real problem I bet. That’s at least an inch to long.
     

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