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From: parnass@ihuxf.UUCP (Bob Parnass, AJ9S)
Newsgroups: net.auto
Subject: Chevy/GMC trucks: cooling system
Message-ID: <2363@ihuxf.UUCP>
Date: Thu, 23-Aug-84 20:50:45 EDT
Article-I.D.: ihuxf.2363
Posted: Thu Aug 23 20:50:45 1984
Date-Received: Sat, 25-Aug-84 05:38:18 EDT
Organization: AT&T Bell Labs, Naperville, IL
Lines: 31


x

  Have any of you owners of full size  Blazers	(or  Chevy/GMC
  trucks) replaced the fan with	one that moves more air?

  I have a 1980	4wd Blazer

     - with heavy duty cooling

     - without air conditioning

  I've just had	the radiator core, radiator cap,  fan  clutch,
  and thermostat replaced.  Also replaced were upper and lower
  radiator hoses and clamps (total bill	= $463).  The OEM core
  self-destructed  apparently after repeated operation at high
  temperatures and pressure, despite normal indication on  the
  temp gauge.

  The owner of the radiator repair shop	pointed	out  that  the
  OEM 3-blade fan really wasn't	sufficient to move air through
  the radiator on hot days.  He	couldn't  locate  a  fan  with
  more blades that would fit the Blazer.

  I'm interested in whether anyone has tried a fan  with  more
  blades  for improved cooling performance in their Blazer/GMC
  Jimmy.

-- 
===============================================================================
Bob Parnass,  Bell Telephone Laboratories - ihnp4!ihuxf!parnass - (312)979-5414