Water Pump V-Belt vs Serpentine Belt

Slant 6 Engines

  1. Steven Tyminski

    Steven Tyminski New Member

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    Looking at buying a new water pump for my '78 /6.
    Searching from my year/make/model, many sites list multiple pumps and offer a less expensive pump which states it is for a serpentine system. These sites offer both Serpentine and v-belt pumps for the same year /6's. There is a weight difference of 4 oz. between the two.
    Is there really a difference between the two?
    Is it the impeller size that is different between the two?
    Is it the impeller shaft length?
    Thanks,
     
  2. Dana67Dart

    Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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    typically a serpentine belt driven water pump rotates reverse of a v belt driven one. Can not say for \6 but all V8s I have seen it it so
     
  3. Charrlie_S

    Charrlie_S Well-Known Member

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    Slant six never had a serp belt from the factory. I have never seen a catalog that listed a serp belt for a slant six, only V belt. If you do find a slant six serp belt water pump, you will also need a crank damper, and alternator pulley.
     
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