406mac Posted July 13, 2014 Share Posted July 13, 2014 Can anyone tell what this pulley is used for?...it is made of cast aluminum....the dimensions are shown...the only mark I can find is a stamped 6720....thanks... Link to comment Share on other sites More sharing options...
Larry Schramm Posted July 14, 2014 Share Posted July 14, 2014 It looks like something more modern that would have a serpentine belt on. Maybe a component pulley like a generator. Does not look like anything GM that I have seen before. Link to comment Share on other sites More sharing options...
28 Chrysler Posted July 15, 2014 Share Posted July 15, 2014 Looks like it is for a fan / water pump. Link to comment Share on other sites More sharing options...
Guest counterpoint Posted July 15, 2014 Share Posted July 15, 2014 looks like a blower pulley. B&M mini blower maybe 177 Link to comment Share on other sites More sharing options...
leyther8008 Posted July 16, 2014 Share Posted July 16, 2014 Kind looks like a big SU dashpot piston. Link to comment Share on other sites More sharing options...
Guest counterpoint Posted July 16, 2014 Share Posted July 16, 2014 I say its a crank extension pulley for an aftermarket supercharger. Hence the 3 bolts to the harmonic balancer and center hole for the crank bolt. I say mini supercharger because they were the ones that used the small style serpentine belt. The standard v-belt pulleys for the water pump, alt, p/s went behind this pulley. I would even say its a chevy block. Link to comment Share on other sites More sharing options...
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