Deep Groove Alternator Pulley Original?

[SuperNovaSS]

Can anyone tell me if this is an original GM deep groove pulley. I have had lots of factory high performance alternators but can remember pulling off the pulley to inspect one. Did all factory pulleys have the alignment groove?


Thanks,

Jason

http://i179.photobucket.com/albums/w301/super-novass/DeepGroove003_zps94f7f5c8.jpg (http://s179.photobucket.com/user/super-novass/media/DeepGroove003_zps94f7f5c8.jpg.html)

http://i179.photobucket.com/albums/w301/super-novass/DeepGroove002_zpsfb03e99d.jpg (http://s179.photobucket.com/user/super-novass/media/DeepGroove002_zpsfb03e99d.jpg.html)

http://i179.photobucket.com/albums/w301/super-novass/DeepGroove001_zps6dae9de7.jpg (http://s179.photobucket.com/user/super-novass/media/DeepGroove001_zps6dae9de7.jpg.html)

http://i179.photobucket.com/albums/w301/super-novass/DeepGroove004_zps366e49f6.jpg (http://s179.photobucket.com/user/super-novass/media/DeepGroove004_zps366e49f6.jpg.html)

[m22mike]

Jason
That one looks like it may be a reproduction because of the lack of lathe tool marks on the face, and all of them did not have a groove. I do not have a good photo of an OE one with the tool marks but I can bet someone here does... <<GRAEMLIN_URL>>/grin.gif

Mike

[SuperNovaSS]

Thanks Mike,

This came from an alternator shop and it looks like it was run through a tumbler or something. I just wanted to be sure it was the right design.


Thanks,

Jason

[William]

We had a customer back in the day that was a major rebuilder of starters, alternators, etc. One of the deep-groove alternator pulleys Chevy used was an aircraft part and could be sourced through them for about 1/3 the GM price. Parts were identical.

[XXXGoldL34M20]

The only photo i have on file.
This is a real one from my LS6.
Hope it helps.
Seems as though my base is thicker than the face and the one you have pictured is not.

[Fast67VelleN2O]

Here ya go. Original pulley on an 837.

[m22mike]

That's what I was talking about.. <<GRAEMLIN_URL>>/biggthumpup.gif nice photo

[SuperNovaSS]

Thanks guys!


Jason

[Xplantdad]

Wow...I had one of these on my 66 (I think)? LOL

[ban617]

Also ,International tractors used the same pulley on G.M. alternators...