87 S-10 alternator

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Bill - 19 May 2008 00:53 GMT

Is there one of those mid year changes on an 87 S-10 Blazer?
Friend I am helping fix his Blazer bought the wrong alternator.
He went to Advance to get it, and it does not fit. The mounts are like 6
o'clock, and 1 o'clock. Instead of 12 o'clock, and 6.

This one has the flat belt, not the v belt style.

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James Fedorawicz - 19 May 2008 01:04 GMT

Take it back. They gave you an alternator that is "clocked" wrong.
The mounts are set (clocked) like the numbers on a clock face and this
one is obviously wrong for that application.

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You should never confuse the issue by injecting the truth. ~ unknown ~

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Steve W. - 19 May 2008 06:02 GMT

> Is there one of those mid year changes on an 87 S-10 Blazer?
> Friend I am helping fix his Blazer bought the wrong alternator.
> He went to Advance to get it, and it does not fit. The mounts are like 6
> o'clock, and 1 o'clock. Instead of 12 o'clock, and 6.
>
> This one has the flat belt, not the v belt style.

They gave you one for a newer engine. Next time open the box and verify
before leaving the store. If it is wrong they may need to update the
data in the computer.

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Steve W.

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Bill - 19 May 2008 21:10 GMT

Turns out the previous owner changed out an 87 alternator for an 85.
All I had to do was swap the pulley.

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