A/C delete pulley...which one exactly?

[87geeinn]

Motormite one( $39.99):

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OR

Dorman one ($27.99):

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Are they both pretty much identical and just different manufacturers? They both have very different applications listed with the exception of the 4.3v6 S-10 application that everyone says to ask for.

 

[David65]

The Dorman/Motormite website lists the 34224 for the '87 GN and some S-10's with the 2.8. They show the 34152 fitting some S-10's with the 4.3, but not being used on the GN.

 

[87geeinn]

The Dorman/Motormite website lists the 34224 for the '87 GN and some S-10's with the 2.8. They show the 34152 fitting some S-10's with the 4.3, but not being used on the GN.

After some more digging, most other retailers' fitment guides agree with your statement. Here's a comparison of the two (#34152 vs #34224). On a visual inspection it looks like the aluminum brackets are identical but the 34224 appears to have bigger pulley. So, I'm going to go with the 34224 as I probably have a better chance of being able to retain the serpentine belt I have on there already.

 

[sam87]

another source

Got mine here: Your Online Source For GM Parts and Licensed Apparel Required a slightly smaller belt.