3.5" Idler pulley part number - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-29-2007, 09:30 AM   #11
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I must have missed the Tech info part

Thanks guys, Im working with Haro now on maybe getting the one he has.
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Old 08-29-2007, 07:10 PM   #12
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Just a FYI.. i just look up the tech info part # for the 3.5" (38020) and went to advances web site. does not match anything.

Part#:38020 is that only a NAPA part #?

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edit. everything at advance and Dayco'* website is in mm not inches
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Old 08-29-2007, 08:55 PM   #13
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Ok got the pulley.

90 millimeters = 3.54330709 inch

Dayco - Advance auto #: 89018
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Old 08-29-2007, 09:30 PM   #14
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Quote:
Originally Posted by bandit
Ok got the pulley.

90 millimeters = 3.54330709 inch

Dayco - Advance auto #: 89018
Do NOT get that one

Rubs a little on the inside...
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Old 08-30-2007, 08:01 AM   #15
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Rubs on what? Mod the bracket slightly if you need
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Old 08-30-2007, 09:10 AM   #16
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Rubs on the half circle edge that sticks out around the center shaft...

Im going to see if i can find the metal one.

That NAPA Part number. I Had Advance cross reference it.. It comes up with one that is 3.5" BUT.... the center hole is to small for the shaft.
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Old 08-30-2007, 09:43 AM   #17
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Rubs on that center part that Whaaaa???

You want me to hit up Advance? lol

Maybe a shorter belt would be easier for you?
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Old 08-30-2007, 09:46 AM   #18
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I need a new belt anyway... so maybe. but then it will make it more of a PITA to swap Pulleys...

Hey if you want. Goto advance and look up the pulley i got, the one in techinfo and the Stock one and look at them.
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Old 08-30-2007, 10:50 AM   #19
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Why? I think I have a 3.5" sitting in my toolbox NIB
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Old 08-30-2007, 05:20 PM   #20
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I had no problems with the NAPA plastic 3.5".
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