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What belts for powerbond underdrive pulley?

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Old 07-19-2013 | 12:06 PM
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Default What belts for powerbond underdrive pulley?
Part # pbu-1117-ss25 pretty sure I need a 6pk-1970 for the main drive belt but I believe the ac part of the pulley is only a 10% underdrive? Thanks for the help this is on a 98 c5 btw
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Old 07-19-2013 | 03:38 PM
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Okay from what I got from ballistic speed is that the K060763 and K040378 are the right part numbers, anybody validate?
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Old 07-25-2013 | 08:13 PM
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Bump I need help with this guys, the powebond udp measures 6" outer diameter and I read somewhere the stock pulley on the ac side is 7.25" od. I just got back from oreillys and got a k040410 for the ac
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Old 07-27-2013 | 06:14 AM
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Pulled the stock belt off yesterday and it's the same size as the k040410 I picked up. Anybody know how to figure out how much smaller of a belt I'm going to need ?
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Old 07-27-2013 | 03:48 PM
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40378 for the AC belt and a 60785 for the main belt
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Old 07-28-2013 | 04:31 AM
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I ended up using a k060775 for the main belt and a k040400 for the ac belt
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