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What underdrive pulley do I need to go with?

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Old 07-20-2011, 09:19 AM
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Default What underdrive pulley do I need to go with?
I was told to get a Power Bond, but don't know much else.

It'll be going on a 5.3L engine.


any links would be appreciated, too.

Thanks.



Crap... this is the wrong forum. Please move.
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Old 07-20-2011, 09:57 AM
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It doesn't really matter what engine you're running, but rather what vehicle the other belt driven accessories are from. Is your powers steering, alternator, AC, etc are all from a 4th gen F-body you will need the 4th gen F-body pulley. If they're from a truck, you run the truck pulley, etc.
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Old 07-20-2011, 10:13 AM
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Originally Posted by Matt@Texas-Speed
It doesn't really matter what engine you're running, but rather what vehicle the other belt driven accessories are from. Is your powers steering, alternator, AC, etc are all from a 4th gen F-body you will need the 4th gen F-body pulley. If they're from a truck, you run the truck pulley, etc.
I am running the truck accessories. I just wasn't sure if there were different sizes, etc... It's been years since I bought a pulley.
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Old 07-20-2011, 10:18 AM
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Yes sir, you'll need the truck pulley for alignment reasons. All the 99-11 trucks use the same pulley.
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Old 07-20-2011, 10:28 AM
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What would be a good % to go with I've seen 10% and 25% but don't know the gains to either
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Old 07-20-2011, 10:30 AM
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Originally Posted by babbage1109
What would be a good % to go with I've seen 10% and 25% but don't know the gains to either
This was exactly what I was asking w/ this thread. I just wasn't nearly as clear, lol.
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Old 07-20-2011, 10:30 AM
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Matt, do y'all carry Power Bond pulleys?
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Old 07-20-2011, 10:56 AM
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Originally Posted by babbage1109
What would be a good % to go with I've seen 10% and 25% but don't know the gains to either
If you're under-driving it, I can't think of any good reason why NOT to go ahead and go 25%. If your alternator or another accessory is weak and can't keep up when under-driven 25%, it's still going to be hurting at 10% as well.

The 25% is more commonly found on the shelf, is the same price in many instances or even a bit less due to most shops stocking more of them than the 10% and therein getting a better price.
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Old 07-20-2011, 10:57 AM
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Originally Posted by DANSBIRD
Matt, do y'all carry Power Bond pulleys?
Yes sir, we do!

http://www.texas-speed.com/p-138-pow...ve-pulley.aspx
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Old 07-20-2011, 11:18 AM
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Originally Posted by Matt@Texas-Speed
Ordered. Thanks Matt.
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Old 07-20-2011, 11:21 AM
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That can be counteracted with the over drive alternator pulley right?
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Old 07-20-2011, 11:23 AM
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Originally Posted by babbage1109
That can be counteracted with the over drive alternator pulley right?
I put a March underdrive pulley on my car yeeeeears ago. I never changed anything else. Not to say you won't have to, but for me, I was able to ONLY change the underdrive pulley.
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Old 07-20-2011, 11:25 AM
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Originally Posted by babbage1109
That can be counteracted with the over drive alternator pulley right?
If your alternator has problems, then yes you can repulley it to help.
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