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Lots of AT"I harmonic balancers... which one to buy ?

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Old 03-24-2013, 12:29 PM
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Default Lots of AT"I harmonic balancers... which one to buy ?

seems like a large selection for the Ls1 any idea what i should get for my car? .. I think i have a 10% UD SLP right now how do i check the O.D. to see if its 10 or 25% UD?
Old 03-24-2013, 12:37 PM
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The SLP is 25% since it's a Powerbond pulley.

For a street car, this is the one that ATI ususally recommends: 917276
Old 03-24-2013, 01:50 PM
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Thanks for the help, its been along time ago i put on the pulleys. I do race a lot (20% of miles put on the car)... and i dont have A/C is there a better one for my useage?
Old 03-24-2013, 06:46 PM
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get the single pulley 1 .
Old 03-24-2013, 09:02 PM
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917277 with a steel hub or 917243 with an aluminum hub.

Both are 10% underdriven and for no A/C. You have to specify the 66 rubber for full race as they come with 40 durometer rubber for high performance street applications.
Old 03-24-2013, 09:32 PM
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just ordered the 917277 for 350$
Old 03-24-2013, 09:37 PM
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Awesome price!



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