3.25" pulley....what belt? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-06-2006, 06:47 PM   #1
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Default 3.25" pulley....what belt?

Yup, for the 99. I am wondering if anyone know'* the belt length for using the 3.25" pulley with no IC, and no oversized idler pulley on the H-body?

Need part # asap so I can get it to the shop tonight or tomorrow so I can have the motor and trans ready to drop in Thursday or Friday.
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Old 11-06-2006, 07:16 PM   #2
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you could use a 715 belt then go to the oversized tensioner....although this is not the best setup because of clearance issues between the tensioner and the supercharger
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Old 11-06-2006, 07:29 PM   #3
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Yeah, I just tried to figure it out via ZZP'* belts guide.
They don't give a belt # for anything less than the 3.4" for the H-body, so I figured it'* going to be the same drop in size as the W-body.
I am going to go with the 715 for now, and if that slips I'll just get a 710 and that'll be really snug.
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Old 11-06-2006, 10:28 PM   #4
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I'd go with the 710 to begin with and if it slips throw on the 3.25 tensioner
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