14 Shelby belt size help

Johnferris

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i have a 2.93 upper
Idler pulley and I’m getting a 10% lower pulley what size belt will I need to get ? Any help would be great
 

JimIII@jdm

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i have a 2.93 upper
Idler pulley and I’m getting a 10% lower pulley what size belt will I need to get ? Any help would be great


Stock Supercharger? The stock upper is a 2.67" upper, so to get it straight you have a larger (2.93") upper and a 10% lower pulley is going on? If that is the case the belt from a 2007-2012 should be a close, tight fit. There isn't much option for belt sizes for these cars that are close to stock so I think it would be your only bet. Other than changing the size of any idler pulleys, which I wouldn't recommend.

JK10843 is the stock 13-14 belt = 84.25"
JK10847 is the stock 07-12 belt = 84.75"
Gates K100852 = 85 7/8" which is probably too long but you could add an auxiliary idler to the mix

We always try to fit a belt as tight as possible.

Hope this helps,

JimIII
 

Johnferris

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Messages
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Stock Supercharger? The stock upper is a 2.67" upper, so to get it straight you have a larger (2.93") upper and a 10% lower pulley is going on? If that is the case the belt from a 2007-2012 should be a close, tight fit. There isn't much option for belt sizes for these cars that are close to stock so I think it would be your only bet. Other than changing the size of any idler pulleys, which I wouldn't recommend.

JK10843 is the stock 13-14 belt = 84.25"
JK10847 is the stock 07-12 belt = 84.75"
Gates K100852 = 85 7/8" which is probably too long but you could add an auxiliary idler to the mix

We always try to fit a belt as tight as possible.

Hope this helps,

JimIII
2.39 upper I’m sorry
 

JimIII@jdm

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Location
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Ok so then a 843 belt and auxiliary idler is probably going to be what you need to run.
 

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