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373 or 410

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Old 12-14-2010, 11:46 AM
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Default 373 or 410

hey fellas I have a 4.8 silverado ext cab with 342 gears with 275/55/20 tires its my daily also have intake, headers, pulley, servo and a tune .Question is should I go with 373 ,390 ,410 gears thank you in advance for your help
Old 12-14-2010, 11:49 AM
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do you drive mostly city or highway? i have the same truck and an inch bigger tires and i'm getting 15 all city, and about 19 all highway.
Old 12-14-2010, 11:51 AM
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I saw 4.10 if mixed. If alot of highway 3.73
Old 12-14-2010, 11:58 AM
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I work in the plants and I never know where they are gonna send me next so yeah

Last edited by MAG1C; 12-14-2010 at 12:13 PM.
Old 12-14-2010, 02:29 PM
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4.10 will be fine with those 20". Throw you a little converter in there and wake it up.
Old 12-14-2010, 03:26 PM
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what kind alot of people told me that the trail blazer stall its good or what do you suggest
Old 12-14-2010, 04:00 PM
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but alot of people tell me 410 get bad milage and the rpms atte gonna be running hi how true is this
Old 12-14-2010, 04:15 PM
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i have 3.73s in my 2008 in winter i role with 275/55r/20 i have no problem stompin on the gas as she gets up and goes. in the summer i have a set of 265/45R/22 a lil heavy'R than the stock 20 but has enough gear to get her movin. with your setup id go with 3.73 u can pull, get somewhat good MPG, and theres enough gear to get those tires cookin.
Old 12-14-2010, 04:31 PM
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ok any one else
Old 12-14-2010, 05:00 PM
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I'd just get the 4.10s, but that's me.


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