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1500 Z71 lifted looking for opinion on programmer and gears

1500 Z71 lifted looking for opinion on programmer and gears

Postby timtoolman24 [OP] » Apr 03 2011, 12:02am

I have a 1500 silverado Z71 with a 10.5 lift with 37" tires on 22"rims. I currently looking to upgrade my rear end gears and maybe a programmer. I have a 3.42 rear end now, will a 4.10 be fine, I don't do much offroading it's mostly a daily driver that I tow four wheelers around. Should I install a programmer? Looking for power back and tow back but don't wanna scarfice to much mpg by gearing it to low. Thanks for any help
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby Caldwell » Apr 03 2011, 12:50am

you should be looking in the range of 4.88's i think. Those should put you back close to factory gearing / rpms ( crusing @ 70 mph ), with those size tires. ditch the idea of 4.10's with tires that big...

god bless your transmission with those monster tires !

A tune will help bring mods like ( Intake, Exhaust etc etc. ) together, and make a little better power...
CALDWELL
08 Silverado, 5.3L, Extended Cab, Z71, 4x4
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17x9 KMC XD Series Addict Rims
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby TexasZ71 » Apr 03 2011, 4:18am

if it were my truck, id go 4.56, with a superchips programmer or edge.

im an offroad guy, i know gears.
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby timtoolman24 [OP] » Apr 03 2011, 6:00am

Thanks 4.56 isn't going to be to low to where my rpm is going to be to high going down the interstate at 70?
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby Browny10783 » Apr 03 2011, 12:50pm

Damn I want to see a pic of your truck bro
DD 2010 White Texas Edition Silverado Ext Cab
Daystar Leveling Kit-Window Tint-305/55/20 Nitto Terra Grabblers
Magnaflow muffler with SS Tip, 8K HID

Toy 1991 Jeep Cherokee Laredo
4.5 lift, 33-12.5-15 Dakota AT's
And much more for off roading
3443
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby timtoolman24 [OP] » Apr 03 2011, 6:29pm

I uploaded some pics on my profile, just click on my name.
But the 4.56 gears, they wont make me run to high of rpm going down the highway? I also forgot to mention I have the 6speed auto transmission, if that makes any diff.
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby TexasZ71 » Apr 03 2011, 6:35pm

they shouldnt. but if your scared of that happening, go with 4.88s. either one, you should be fine for awhile
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby timtoolman24 [OP] » Apr 03 2011, 6:51pm

Thanks for all the help probably going to go with the 4.56. Any good sugestions on which brand to buy and what website. I plan on installing it myself.
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby Browny10783 » Apr 03 2011, 7:31pm

Very nice Rig bro
DD 2010 White Texas Edition Silverado Ext Cab
Daystar Leveling Kit-Window Tint-305/55/20 Nitto Terra Grabblers
Magnaflow muffler with SS Tip, 8K HID

Toy 1991 Jeep Cherokee Laredo
4.5 lift, 33-12.5-15 Dakota AT's
And much more for off roading
3443
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Re: 1500 Z71 lifted looking for opinion on programmer and ge

Postby devilblue14 » Jun 18 2012, 4:39am

Tim, what gears did you end up going with? Did it help your mpg's? Thanks
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