how hard could it be?

[felskee]

welll i have 33 's on my hoe and .....3:42's.... yes but anyways id love to know what the best ratio is for me. i was thinking 4:56 ? and also do i HAVE to change the front ones? thank you and how hard would it be?

 

[BattelWagun]

I'm not sure about what ratio would be best, but I will say this: Unless you have experience with this, I would just get it professionally done. Messing up backlash, shimming improperly, etc. could cause MAJOR issues. However, if you really want to do it yourself and you're willing to get all the proper tools, etc. and do ample research to finish the job properly though, it might be doable...

As for the front gears, you don't have to change them if you're never going to use 4WD. But if you do decide to use 4WD with 3.42's in the front and 4.56's in the rear, you can and will majorly f*ck something up. bad.

 

[felskee]

how would that mess stuff up?

 

[BattelWagun]

Dou you mean 4WD with two different ratios? Well the front tires would be pulling the front of the truck at a faster rate than the rear tires. Especially because the ratios are so far apart. This is a fully locked system so all the force of two separately geared drivetrains will be put on the transfer case, and the front an rear diffs. After a while, something will fail, most likely the TC...

 

[96ProCompTahoe]

first time you catch grip front and rear with different ratios you will be dead in the water. blown t-case , front or rear diff, or any and all of the above if not more.

if you haven't done one before and don't have someone with experience with it to help, let a shop do it.

 

[ch4d]

well here is a link for you man to look at a gear chart here you go.

http://www.tahoeyukonforum.com/forum/showthread.php?t=23591

 

[felskee]

how much would that run me?

 

[ch4d]

how much would that run me?

Depends on what brand you are looking at. You doing it your self or having someone else do it?

 

[felskee]

someone

 

[_Dylan_]

Around $500 for parts

Expect to pay over $1000 for both.

4.56/3.42=1.33 or 133%. That means that if you only geared the rear axle, the front would spin 4 times when the back would spin 3 times. Not good. The general accepted max difference is 2%, but IMO if you use 4wd on the road during winter you would want the same ratio.

It sounds like you don't know much about axles, I wouldn't suggest trying to install them. Its complicated without guidance and requires special tools.

 

[ch4d]

if you want good gears and long lasting with a good warranty i would recommend yukon gears.

 

[SunlitComet]

if axle gears are mismatched, you will have immediate drivetrain damage when 4wd is engaged.

 

[retorq]

It can't be that hard ... right??

 

[Gzes]

Yep. Either run both same ratio or just donrmt do it and save up for the gears. And yea don't do it urself go pro or go home

 

[ChrisAU]

The ONLY acceptable way to do one and not the other is to remove the front drive-shaft and effectively not have 4WD.

 

[BattelWagun]

The ONLY acceptable way to do one and not the other is to remove the front drive-shaft and effectively not have 4WD.

Because you KNOW one day you will eventually (most likely by accident) knock it into 4WD. And when that happens with separate ratios, you're up shit creek.

 

[ChrisAU]

Because you KNOW one day you will eventually (most likely by accident) knock it into 4WD. And when that happens with separate ratios, you're up shit creek.

Yes indeed. Would be quite the sh*t storm, especially if you are moving at a good pace.

 

[felskee]

haha well thanks yall ! and i only use 4 wd for muddin, so i guess im saving up

 

[19Yukon97]

I would have someone do it. My dad and I can do gears. Takes us along time to do it because we check everything 10 times to make sure its right. (10 times because if its wrong bad things could happen) We've done the 4.56's in my dads drag car. My mom's escalade needed new bearings in the front and the rear so we did it twice on that. Its definetly not a fun thing to do by any means. I would have a professional do it even with the experience i have doing it. Trust me you dont want to mess up. Drag racing buddy did his own in a mint condition camaro with a built 383 twin turbo set and he ended shooting his gears through the back end of the car destroying the back bumper, trunk lid and leaving a whole the size of a basketball in the back. IM being dead serious. he now wishes he had a professional do it. Find a 4wheelparts.com store around you and get them to do it. They are awesome thats where my truck will be getting its lift tires wheels and gears when i do it. sorry for the long post...