95 yukon gear ratio change

[jonnyukon]

Well I've finally came up with enough money to get my gear ratio changed... My truck has a 6 inch Rough county lift and I have kmc monsters with nitto terra grapplers in a 305/55/20 and I'm pretty sure the truck has 3.73 gears but I'm not sure if anyone knows what code to look for in the glove box that would help! But I wanna go up to the 4.11 and I'm having my local shop that does a lot of bigger trucks drivetrains hook me up. But would 4.11 be a good change for just mainly towing a trailer and just using the truck on weekends to cruise with and pulling our toys up north to go riding and here is a pic of my baby

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[am92]

Honestly the change from 3.73 to 4.11 won't be all that noticable. When I put the new axle in my truck I went from 3.73 to 4.10 and the only difference I noticed was that it didn't downshift on this one hill by my house anymore because the cruising RPMs were a little higher. If you ever plan on getting bigger tires like 35's I'd recommend stepping up to 4.56 gears. Truck looks awesome by the way!

 

[jonnyukon]

Not going any bigger tires anytime in the future I like it just how it is... But would 4.56 be way too much for highway toy hauler ?

 

[jonnyukon]

And what speedo and transmission correction product works the best?

 

[am92]

Yeah 4.56 would have you running pretty high higway RPM...best option for speedo and trans correction would be a custom chip from somewhere like tbichips.com. It'll also get you some good power and possibly mileage gains

 

[jonnyukon]

Well I drive trucks for a living an I like about 65 for towing and if I'm correct I'd be running
2700in 3rd @65
1900in lockup@65
With the 4.11 and
3000 in 3rd @65
2100 in lockup @65
With the 4.56

 

[jonnyukon]

I was looking at Jett performance accu speed plug in thingy

 

[jonnyukon]

Bumpy

 

[jonnyukon]

4.11 or 4.56 hmmmmm decisions decisions

 

[jonnyukon]

I'm leaning toward 4.11