Speedometer adjustment for lift and gear

[abishoff]

What is the best programmer to fix my speedometer? I'm putting on 37s and possibly 40's one day with 4:10 gears. I've used a hypertech before but it only does 35's. This if for a 2006 Yukon XL Denali. I doing a 6.5" BDS and I already have a 3" PA body lift.


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[fiatdale]

If you're running 37 or 40s you'll need lower gears than 4.10.

But aside from that, I believe most all can do up to 40" tires and 5.13 Gears. I have the Diablosport Intune and I know i can go 40"

Check the for sale sections on here and GMFS, even pt. net. There's usually always someone selling a programmer that will be cheaper than new.

 

[02_Tahoe]

What is the best programmer to fix my speedometer? I'm putting on 37s and possibly 40's one day with 4:10 gears. I've used a hypertech before but it only does 35's. This if for a 2006 Yukon XL Denali. I doing a 6.5" BDS and I already have a 3" PA body lift.


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I think you should get 4.56s for those tires, as for the programmer maybe go with edge

 

[M1Gunner]

You

What is the best programmer to fix my speedometer? I'm putting on 37s and possibly 40's one day with 4:10 gears. I've used a hypertech before but it only does 35's. This if for a 2006 Yukon XL Denali. I doing a 6.5" BDS and I already have a 3" PA body lift.


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For 37's you're gonna wanna run 5.13's or 5.88's. If you're even thinking about going bigger than 37's you'll want to go with the 5.88's but that's just my opinion. I like having power to go with the bigger tire size.

I've ran 35's with stock gears then regeared to 4.10's. I ran 37's with the 4.10's and then regered to 5.13's. And I'm in happy with this setup but would definitely regear to 5.88's if I decided to go any bigger.

 

[abishoff]

Ok. I'll look into it. I know I want to do an e-locker in the front and posi in the rear. I was about to do a 4l80 swap but the 4l65 went out before I could get everything together. So I'll have to wait another year until the trans rebuild warranty goes out.


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[M1Gunner]

Ok. I'll look into it. I know I want to do an e-locker in the front and posi in the rear. I was about to do a 4l80 swap but the 4l65 went out before I could get everything together. So I'll have to wait another year until the trans rebuild warranty goes out.


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Swappin gears in the diffs voids your tranny warranty?

 

[abishoff]

Swappin gears in the diffs voids your tranny warranty?

Idk if this guy cares. It was a small shop in North Texas and all he does is major trans. It was only a $1000 cash for a tow package rebuild with the corvette servo. But I'll call and ask him anyway.


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