jferg92

Boom. Gears here I come. Made a deal with my buddy and am going to leave the truck with him for a week or so when I move

Jackedup00

Or.. or.. you could do an axle swap to 2 1/2s and get 6.72 gears without opening the diff up..

But seriously,4.56 right?

jferg92

4:10s or 4:30s if I can find a reverse cut 8.8. I would do 4:56 but I don't want to ever go above a 35 and I don't want to pull 2400rpm down the freeway

Jackedup00

4.56 should put you near stock. I personally wouldn't spend the money just going to 4.10 unless it was really cheap.
Ask fx4 what he's running rpm wise

MyFX4Project

2200 rpm at 70. Its not fun when you can't go faster than like 85 max.

Just go 4.10 and be done with it. If I were to do it again I'd put 4.10s in.

02-wht-sc

my 4.56s and tune put my rpms at 2300 or so at 75. The tuning helps a lot as far as that goes. Puts my highway speed right in the middle of my power curve so I get pretty good Mileage on the interstate, even with all the hills I drive around on.

Jackedup00

Are those gear-tire charts off? Because they say on the chart 4.10 and 33s would be equal to stock,4.56 for 35s,4.88 for 37s 5.13 for 40s etc.

MyFX4Project

That's just a rough estimate. Running a lower gear will lower your top speed no matter what.

MyFX4Project

I'll take a picture of my livewire on my way to work tonight and show you my exact RPMs and speed to the decimal point lol

Jackedup00

I believe you,just trying to get a read on how far those charts are off.
If they're off that much 5.13s may have been a bad choice for 40s..