DO IT.

Before I put my lift on my H2, my gas mileage was roughly 11-12 mpg. That was driving mostly city, minor highway.

When I put the lift with the 38's on it, my mileage immediately went from the 11-12 mpg to 8.6-9.1 mpg.

My logic was to install 4.56's which would bring the truck as close as possible to the stock configuration.

Point is, though I only installed them this weekend, I am averaging 11.0-11.5 mpg with way more power.

Excluding the labor because I did it, I've got less than 700 bucks in it. At a 2-3mpg increase, it won't take long to cover the cost of the gears.

Anyway, DEFINITE improvement, well worth the effort and money.

Mark

DO IT.

Before I put my lift on my H2, my gas mileage was roughly 11-12 mpg. That was driving mostly city, minor highway.

When I put the lift with the 38's on it, my mileage immediately went from the 11-12 mpg to 8.6-9.1 mpg.

My logic was to install 4.56's which would bring the truck as close as possible to the stock configuration.

Point is, though I only installed them this weekend, I am averaging 11.0-11.5 mpg with way more power.

Excluding the labor because I did it, I've got less than 700 bucks in it. At a 2-3mpg increase, it won't take long to cover the cost of the gears.

Anyway, DEFINITE improvement, well worth the effort and money.

Mark

I'm running 37's (no lift) and noticed no difference in mpg....Still @ like 12.

OC, what make did you install? I want to do that this spring my H2 doesn't like to move my 41's

I waited a long time before I finally changed the gears. Huge difference, wished I did it sooner. I also went with 4.56 gears.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by MUH_HUM:
I'm running 37's (no lift) and noticed no difference in mpg....Still @ like 12. </div></BLOCKQUOTE>
Did you change your gears? (I'm assuming you did) Do you ever tow anything? Is there a difference in power?

OC,

Where did you get your gears?

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by H2 Rocks:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by MUH_HUM:
I'm running 37's (no lift) and noticed no difference in mpg....Still @ like 12. </div></BLOCKQUOTE>
Did you change your gears? (I'm assuming you did) Do you ever tow anything? Is there a difference in power? </div></BLOCKQUOTE>

I'm astounded that he didn't notice any difference in power. Granted, they are a little smaller than the 38's but still, it wasn't even close. God forbid I try to tow anything.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by rvs9:
OC,

Where did you get your gears? </div></BLOCKQUOTE>

Got the gears from this place. http://www.accuautoparts.com/index.jsp

Was just under 700 for gears, pinion bearings and minor install kit. (MAKE SURE YOU GET RACES WITH THE PINION BEARINGS. read my post today http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=6...271025641#92710256 41 )