Thanks guys, I can't wait...I just wish I could tackle this one myself...I hate paying someone to do something half as well as I would, if I had the proper tools. I think going from 3.55 open to 4.10 l/s will be quite the experience, esp. with these heavy wheels / tires and the short-throw 5-speed goodness. ManualF150, are you running the Hurst unit? Reason I ask, Hurst told me that they (B&M) are going to discontinue it. Makes me want to pickup a second one just in case.

 

Nope...

Really?! Damn... I should get my hands on one...

The 4.10s with l/s is like driving a new truck.

Literally you can leave the truck in 4th while making slow turns into a road.

 

How is taking off from a dead stop in 2nd.?

I thought you had an older V6...but I see your profile says 07. I didn't think the M5OD was an option after 03???

 

Up to 03, it was standard on the 4.2 and 4.6. In 04, I think it was only available on the Heritage 4.2, don't know about the 4.6, but I know it was not available on the NBS. I believe in 05 they put it back in the 4.2 standard cab 4x2 only.

I can take off easily in 2nd with mine with 3.55's.

 

When I had 3.55's the truck was very laggy.

I felt like I had to drive it like a car and really wind it out in each gear.

Now it drives like a truck should.

 

I am thinking of going with 35's also. Most people say to go with the 4.56 over the 4.10 but no one has said what the MPG will be between the two. What will get you the best MPG?

 

I am thinking of going with 35's also. Most people say to go with the 4.56 over the 4.10 but no one has said what the MPG will be between the two. What will get you the best MPG? Also what would the MPG be if I left the stock 3.73's in?

 

What kind of MPG are you guys getting with 35's and 4.56 or 4.10 and 3.73?

 

35's and 3.73's are fine. several members have gone as far as to run 37's on 3.73, Josiah, Thumper, etc. if you have 3.73's and still want to regear, i would go w/ at least a 4.56. they don't make a 4.30 ratio for both axles, which would be ideal. 4.10's would only be a marginal upgrade, and not worth the hassle/ expense. i have 3.55's, and am looking at 4.56's. 4.10's would get me back to the stock 3.73, however, I tend to have a desire for more power, and have decided to go w/ the 4.56's. my mileage certainly can't get much worse, at 10-11mpg in a 5.4 LS 4x4 w/ stock tune, full exhaust, and a lead foot.

 

I've been getting 22 mpg average with a light foot.