I want to do 4:10 gears to replace my 3:55.I only have 33" tires and do a good bit of interstate time.What I need to know is where are most folks getting the parts for this install?What info as far as axles do I need to know/find out before I call and place an order.Any parts list available so I get all the parts I need?

Its an 07 4x4 by the way.

 

speed shops do it all the time so i just went to a local one in town and i got a insane deal . i got 4.56 instead of 4.10s and im running 32 inch tires

 

What is your top speed? On my 2004... I can't recall my old tire size, i think 30-31s. I had 4.56s and 3rd gear @ 5700 rpm was 110mph.

 

117 mph

 

im locked at 99 mph :S

 

doesnt nitto say that anything over 93 MPH on their mud graps is dangerous? i wouldnt want to go any faster then 117.

and why are we worried about top speed on a truck?

 

Man 117 on 37's would be interesting! But I have to admit I almost exceeded my tires speed rating the other day. Getting on the interstate and it was empty so I laid it down and when I looked the speedo was whizzing by 100 a lot faster than I would have expected. Guess the VMP tunes get addictive.

Bronkx1,
I think you just need to tell them the axle is a Ford 9.75 (if you have a 5.4) can't remember if the 4.6's run 8.8 or 9.75 out back and if you have limited slip. You could buy the gears offline doing a search (Precision gear is a good one) or find a trusted local shop and they will set you up. I think there are certain levels of install kits that are needed.

 

calculates are greathttp://www.angelfire.com/fl/procrastination/rear.html

 

I'm not even sure of the speed rating. It was only at 117 for a second and than right back down to 75 mph. The speed ratings are on the safe side thats for sure. You can exceed them, I just wouldn't hold that speed for a while.

Edit: The more I think about it. I think it was 107 mph.

 

With the jet-skis on the back right ?

 

Unlock it with your diablo

 

Duh. .

 

Where in Pa are you. I suggest "big foot on and off road" in New Kensington Pa

 

Randys ring and pinion is where I looked first.They dont ask about engines just year.It shows 9.75 as the rear and an 8.8 in front.They have 4.11 ring and pinion for $255 a set.

 

i got my gears here cheap

http://www.nationaldrivetrain.com/

119 so far i wish i could go to one of those dried lake beds and just go for miles...