I've got a 2003 Dodge Dakota Quad Cab Sport 4x4 with the 4.7L in it.

So once all the snow melts around here I'm planning on putting a 3" body lift kit on my truck and throwing on some larger tires.

I was told that with the 3" body lift the largest size I tire I would be able to run would be a 34 x 12.0 x 16.

Is this correct? I'm trying to get all my information straight before I start buying stuff.

Also, I would like to change the gear ratio in my front and rear diffs so I don't completely kill my power and gas mileage.

Currently I have 245/60R16's with a 3.55 gear ratio.
I'm thinking with the 34 x 12.0 x16 tires (about a 305/75R16) I would need somewhere between a 4.10 and a 4.30.
My math is a bit fuzzy..so I'm looking for some help figuring out what gear ratio I need to be putting In.

And my FINAL question...
Where the heck do I find gears for the front diff?
I can find loads of them online for the REAR...but not the front.

Thank's in advance for all your help!
I have been browsing this forum for the last year or so, just got around to making an account today.

 

check here for the calculations and the have the parts for the front diff too but i would go with the 4.10s
http://www.ringpinion.com/Calculators.aspx

 

Oh Man!
Thanks! I'll check into that tonight.
I've literally been researching it on my own for about a month now and come up with nothing.

Now, the other thing I had gave up on. Is there anyplace that makes a suspension lift kit for the 03 Dakota? Or am I right that my only option is pretty much the 3" body lift?

 

yeah the only options are the 3" body lift and the torision bar and shackle lift you will get 2" out of that with 8 turns on the torsion bars check out this link
https://dodgeforum.com/forum/2nd-gen...ion-ideas.html

 

They make/or made a 3" suspension lift but it was around $1500. Most people that seriously lift a Dakota do a SAS.

 

an sas would be 1500 or more to do plus fabricating

 

I would go with 4.56 gears 4.10 is going to be a bit low still

 

Thanks!
I'm probably going to go with the 4.56s gears.
According to my math I would need a 4.30ish to keep the same ratio with the new tires..
So, having only 4.10 and 4.56 as my choices..I'm assuming 4.56 would be best for not loosing power and keeping decent-ish gas mileage?

ALSO, Ive been searching ebay for those 305/75R16's... I guess that's not a common size because I cant find any. BUT. I can find lots of 315/75R16's. Which are 35 inch tires instead of 34 inch tires. Would those still fit on my truck with a 3inch body lift?
OR, how would I go about figuring it out on my own?

 

I think if you do a 3in body lift and crank your torsion bars you should be able to fit 35's with some trimming to the front bumper.

 

chassis tech offers a 4.5 and a 6 inch suspension lift. let me know if you try it i'm interested myself.