want to run 33s

[steve4x4townsend]

can anybody give me some advice ? wanting to run 33s on my 2005 sport trac but dont want to buy expensive lift what are my options and is this to bbig of a tire that i will lose alot of power????

 

[LONO100]

http://www.explorerforum.com/forums/showthread.php?t=329062

this should help. let me know if you have any more questions. good luck!

 

[steve4x4townsend]

thanks for the info after reading that and seeing what was done i think im goin to go with a 3 inch body and tt to be sure and clear the 33s do to i live in rough country were its a every day thing to flex your truck so i need max room to move .... did the 33s rob it of power or ability to pull a load ?

 

[Kazer]

Depends on your gearing. I ran 33's on my truck with the 4.0 and 3.55 gears. Acceleration was bogged down and pulling a chord of wood in a 12' trailer was absolutely ridiculous, pedal to the floor from a dead stop and id creep forward like a dying horse

 

[LONO100]

look up what kind of gearing you have in the diff. im lucky in the fact that i have 4.10's, but even with the 4.10's having the 33"s has me planning on moving up to 4.56's. after a lot of reading and some good convo with fellow members with the same set up, 4.56's seem to be the optimal gearing with these tracs when running 33" tires.

 

[Pickupman_69]

what goes into regearing to 4:56 and do you have to match the front?

 

[MidnightRebel07]

Pickupman, you have to have matching gears F/R on a 4wd/ AWD.

 

[LONO100]

you def have to match the front or you will throw your whole drivetrain off. you will need a ring and pinion set, 2 matching sets to be exact. make sure you are looking at sets that fit ford 8.8 10 bolt diffs. i have been looking around and there are about 220 bucks plus tax on most sites, but i recently found a set on ebay for 145 with free shipping. im currently looking into these, but im a little hesitant to buy gears from ebay until someone else on the forum can share any advice on it. my next project was going to be a set of lights on my roof rack for the winter, but now its my mission to get 4.56's to get the power i lost back.

 

[Kazer]

Open your drivers door and find the 2 character code listed under axle type or axle code.

42 = 4.10 open differential
45 = 3.55 open differential
46 = 3.73 open differential
D2 = 4.10 limited slip
D4 = 3.73 limited slip
D5 = 3.55 limited slip

 

[Clusterpup]

you def have to match the front or you will throw your whole drivetrain off. you will need a ring and pinion set, 2 matching sets to be exact. make sure you are looking at sets that fit ford 8.8 10 bolt diffs. i have been looking around and there are about 220 bucks plus tax on most sites, but i recently found a set on ebay for 145 with free shipping. im currently looking into these, but im a little hesitant to buy gears from ebay until someone else on the forum can share any advice on it. my next project was going to be a set of lights on my roof rack for the winter, but now its my mission to get 4.56's to get the power i lost back.

The front diff is not a Ford 8.8, it's some kind of Dana, a 35 I think I'm just not positive off the top of my head the exact model.

 

[OffTrac]

Dana 35 is correct.

 

[shooterdude199]

when you get gears, may as well get lockers while you got the diffs all opened up

 

[steve4x4townsend]

thanks for all the info not wanting to do a gear swap rite now so i guess ill start by seeing what gears i have and go from there do to i drive tyhis every day and live in a moutain regoin

 

[JohnnyO]

If it has 4.10's you could live with it.

 

[LONO100]

4.10's with 33"s are def ok to run, im running that right now, and its not too bad, but like a said, some 4.56's would be the ticket!

 

[04trac]

4.10's with 33"s are def ok to run, im running that right now, and its not too bad, but like a said, some 4.56's would be the ticket!

I'm door code 42 (4.10 Open Diff) right now with 33"s, TT, and body lift and i can definitely tell a difference in acceleration. It's not there. I'll definitely be eyeballing a set of 4.56s sometime in the near future!

 

[JohnnyO]

If you move up to 33's then you need 4.56 gears to keep the rpm vs. road speed about the same as stock.