3.27 open to 3.73 ls worth it ?

[frstxplorer]

I just put a set of yoko geolanders 32x11.5 on my 93' man did that affect the gearing 1st was always kinda tall but now its like startin in second i have 2 sets of 3.73 ls axles on a couple of x's out back just wonderin if the time to swap them over for the amount of change will be worth it or should i just wait till i can afford 4.11's any and all oppinions would be awsome

 

[big_hoovie]

It depends. Do you intend to go wheeling with you X? If not, then the 3.73 should be fine, but if you do want to go wheeling, you will eventually want larger tires, going to a 4.10 gearing(I don't think 4.11 is avail for the TTB D35) would be more beneficial to you, so you don't outgrow your gearset too quickly.

 

[Maniak]

If you aren't driving on the north side of 80mph in your truck all the time, I'd say go with 4.10's. We use 4.10s on our '92 with 32x11.50 (soon to be 33's).

Driving at 70-75 with 4.10's is just fine.. even 80 is ok.. and the rpms are still well under 3000.

Also, the cost of 4.10's vrs 3.73 gears should be about the same..

~Mark

 

[frstxplorer]

It depends. Do you intend to go wheeling with you X? If not, then the 3.73 should be fine, but if you do want to go wheeling, you will eventually want larger tires, going to a 4.10 gearing(I don't think 4.11 is avail for the TTB D35) would be more beneficial to you, so you don't outgrow your gearset too quickly.

yea i do plan on wheelin it more so than i do now kinda limited between the gearing and no lift yet only reason i was considering the 3.73's was cause they wont cost me a dime just time to pull the axles out of the 2 x's and swap them

 

[frstxplorer]

If you aren't driving on the north side of 80mph in your truck all the time, I'd say go with 4.10's. We use 4.10s on our '92 with 32x11.50 (soon to be 33's).

Driving at 70-75 with 4.10's is just fine.. even 80 is ok.. and the rpms are still well under 3000.

Also, the cost of 4.10's vrs 3.73 gears should be about the same..

~Mark

yea ive learned to stay on the south side of 80 costs to damn much to go more.. do you have any problems with the low end power with the 4.10's or is it pleanty to get you through pretty much any thing?

 

[hiridin]

do you have any problems with the low end power with the 4.10's or is it pleanty to get you through pretty much any thing?

no 4.10's aren't enough to get u through any thing. 4.10's are barely enough for 32's and flat out aren't enough for 33's. maybe for strictly onroad but it sounds like u want to use it ofroad. 4.56's and 32's is like 5.13's and 35's. thats a good combo . and u can easily run 33's when u decide to move up. i assume u have a manual tranny so there will be nothing wrong with that set up. thats what i advise u to do. if yer going to gear it incorrectly (4.10's) u might as well put yer 3.73's in cuz atleast then it costs u nothing. i'm not saying it would be impossible to use 4.10's. u could make it work. but i think u'd be dissapointed with the results and all the money u blew to get it that way.

 

[frstxplorer]

thanks man guess i'll hold off and wait till i can get 4.56's and you think thatll be ok even if i go to 33's. im sure im gonna go bigger as soon as i start lifting the thing.

 

[410Fortune]

the jump from 3.27 to 3.73 is DEFINATELY not worth it.
If you plan to wheel with 33's go 4.56

However the choice between 4.10 and 4.56 for 33's is up to you based mostly where you will be driving the truck, what engine/transmission/ and transfer case you have, etc.

The 4.0L OHV I used to have did not like 4500 RPM, in fact anything over 3500 is pretty much screaming for that engine. So 4.56 gears + 80 mph would put me in this range in my BII with an auto trans. this to me was not what I wanted, since I like to drive across states to go wheeling.
I went with 4.10

now with the SOHC 4.0L that engine doesnt mind 4500 rpm so much,

You can see where I am going with this.
It is up to you, but you can do some research to figure your final drive ratio and your engine's factory powerband.

4.56 + 33= good combo, especailly if you ever plan to go bigger.
But it may not be for everyone.
5 speeds typically have more control over gear selection so its easier to get away with a steeper ratio.

When splitting hairs it is personal preference.

I made the jump from 3.73 to 4.10 and if I could do it over again I would have gone 4.56...

 

[Maniak]

the 4.0 ohv with it low end torque using 32's and 4.10 has been great.. I can't think of a time that I didn't have enough torque to get up something when in low range with an automatic. With a manual, it is possible that the 4.10 might not be enough (I have no experince with that, so I can't say).. btw.. a4ld + xfercase in low + 4.10 comes out to be 25:1 crawl ratio ratio.. and with an automatic you get torque multiplication which makes it even higher...

As 410 said, it depends on what you have to drive.. Until recently, the explorer was a daily driver.. I had to be able to drive on a freeway (speed limit 75) for 40+ miles a day.. 4.56 with 32's would be too much.. With 33's it would be ok.. But I am just now going to 33's.. that would have been 3 years with 32's and 4.56 which would have just been too long..

IMO.. If you have to drive on the freeway much... and 32's are as big as your going, I'd say go with 4.10.. But if you are going to go bigger, get the gears nows (4.56) since its about $1300 to change them again..

~Mark

 

[hiridin]

With a manual, it is possible that the 4.10 might not be enough (I have no experince with that, so I can't say)..
~Mark

thats what i'm saying... 4.10's and a manual with the ohv don't really like anything bigger than 31's. and with a manual running a lower gear ratio won't be as big a problem as far as rpm's and gas goes. cuz u'll be running quite a bit lower than a automatic would. i'm basing this on the fact that 4.56's and 35's with a manual in the ohv sucked big time. 5.13's got me where i want to be. 4.56's with 32's/33's is somewheres close to 5.13's and 35's except 33's and 4.56's won't be quite as low. either way it means a good combo imo. thats where i'm coming from on this... if yer even considering moving to 33's later 4.56's should be yer choice. cuz its still plenty doable running 4.56's and 32's. its a little on the low side but so is 5.13's and 35's. with our manual tranny and ohv motor its needed though.

 

[frstxplorer]

thanks guys for all the input i started calling some shops for priceing (we dont do gears at my shop was gonna try it but one of my techs. said it is a HUGE deal so now im not sure) i got a price of 3500 to go to 4.56 and posi rear think its kinda high thanks~ drew~

 

[DeRocha]

Regearing is typically around $1K for new gears and labor... $3.5K is way too high...

 

[Maniak]

That sounds way too high.. I can't imagine 4.56 costs that much more than 4.10s..

We had front/rear 4.10s installed and a full detroit rear locker.. Total cost was $1800.. and $500 or so of that was the cost of the locker..

~Mark

 

[metstalker]

i bought used gears from a guy on here. for 75 dollars and regeared for about 400 dollars with the master install set. i went from 3.08 to 3.75 on a 31 inch tire it will be enough for your 32s its actually too much for my 31s and mine is mostly a street explorer anyway

 

[stevewes2004]

I wheel with 32s and 3.27s and in low range it does fine.

 

[wattsgame]

stevewes im with you i got 32's with 3.73 in a 92 sport and other than sucky gas milage 11.75 mpg i find it a very capable set up. on the low side of the transfer i can spin all four with no problem in rocky terain. not to say i would want to get any bigger tires with this set up but it works well with what i got. my 2 cents

 

[97XEB]

Already been covered, but I agree with those who say don't waste your time and money on the 3.73s.

I've got a 97 4.0 SOHC with 285/75R16 SSRs (33s that were much closer to 34s when new) and 4.10s have been fine for me on, and off road - and I can be pretty heavy with the right foot.

Like 410 said, its really your choice as to whether you run 4.10s or 4.56s, but 4.10s should be the minimum. Engine and trans have a lot to do with the decision.

I will say that if you are even thinking about going bigger than 33s in the future, definitely go with the 4.56s and cry once.

 

[TNR]

Interesting....

If you aren't driving on the north side of 80mph in your truck all the time, I'd say go with 4.10's. We use 4.10s on our '92 with 32x11.50 (soon to be 33's).

Driving at 70-75 with 4.10's is just fine.. even 80 is ok.. and the rpms are still well under 3000.

Also, the cost of 4.10's vrs 3.73 gears should be about the same..

~Mark

Mark, let me butt into this with a related question, I have a 91 XLT with lowly 275/35 r15's, this seemingly gives me a 5mph variable on my speedo.. even taking that into account (50=55, 55=60, 60=65 etc..) when Im on the highway doing 65 or so my rpm's are somewhere around 2900.. Is that average for the truck, (because it sure makes bad mileage even worse)

I'm wondering if someone didn't change out the rear end or mess with the ratios somehow before I got the truck.. if they might have, is there a way to find out?

(also, from an etiquette standpoint, if I see something pertinent that relates to a problem I'm having, is it ok here to quote in like this or should I default to starting a new thread, pinging the person who might be able to help?)

 

[hiridin]

Mark, let me butt into this with a related question, I have a 91 XLT with lowly 275/35 r15's, this seemingly gives me a 5mph variable on my speedo.. even taking that into account (50=55, 55=60, 60=65 etc..) when Im on the highway doing 65 or so my rpm's are somewhere around 2900.. Is that average for the truck, (because it sure makes bad mileage even worse)

I'm wondering if someone didn't change out the rear end or mess with the ratios somehow before I got the truck.. if they might have, is there a way to find out?

(also, from an etiquette standpoint, if I see something pertinent that relates to a problem I'm having, is it ok here to quote in like this or should I default to starting a new thread, pinging the person who might be able to help?)

i would think u should probably start yer own thread. really jus depends if the person minds or not. usually safer to not hijack someones thread. on that note... 2900 seems too high to me. are u not in overdrive or something? 3.73's and a 28"-29" tire without overdrive will be about 2800-2900rpms. with it it should go down quite a bit more. even if u had 4.10 gears it should be at 2700rpms or so in overdrive it might even be lower than that. u would have to have 4.56 gears and a 29" tire to be around 2900rpm's in overdrive at 65mph. unless i'm missing something....

 

[Maniak]

Assuming you really have 275/35r15 tires.. Which are actually 22.6" tall... 2900 rpms may be correct..

assuming .78:1 for top gear (.75 for a4ld, .78 for 5 speed manual)...

3000 rpms with a Rear Diff of 4.10 with a trans gear ratio of .78 and transfer case in high range (1:1) would be 63mph...
3000 rpms with a rear diff ratio of 3.73 and all else above being the same would be 69mph...

Now, if you really have 235x75r15 which is a 28" tall tire.....
3000 rpms with a rear diff of 4.10, trans gear ratio of .78 and transfer case in high range (1:1) would be 78.2mph...
the same with 3.73 would be 85.9mph..
the same with 4.56 woudl be 70.3mph

BUT, if your not going into OD (assuming an auto tranny).. you would have the following..
3000 rpms, 4.10 gears 28" tire-->61mph
3000 rpms, 3.73 gears 28" tire --> 67mph
3000 rpms 3.27 gears 28" tire --> 76.5mph
I did not figure it for 22" tires since I doubt thats what you really have (and the speed would be mucher lower than for the 28" tire)..

Soo, in short.. It looks like your are either not going into OD, or lockup is not working (with an auto tranny).. If your a manual tranny, You would have to have 4.56 gears (which is not an available stock gear ratio)

BTW.. to help figure the numbers I used http://www.4lo.com/calc/gearratio.htm I filled in the tire diameter, diff ratio, rpms, and set the transmission ratio to either .78 (for od) for 1 (for no od and the transfercase ratio to 1 (high range).

~Mark