Hossbaby50
3/4 ton status
I have done it. I would run 4.88's with 35's & 5.13's with anything taller expected. If you don't do alot of highway then 5.13's all the way.
Harley
Harley
CK5
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Running 4.56s, with 35"ers, and a 700r4 ** What about 37s?
- Thread starter NEK5
- Start date
NEK5
3/4 ton status
Thats tough though, because about 70% percent of my on road driving is highway...Hossbaby50 said:
Mr.Jimmy
Registered Member
4.88 is your best bet, if you do highway driving with 5.13's youll probubly be running like 3200 to 3500 rpm at 65mph.
Hossbaby50
3/4 ton status
BIGBLAZE433 said:
If you have a good healthy motor then 4.56's might be ok but I would go with 4.88's. If I had it to do over I would have done 4.88's at least. I used to drive mine on the highway alot too.
When I first did my axle swap I had 32" tires w/4.56's gears and it was GREAT!!!. Then I put the 35's on and it was just ok. Now I have 37" tires & I really wish I had a little more gear.
Here are some numbers for you. 35" tires (34" actual height) @ 70 MPH in OD.
4.56's = 2208 RPM
4.88's = 2363 RPM
5.13's = 2484 RPM
2484 RPM is a good RPM for being in a good powerband while cruising. It may not net the best mileage but it should still net some pretty good mileage. The only downside is when you kickdown to climb hills the RPMs get a little high. But if you plan to run tires bigger then 35" then it won't matter when you upgrade. You will hate yourself if you go with 4.56's & go up to 37-38" tires.
Harley
lochenjons
1/2 ton status
That's almost the setup I'm about to have. But with a th350. I had 33"s with 4.56s for the longest time that was a pain, can't wait to put my 35"s on
4.56 because you can find a set of axles ready to go. 4.88 requires regearing and the difference is small in rpm's. if you go bigger in the future then you can regear to 5.13.
you will be very happy with 4.56 and 35's. you know 33's are too small.
you will be very happy with 4.56 and 35's. you know 33's are too small.
NEK5
3/4 ton status
ok, but with a not so healthy motor, am i looking at problems...
As of right now, it burns some oil, and gets a knock ( i think a gas knock ) once in a blue moon....
As of right now, it burns some oil, and gets a knock ( i think a gas knock ) once in a blue moon....
Hossbaby50
3/4 ton status
Healthy in terms of power. If you are running a motor with some upgrades & extra grunt you might be able to get away with less gear. If your motor is not powerful then you might want to get some extra gear to help it get some more grunt going down the road.
Harley
Harley
NEK5
3/4 ton status
what about a 241?Tominator II said:
NEK5
3/4 ton status
So, by less gear, you would mean? (little too tired to thinkHossbaby50 said:
)
Hossbaby50
3/4 ton status
numberically lower. 4.56 is less then 4.88. 4.88 is less then 5.13.
A 241 has a deeper lowrange like a 208.
Harley
A 241 has a deeper lowrange like a 208.
Harley
BIGBLAZE433 said:
the current condition of your motor has nothing to do with what is going to work best and is the easiest to find. Eventually you are going to need a new engine no matter what gears you put in it. find some axles with matching gears in the 4.10 or 4.56 range and bolt them in. don't bother with gear swaps right now. get the motor rebuilt or buy a crate motor.
If you were to find a set of axles with 3.73 or numerically lower gears then would be the time to put in 4.88 or 5.13 gears. but if you find the RIGHT set they will have 4.56 and be plenty for 35's. then IF you go bigger in the future regear them.
Leper
1/2 ton status
4.56 IMO is the perfect gear for 35s. Are 35s you long term tire size? Something to think about. I now run 39.5 Pitbul Rockers with 4.56 gears and it is still ok, I just can't use overdrive anymore. When I regear, I will go 5.13 because of the tire size. If you stay with 35s or even go to 37s you will be fine with the 4.56. Like said earlier, with the easy possibility of finding 4.56 geared axles, go with that. If you find some 4.10 axles they will be fine also.
FYI..... Whan I was running 35s, I was running 3.08 stock 10 bolts. No balls off the line, but in 4low on a 241, I still had fun.
FYI..... Whan I was running 35s, I was running 3.08 stock 10 bolts. No balls off the line, but in 4low on a 241, I still had fun.
pauly383
Daddy383
BIGBLAZE433 said:Whose doing it???
If you are, and like it, tell me why. If you are, and don`t like it, tell me why. If you`re not, and want to, tell me why. If you aren`t, and would never do such a thing, tell me why.
Why = Because I had the gears in the garage , and I am NOT finishing the truggy , just doing a single Blazer and going forward with that until I have to tube it .
Like or dislike = Love it , I am not going back to anything else .
Why I like it = 2wd is so useable now on the trail , on the faster parts where I left it in 4 hi or 4 lo , I leave it in 2wd now . Wheeling is much more controllable too . I have to use less gas pedal to finesse it .
I swear it now , I am never going to go back to anything lower in a wheeler . The bigger the tire , the lower the gears need to be
NEK5
3/4 ton status
Well, to be honest, I was fine with the 33sLeper said:
. They may not be the biggest, and can definitely get you stuck (ask me how i know ), but they make it fun. But, since I will already be in the market for better tires, I figured, sinced the price difference wasnt outrageous, why not go up a little, thus my decision on getting 35s.So, yes, 35s will be my long term tire size (at least until i get my moneys worth)
Well, this is whats making my decision hard. I already found a set of 3/4 ton axles with 4.10s....But I just can convince myself they are usable, as it seems that 4.56s are perfect for this situation....
What are the downsides to running 4.10s????
Confedneck79K30
3/4 ton status
a little less nut off the line and a little less LOW low range, but i ran 3.42s with 33s and a 465/208 and it was fine, my buddy runs 33s with 3.73s and a 700/208 and his rocks! so 4.10s will work, but 4.56s would be even lower
I've got that set up but with 4.10s. At an indivated 70mph I'm actually doing 65mph. At 30mph I'm actually doing 29 so it's similar to my stock set up with 31s.BIGBLAZE433 said:Whose doing it???
If you are, and like it, tell me why. If you are, and don`t like it, tell me why. If you`re not, and want to, tell me why. If you aren`t, and would never do such a thing, tell me why.
With hind sight I would DEFINATELY have gone with 4.56s
Tominator II
1/2 ton status
Here is an insanely complete calculator. check it out.
http://www.grimmjeeper.com/gears.html
Later, Tom N
http://www.grimmjeeper.com/gears.html
Later, Tom N
bowtiepower00
1/2 ton status
It appears that you really have no idea what direction your build is going- not that many of us do. If you know, for certain, that 35's are the biggest that you will ever go, then 4.56's would be adequate. However, if you are like the majority of people on here, and/or you get a Dana 60 up front, you will go to bigger tires in the future. Then your 4.56's won't cut it. It's one thing to run 4.56 with large tires and NO OD, but when you have the 700, running too high of gears leads to premature tranny failure. Many of the people who aren't running enough gear are the same ones that talk about how weak and pathetic the 700 is, when in reality, when built and used right they are a decent transmission for a non-HD application. If you run into a set of 4.56 geared axles, then it will be a decent ratio, but, if you are going to regear, I'd suggest 5.13's. Go to the RPM calcs and run the numbers, figure out how fast you like to drive, drive your truck around and look at your tach while doing it. Compare that to the RPM you get in the calcs and figure out what gearing you want. If you are never going to run tires bigger than 35's then 4.56's will be OK. However, if you are never going to run tires bigger than 35's I would not run a Dana 60, the added size will hang up in the mud and on other obsticles. For 700 equipped vehicles I'd suggest 4.56 with 33's, 4.88 with 35's, and 5.13's for 37's and taller. ORD appears to have 5.38's now available too for the FF, for those with real big tires. Way too many guys regear to 4.56 and then end up regearing again to 5.13 after the bug bites 'em and they build even bigger. 4.10's will be adequate temporarily, especially if you keep the trans out of OD.
NEK5
3/4 ton status
Why wouldnt it be good to go into OD with 4.10s?
