crawl ratio

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[rich]

Is that a sm420,dana20 and 4:27 axles ?

[mika401]

Yup it could benefit from a 3.15 TeraLow kit in the Dana20, maybe someday (95:1) 

[jerry k]

thats exactly what i want to do in my cj..3:1 in my d-20.
i'm only around 40:1 right now..but i do find the wheel speed on new england trails to be beneficial. i think the torque of the 360 helps out a bit too..

[Ian]

ax-5            3.93
atlas 5.0:1       5.00
60/14b            4.56
                     89.604     
         

[Axle]

I'm 54.81 is that decent?   if I go to 4.10s it would be 67.89 w/4.56s 75.51  hmmm

[jeepgod]

I'm 54.81 is that decent?  if I go to 4.10s it would be 67.89 w/4.56s 75.51  hmmm

for new england type four wheeling your ratio is "ok"  generally the ideal ratio for a stick is 80 to 1 and higher.  my old cj was 89 to 1 and i loved it.

if you are going to swap gears (and this is what i tell everyone who is into 4 wheeling) get the lowest gears you can possibly run. you will loose top end speed but not enough to matter

[jerry k]

todd your cj crawls nice..once i drove it i realized how much more control you have going that slow. i'd like to be around that range in my cj. hopefully this winter i will add the 3:1, it's either that or i regear. my rear ring and pinion are beat anyway, i might consider re-gearing both axles. i'm not sure if i can just get away with just gearing the axles to gain the lowrange i want. any suggestions ?
-jerry

[jeepgod]

todd your cj crawls nice..once i drove it i realized how much more control you have going that slow. i'd like to be around that range in my cj. hopefully this winter i will add the 3:1, it's either that or i regear. my rear ring and pinion are beat anyway, i might consider re-gearing both axles. i'm not sure if i can just get away with just gearing the axles to gain the lowrange i want. any suggestions ?
-jerry

regear the axles, 5.38 i always told lucas he was to high

the t-case regear is cheaper but you will be wanting more

[navman 5.0]

So i figured I would follow up on this after doing it. I ended up going with a 5.14 gear ratio. I immediately noticed a big improvement on the dry rocks when I was at gretchens, but also found it to be a little low on the slick stuff when we were at swanzey. I'm going to need a little time to figure out just when to use what gear, but at least now I have the option. Now I need to get that suck down winch done.

[Ian]

so that gives you a 93.39:1 crawl ratio?

[navman 5.0]

Yes and a 46..... in second.

[rich]

One thing people forget when talking about  crawl ratio is what engine you have and where it makes it's torque. My 258 makes crazy low end but redlined a 3000 rpm so wheelspeed is kinda lacking but my 2 nd gear is around 60 to 1