Gearing

[Kurtis]

I have a 85 fj60 and have 33" tires with the stock gearing. I'm really considering soa and have a question about gearing.
With the 3.73 and 33's it really doesn't do to bad it cruises ok on the highway and is fine on the trails.
When I get 35s I know that 3.73 is going to be to much.

Are 4.11s alright for 35s? Would this be close to the same ratio as 33s and 3.73s?


do 80 series gears work in a 60? do 62 gears work? What other toyota gears work?

One last question, This might be a dumb one but does it matter what size gears with the arb locker?


Thanks

 

[lehiguy]

If you switched to 4.10s with the 33s, you would wonder why you didn't do it sooner. I ran 35s with 4.10s for a while and I didn't like it. I went to 4.56 with the 35" BFGs and that's with a v8. I can't imagine trying to turn 35s with 3.70 gears and a 2F.

 

[PPFJ60]

I was thinking about 4.56's but went with the 4.88's and I am glad I did. I have 36" tires, 383 V8 and a 700R4. Plenty of gears for the highway but I wish I had a lower gear for trails.

 

[mountain cruiser]

I run 4.88's on 35's and love it now, after going to mark's low range t-case gears, and I have a strong running 3FE. The stock motors are gutless compared to a V-8, so you need to ask around for those that have a 2F or 3FE, and what size gears they are running, as a V-8 would still work fine with 4.11's and 35's (it has 2x more power than a 2F) What kind of wheeling/driving will you be doing, how much of either?

 

[REKCUT]

Here is a helpful chat on gears and speed.

gear chart

 

[Trapper50cal]

How big a

I run 4.88's on 35's and love it now, after going to mark's low range t-case gears, and I have a strong running 3FE. The stock motors are gutless compared to a V-8, so you need to ask around for those that have a 2F or 3FE, and what size gears they are running, as a V-8 would still work fine with 4.11's and 35's (it has 2x more power than a 2F) What kind of wheeling/driving will you be doing, how much of either?

How big of a deal was it to install those t-case gears? I've got 4:11's and 35's with a bone stock 2F and I bog on the steep stuff and was looking real hard at those t-case gears to help crawlin. BTW, comin' to Durango?

 

[lehiguy]

How big of a deal was it to install those t-case gears? I've got 4:11's and 35's with a bone stock 2F and I bog on the steep stuff and was looking real hard at those t-case gears to help crawlin. BTW, comin' to Durango?

For the three miserable weeks during which I drove a stock 2F, I had the same issue; it would just power out and die. I did a desmog/Weber/header thing and the problem was just a bad memory.

 

[Ducks]

I have a 85 fj60 and have 33" tires with the stock gearing. I'm really considering soa and have a question about gearing.
With the 3.73 and 33's it really doesn't do to bad it cruises ok on the highway and is fine on the trails.
When I get 35s I know that 3.73 is going to be to much.

Are 4.11s alright for 35s? Would this be close to the same ratio as 33s and 3.73s?


do 80 series gears work in a 60? do 62 gears work? What other toyota gears work?

One last question, This might be a dumb one but does it matter what size gears with the arb locker?


Thanks

I currently have a stock 2F & 3.73 with 35s. I am going to get 4.11s from a 62 to upgrade. You can drive around town with 3.73s thanks to low end torque. Cruises fine on the highway. Not recommending it just saying that it can be done for a bit until you locate 4.11s. It doesn't matter for the ARB lockers. If 33s and 3.73 don't bother you than 4.11s and 35s won't bother you. 80s gears don't work in a 60.

 

[Ducks]

Random thought - you could also change your transmission to an h41. I almost did that but ran out of funds.

 

[lovetoski]

I have a 85 fj60 and have 33" tires with the stock gearing. I'm really considering soa and have a question about gearing.
With the 3.73 and 33's it really doesn't do to bad it cruises ok on the highway and is fine on the trails.
When I get 35s I know that 3.73 is going to be to much.

Are 4.11s alright for 35s? Would this be close to the same ratio as 33s and 3.73s?


do 80 series gears work in a 60? do 62 gears work? What other toyota gears work?

One last question, This might be a dumb one but does it matter what size gears with the arb locker?


Thanks

A couple of things:

1. Going to 4.10's will get you back to stock gearing with your 33's.
2. To get the same as stock with 35's, you'll need 4.56 gears.
3. If you go SOA, 35's are the smallest tire you'll want.
4. If 3.73 and 33's are fine for you now, then 4.10 and 35's will give you the same gearing.
5. However, going to 35's (regardless of SOA or not) will improve your off-road capability, and that by itself will almost certainly motivate you towards lower gears.
6. 80 series rear diffs swap right into a 60. The front is smaller.
7. I'm pretty sure the ARB can handle any of the 60 series gear options, but you could talk to Kurt @ cruiseroutfitters or to ARB USA to find out for sure.
8. Lots of threads on here about gearing...(and SOA). Suggest some reading...

Hope this helps.

 

[Kurtis]

Thanks, Sounds like 4.11 will work but 4.56 might be better.
As it is right now I wheel it pretty hard buts without the locker its pretty much peddle to the floor on the big climbs so I don't notice the gearing so much. With the locker I'll probably be crawling more and want the 4.56 gears.

with 4.56 and 35s whats the rpms like at 70?
I end up driving it quite a bit on the highway also so just want to make sure I'll still be able to do at least 70 when I'm done.
iS Cruiser outfitters a good place to get gears if I buy new? I figured the 4.11s would be easier to pick up used and a little less money since the 80s and 62s had them I could be wrong though.

 

[Trapper50cal]

!!

Thanks, Sounds like 4.11 will work but 4.56 might be better.
As it is right now I wheel it pretty hard buts without the locker its pretty much peddle to the floor on the big climbs so I don't notice the gearing so much. With the locker I'll probably be crawling more and want the 4.56 gears.

with 4.56 and 35s whats the rpms like at 70?
I end up driving it quite a bit on the highway also so just want to make sure I'll still be able to do at least 70 when I'm done.
iS Cruiser outfitters a good place to get gears if I buy new? I figured the 4.11s would be easier to pick up used and a little less money since the 80s and 62s had them I could be wrong though.

70mph ...that's funny....

you'll be wrappin 3200-3400 at 70 with 4.56's/35's (actual redline and beyond) is my guess. My rig with 4:11's might get to 70 on a nice ozone-y cool day

 

[Kurtis]

As it is now it'l hit 75 at just about 3000-3100 with the gps.
Is your spedo corrected?
If thats the case i'll probably look for 4.11s and check into the tcase gear swapping. That sounds like a pretty good trade off keep the highway speed and crawl better offroad.

 

[Kurtis]

Check that I just saw the tcase gear price and that changed my mind a little haha.

 

[Trapper50cal]

yeah but

As it is now it'l hit 75 at just about 3000-3100 with the gps.
Is your spedo corrected?
If thats the case i'll probably look for 4.11s and check into the tcase gear swapping. That sounds like a pretty good trade off keep the highway speed and crawl better offroad.

Thats the benefit of taller gears, more top speed. the amount over stock of the tires further heightens those 3.73's.

That's why I like those t-case gears...7-8% overdrive in 2H and 55% more reduction in 4L but you still need the power. with an increase on the overdrive side, unless I am incorrect, it effectively makes it like taller gears for 2H. I think they also make a no overdrive/55% reduction 4L version

 

[NocalFJ60]

This should help. I can show you more options if they are not there.

https://forum.ih8mud.com/60-series-wagons/224318-rpm.html

If you want to drive it on the highway and cruise, I would go with 4.56's and 35's with the stock 4 speed. The 4.88's will be nice on the trail but look at your top speed on the link above here.

 

[Trapper50cal]

yeah

Check that I just saw the tcase gear price and that changed my mind a little haha.

Yeah, they are spendy, but you have to look at the overall expense of the project, w/ those t-case gears you don't have to get new driveshafts or crossmembers as you would with a doubler/toybox etc. or a 5speed (assuming pre-85) all drivetrain stays the same.

 

[Cruiserdrew]

Just for the record, 4.10 gears from an 80 series rear, will work fine in vintage Cruisers, and with all the people going to 4.88s in 80 series, the 4.10 surplus gears will be a great deal. I've seen them for $50 a set. You'll never beat that for Toyota factory gearing.

80 series gears are slightly different. Traditional Cruisers are 9 x 37 (4.11) and 80 series are 10 x41 (4.10). Those ratios are close enough to mix and match. The 80 series fronts are completely different, so forget those.

The best way to think about gears, is to match to your tire size. 33s work well with 4.11s, 35s with 4.56, and 37s with 4.88. Pick your tires and work backwards to keep your truck drivable. That's a general rule, but not far off.

Gear work is expensive, so be sure about what you want before you change out the factory gears.