stock gears for my 98 XJ

ok 4.0 XJ limited with auto and NP242 , and trailer package ... on my rear it says " 35" on one tag and "1408 " on the other ... so someoen translate please

Dana 35 and probably has 3.54 or 3.55,its all stock right?

i guess ... I know people hate gear threads but this is more of a "what my tag means" on my trail buggy it was pretty simple one tag said D60 the other 4.56 LOL ..... this 1408 thing baffels me

I would say probably just a cereal #,I dont think any thing that special,open it up and see if anything looks different

HogWash said:

Dana 35 and probably has 3.54 or 3.55,its all stock right?

Click to expand...

Are there two completely different ratios 3.54 and 3.55?
I have seen axles marked 3.55. Is there such a thing as 3.54?
During parts search I find Jeep axles listed as 3.54 or 3.55.
My Dana 3.55 has 11 pinion teeth and 39 ring teeth which makes it 3.545454
What's the pinion/ring tooth count for a 3.54?

falcon556 said:

Are there two completely different ratios 3.54 and 3.55?
I have seen axles marked 3.55. Is there such a thing as 3.54?
During parts search I find Jeep axles listed as 3.54 or 3.55.
My Dana 3.55 has 11 pinion teeth and 39 ring teeth which makes it 3.545454
What's the pinion/ring tooth count for a 3.54?

Click to expand...

i just found a cherokee Dana44 in a local junkyard today and picked it up for $150. when i read the gear tag, it said 3.54.

3.54.....3.55........basically the same thing if i 'm correct.

scorpio_vette said:

i just found a cherokee Dana44 in a local junkyard today and picked it up for $150. when i read the gear tag, it said 3.54.

3.54.....3.55........basically the same thing if i 'm correct.

Click to expand...

Do me a favor, if you happen to open the cover, count the teeth.
Thanks.

http://www.naxja.org/forum/showthread.php?t=94637

appears to be 46:13

3.54 and 3.55 are very close but not identical.
The effect might be the same as uneven tires I think.

falcon556 said:

3.54 and 3.55 are very close but not identical.
The effect might be the same as uneven tires I think.

Click to expand...

Dont be too sure. Sequoia and Capt. Ron blew up a t-case simply because of that gear ratio being off just that much...


:roll:

red91inWA said:

Dont be too sure. Sequoia and Capt. Ron blew up a t-case simply because of that gear ratio being off just that much...


:roll:

Click to expand...

What gear ratio did they have?
A dana 35 3.55 means 3.545 (39/11)
A dana 44 3.54 means 3.538 (46/13)
I wonder what the Dana 44 3.55 is.

FYI: The parts guide shows a Dana 35 with a 3.55 (not 3.54). There are other gear ratios as well.

Saudade said:

FYI: The parts guide shows a Dana 35 with a 3.55 (not 3.54). There are other gear ratios as well.

Click to expand...

Right, it is the Dana 44 that shows both 3.54 and 3.55.
The previous numbers came when I divided the #of ring gear teeth by the pinion.

falcon556 said:

Are there two completely different ratios 3.54 and 3.55?
I have seen axles marked 3.55. Is there such a thing as 3.54?
During parts search I find Jeep axles listed as 3.54 or 3.55.
My Dana 3.55 has 11 pinion teeth and 39 ring teeth which makes it 3.545454
What's the pinion/ring tooth count for a 3.54?

Click to expand...

Ya I know it sounds weird to say when I found mine it was yes.........dana 44 w/3.54 gears pretty much the same thing:wierd:

falcon556 said:

Are there two completely different ratios 3.54 and 3.55?
I have seen axles marked 3.55. Is there such a thing as 3.54?
During parts search I find Jeep axles listed as 3.54 or 3.55.
My Dana 3.55 has 11 pinion teeth and 39 ring teeth which makes it 3.545454
What's the pinion/ring tooth count for aYa I know it

Click to expand...

sounds weird to say when I found mine it was yes.........dana 44 w/3.54 gears pretty much the same thing:wierd:

red91inWA said:

Dont be too sure. Sequoia and Capt. Ron blew up a t-case simply because of that gear ratio being off just that much...


:roll:

Click to expand...

Whoever told them that was full of crap unless the tire sizes were different too! 10 lbs of air pressure can make that much difference from front to back! You can run up to .04 ratio difference w/o a prob on the street. More if you only run 4x4 offroad. Jeeps came 3.54 D30 front and 3.55 D35 or D44 rear.

Proof positive that common sense is not.

Proof positive that common sense is not.

red91inWA said:

Dont be too sure. Sequoia and Capt. Ron blew up a t-case simply because of that gear ratio being off just that much...


:roll:

Click to expand...

I don't believe that one bit. 3.54 to 3.55 is near dead on. I know many people including myself that run 5.38/5.43 gears with no problems. As long as you are below a 4% difference you are fine, the smaller the better obviously. This is common with running a Dana and another axle such as a Ford 9" or Toyota 8". I think those guys had other problems such as a stretched chain etc.

Axles

Front Axles
Dana 30 high pinion - reverse cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear - used 84-99 (some axles through 91 are vacuum disconnect, 92+ are non-disconnect, 89-95 with ABS have 5-297x u-joints, all 95+ have 5-297x u-joints, all others have 5-260x u-joints)

Dana 30 low pinion - standard cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear, 5-297x u-joints - used 00-01

Rear Axles
(Note on Dana 35 axles sometimes referred to as Dana 35C - The "C" does not stand for c-clip. It stands for "custom" meaning it came from Dana unfinished.)
(Note on 8.25 axles - none of these axles were used on XJs with ABS brakes. If you have ABS, you have the Dana 35. Without ABS you could have either axle. 8.25 axles are c-clip)

Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 84-89
Dana 35 c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 90-01
Chrysler 8.25 - 27 spline, 1.17" diameter shafts, 8.25" ring gear, 3" axle tube - used 91-96
Chrysler 8.25 - 29 spline, 1.21" diameter shafts, 8.25" ring gear, 3" axle tube - used 97-01
Dana 44 non c-clip - 30 spline, 1.31" diameter shafts, 8.5" ring gear, 2.75" axle tube - used 87-89 on some(not all) XJs equipped with towing package.
Gearing

3.07 - used with 4.0L engine / manual transmission
3.31 - only available on older (pre87?) 2 door XJs with "Fuel Economy" package
3.55 - used with 4.0L engine / automatic transmission
3.73 - found in some XJs with the towing package
4.10 - used with 2.5L engine usually, and older XJs with the "Off-Highway Vehicle" package.
4.56 - rare but can be found on some older (~ 89 ~) models with 2.5L engine and auto transmission