2nd Gen Non-Engine/Transmission trading 4.1 gear for 3.54

[dodgeram1998.5]

i have a 98 3500 dually with 4. 1 axle in the chicagoland area looking for someone in the area with a 3. 54 anyone available ? i just dont pull heavy enough loads and really am not in to pulling 2500 rpms with 29. 5 inch tires @70mph on the highway.

 

[DDT]

I hope you find two while your looking. I wish mine had tall gears to.

DDT

 

[bkroupa]

You can get about 1/2 the rpm drop of 3. 54's by switching to 255/85's.

Once I found out I'd need a different carrier to make the change, I decided to go to a taller tire t drop the rpms's roughly 10%

 

[BKenny]

I went to 285s on mine and it still revs pretty good on the freeway . So evetialy i plan to either change gears,lift it and run bigger tires or get a Gear Venders overdrive. I called Gear venders and it runs around 3 grand for the set up . Im not sure how much it would cost to swap gears labor parts ext.

 

[Tom L]

Change gear sets

I was quoted $1500 from the Dealer where I bought mine. I wanted to go from 3:54 to 3:73 with 4:10 as a last ditch. ended up buying a different model with the 4:10, I still would prefer 3:90 with the 02 engine, the 3:73 was offered in the more powerfull 03 engines. I have 2. 65R 75s and average 17mpg at 70mph/2200rpm freeway driving. TL

 

[Partyat33]

Man, I don't know how you guys with the 4. 10's do it. I have the 3. 54 and with they were even lower !!!



Good luck on the gear swap. Welcome to the TDR.

 

[DanWilson]

Ditto that. I've got 3. 55 and wish I had 3. 43 or so, 'cause I sure as heck can't afford an OD transmission.

 

[Chipstien]

I wouldn't give up my 4. 10's even if someone were to offer me 1000 bucks plus their 3. 55 gears. I run 35's and this is by far the best setup for those with autos. 70 mph at 2000 rpms. Puuurfect.

 

[sparks57]

I've been crunching numbers for a while and found that 3. 90 is best for 315's (35" tires) with the auto.



3. 73 makes the truck run close to 3. 55 with 33" tires, which I'm running now, and it's just a little too high... and 3. 90 makes 'em run like 3. 55 with stock 265 tires, which I liked.



Now if I could just figure out if I need to change carriers to put 3. 90's in?

 

[kah68]

I have an 01 3500 with 3:54's would like to have 4:10's since i tow heavy all the time at max speed of 65. Made a huge mistake ordering 3:54's. Ontario here.

 

[kah68]

I have an 01 3500 with 3:54's would like to have 4:10's since i tow heavy all the time at max speed of 65. Made a huge mistake ordering 3:54's. Ontario here.

 

[Tom L]

Ring and Pinion Gear Change

I was considering going to a 3:90 as opposed to my 4:10 and called several gear specialty Dealers to find out the particulars. If memorey serves me the two have to be replaced as a set as the ring gear is made much thicker than the 3:55, but the carrier would be usable as is. I run 265/75R and 70 mph is 2175 rpms. Going to a taller tire would for sure drop the rpm's as was posted earlier and help in economy mileage. $1500. 00 is the going price it seems for hiring out the change over. TL

 

[mjoppie]

i would love to have some 4. 10's for my 95. i have some 38" swampers on it and i think the 4. 10's would be more street friendly, i love the gears in it now but just for a mix up i want to try 4. 10's, the only pita is changing them. i dont know how to do it so theres a problem on my end (setting pinion depth and what not) if your intrested im about 30mins south of lansing in michigan.





matt



ps on my work truck in looking for some gears lower than 3. 54's sompthing closer to 3. 00 lots of highway traveling, dont want to buy gear vendors.

 

[bmoeller]

I have the 3. 54 and with they were even lower !!!

Do you wish they were 4. 10's?



Lower gears are numerically higher, ie, 4. 10 is lower than 3. 54. Lower= slower.

 

[Bloomy]

I have a 95 that I would like to swap out the 4. 10's. I think with the amount of power I have now and am planning to add that is the way to go. It revs very high at highway speeds. Never got serious due to price and I haven't ever done any differential work. I run taller tires than stock (only 265's) would go taller but need the 'E' rating and didn't want to drop the money on the bigger "E's".



Thomas

 

[RobertMiller1]

same carrier

The same carrier is used for 4. 10 down to 3. 54



Above 4. 10 requires a different carrier.

 

[therabbittree]

with carrier do you mean the whole axle or do you mean the portion of the diff that teh ring gear bolts on to?. . ie can you keep the external axle housings from 3. 07 past 4. 10s?. . and just change the diff carrier portions?etc... I have 3. 07s in my 89 i'd like em in a newer truck though my dads 02 revs with 410s. . and my buddys 6spd 01 revs with 410s if you have the hp and torque i'd think lower then 355 would be nice. . how low of a ratio can you fit ina 2nd gen axle?

Thanks

Deo

 

[Tom L]

The Carrier

I beleive the 89's used the 60 series axle housing where the 2nd gen uses the 70 so you may have to research it more. The above post explains it clearly on the ring and pinion changes that can be made by using the same "carrier", that is the assy that holds the ring gear, but if you do not have limited slip it may be a diff carrier, again check with gear dealers on this. I would think with a hi performance application as you have the hi speed ratios. . 3:55 down to 3:07 might be ok for light hauling. Call Joint Clutch and Gear, 989-686-2924, Bay City, Michigan. They helped me with the necessary info. Also it is a "must have" to provide the axle housing ID numbers that are either stamped in the housing or on a tag bolted to the axle inspection housing cover. Having this number gets instant parts help. TL

 

[therabbittree]

well my '89 is 1 ton single wheel . . it has a dana 60 front and a dana 70 rear. no limited slips. I thought thought the 2nd gens used dana 80 hybrid rears. . ie carrier from a dana 80 but dan 70 tubes or something of the sort.

 

[Tom L]

89 D350

I was thinking my 89 350 has a 60, its 2wd, guess I could be wrong and it is a 70, again checking with a parts house as previously mentioned would be a wise move... TL