Front Diff Worthless

[Prairie Dog]

Wow, thats news to me too. Where can I get one? Maybe we can do a group buy?



Scotty

 

[JHardwick]

Actually, $1800 shipped...



And several of us figured at TODAY'S fuel prices, it would take less than 100k to pay it off and start seeing a benefit... not to mention the reduced wear and tear on those components and added pleasure to drive.



It isn't a conversion for someone worried about pinching pennies after paying for a $40k truck they don't plan to keep for more than 12k miles.



steved

I was thinking $2500 for some reason, that thread is old though



I'm guessing most trucks do 15mpg, and if the lockouts got them 16mpg @ todays average of $2. 60/gal, it's gonna take 166,000 miles to pay for it self. Most people won't even own their truck that long, but like I said previously, there is a whole thread on this topic.

 

[JJuday]

One thing I learned from the knowledge pool on this site is the trick of applying a small amount of preasure from the parking break. This causes both axle shafts to maintain load-up and receive torque.

 

[SOLER]

I stand corrected. I was wondering if AAM switched, I guess now I know. I will say that both my 2000 and '01. 5 (Dana axles) and my '04 (AAM axles) behave the same in and out of 4x4. My '07 is a 1500 with IFS, and it acts a little different only because when is does crow hop, it isn't as bruital as a HD 2500 or 3500 with straight axle in front.

 

[CStraface]

The front diff. is not a locker. It`s an open diff. and will spin one wheel at a time. It will switch left to right depending on traction. It`s the weak link of stock 4x4`s.

Our trucks are 1x1 without a limited slip rear diff :--) and 3x1 with the LSD. It will also be limited as far as lockup on the rear diff with LSD. :{ Not designed for true off roding.

To get a real 4x4 you need a locker diff.

Locker`s on the street are hard on the drive train unless you can turn it on and off. . There is a front diff. locker carrier for $569. 00 dollars you can install. It has an electrical lock control so you can turn it on and off.

As for the rear, if you have a limited slip it should be good enough for recovery and off-roding with the front locker.

So what about this front locker? Where? How much? If ya got anymore info, I can think of about 20,000 happy CTD owners who would be all ears!!

 

[steved]

So what about this front locker? Where? How much? If ya got anymore info, I can think of about 20,000 happy CTD owners who would be all ears!!

Umm, they make both a electrac and ARB for the 9. 25AAM... Randy's R&P quoted both a price for me about a year ago...



I could care less about the front, the rear is what I want to lock.



steved

 

[steved]

I was thinking $2500 for some reason, that thread is old though



I'm guessing most trucks do 15mpg, and if the lockouts got them 16mpg @ todays average of $2. 60/gal, it's gonna take 166,000 miles to pay for it self. Most people won't even own their truck that long, but like I said previously, there is a whole thread on this topic.

Most 3rd gens see closer to 3 mpg... I have went from a high of 17mpg to being able to squeek out close to 23mpg... the DT kit was my biggest part of that gain.



steved

 

[CStraface]

Yeah well I have gone from 18 to 15's. Injectors or the switch from mostly highway driving to just about all city stop and go driving?????

 

[steved]

Yeah well I have gone from 18 to 15's. Injectors or the switch from mostly highway driving to just about all city stop and go driving?????

I drop like that in stop and go city... all that starting (acceleration) kills mileage...



steved

 

[CStraface]

Yeah thats what I am thinking. Out of a 400 mile tank, 3/4 of the miles are city. The remainder 1/4 highway. This is a complete opposite of what my commute back in California was... . 3/4 highway, 1/4 city.

 

[JHardwick]

Most 3rd gens see closer to 3 mpg... I have went from a high of 17mpg to being able to squeek out close to 23mpg... the DT kit was my biggest part of that gain.



steved

I don't see a 3mpg gain, I'd have to see that under controlled circumstances to believe it. Too many 20-25 mpg claims on the board already.

 

[DrDiesel]

The one I found was at www.justdifferentials.com

$569. 00 for the carrier less harness and switch.

Install your ring gear and wire it.

Jasons #425-609-1090

 

[Hercules130]

I couldn't find anything for the 9. 25 on either website.

 

[Prairie Dog]

The one I found was at www.justdifferentials.com

$569. 00 for the carrier less harness and switch.

Install your ring gear and wire it.

Jasons #425-609-1090

Either the locker or the LSD would work for my needs. How hard is it to install this? Do you have to set up the gears?

 

[Big P]

I bet it wasn't fully engaged into 4x4. There should have been atleast 1 wheel spinning. I know my truck has popped out of 4 wheel before. I pulled the lever, 4x4 lit up on the dash, but it wasn't pulling in the snow like it should. I gave the lever one more tug, and it locked in.

 

[steved]

I don't see a 3mpg gain, I'd have to see that under controlled circumstances to believe it. Too many 20-25 mpg claims on the board already.

Stated just like someone that is looking to justify NOT spending that kind of cash... if you need justification to buy it, then you really don't want it. I could care less about the added mileage, that is just a bonus.



This is the typical argument/statement made by the non-believers/non-owners.



steved

 

[JHardwick]

Stated just like someone that is looking to justify NOT spending that kind of cash... if you need justification to buy it, then you really don't want it. I could care less about the added mileage, that is just a bonus.



This is the typical argument/statement made by the non-believers/non-owners.



steved

Look, I'm not trying to get under your skin here, K? If your happy with your lockouts, then I'm happy for you, K?

 

[fkovalski]

Stated just like someone that is looking to justify NOT spending that kind of cash... if you need justification to buy it, then you really don't want it. I could care less about the added mileage, that is just a bonus.



This is the typical argument/statement made by the non-believers/non-owners.

Look, I'm not trying to get under your skin here, K? If your happy with your lockouts, then I'm happy for you, K?

People, people... let's get back to the topic at hand... Craig- you wash yer truck yet? :-laf :-laf :-laf

 

[steved]

Look, I'm not trying to get under your skin here, K? If your happy with your lockouts, then I'm happy for you, K?

I was just making a point, I didn't buy mine for mileage, so I have no need to inflate mileage reports... especially since I have them wrote down and hand calc'd. I bought it to get rid of the 3rd gen vibrations common in some of the early 3rd gens... $1800 was a cheap solution. It was my only solution and the fuel mileage gains was just an added bonus.



And besides, if you run a full detroit in the front, you almost would need locking hubs... but I guess that's not an issue since we don't have a full detroit for EITHER end yet... I'm not a fan of selectable lockers... the diffs are hard enough to work on, then to add something that has moving parts that could potentially fail...



steved

 

[CRuth]

One thing I learned from the knowledge pool on this site is the trick of applying a small amount of preasure from the parking break. This causes both axle shafts to maintain load-up and receive torque.

We used to call that okie posi. Cost me $800 to fix my jeep after trying that. It wasn't up to the added torque.