Limited Slips in Both Axles or Lock the Rear???

Guest · **Posted:** Mon Jan 05, 2009 2:08 am

2mopar_diesels wrote:

The low-end torque of the CRD will pull the 265/70-16 tires fine.

This is probably the exact reason JL Rockies had 4.10s installed in his KJ

tommudd · **Posted:** Mon Jan 05, 2009 2:36 am

ThunderbirdJunkie wrote:

2mopar_diesels wrote:

The low-end torque of the CRD will pull the 265/70-16 tires fine.

This is probably the exact reason JL Rockies had 4.10s installed in his KJ

and the reason why every big rig in America runs the same gear ratio , :wink:

it may pull it just fine with the 265-70s but ....oh well never mind been there and discussed it before

2mopar_diesels · **Posted:** Mon Jan 05, 2009 1:13 pm

jsc7002 wrote:

2mopar_diesels wrote:

No, won't be doing a gear change. The low-end torque of the CRD will pull the 265/70-16 tires fine. I'm just using them cause they are laying around the house left over from my 5.9 Limited ZJ that was wrecked a few months ago. Thought about selling them and using what I get to help purchase new 235/75-16's. Anyways, looks like I will just add a DTT to the front and be done with it. Then, when the factory rear LSD clutches wear out, I'll pop for an ARB. By the way, just to make sure, the front end of these KJ's are the same D30 diffs and gears as all the others right???

no the KK front diff does but not the KJ

the p/n for the DTT is 912A314-DETROIT TRUETRAC DANA 30 - 27 SPL 3.73 & UP

Man, are you sure that's right??? I made a few calls, went to several vendor sites along with Eaton's and that part# doesn't exist. pn#DET912A585 and the race bias pn#DET912404 are the only D30 listing anyone has. Need to know 100% b4 ordering.

jsc7002 · **Posted:** Mon Jan 05, 2009 3:04 pm

http://www.justdifferentials.com/index. ... 8b753297bd

tjkj2002 · **Posted:** Mon Jan 05, 2009 4:29 pm

2mopar_diesels wrote:

jsc7002 wrote:

2mopar_diesels wrote:

No, won't be doing a gear change. The low-end torque of the CRD will pull the 265/70-16 tires fine. I'm just using them cause they are laying around the house left over from my 5.9 Limited ZJ that was wrecked a few months ago. Thought about selling them and using what I get to help purchase new 235/75-16's. Anyways, looks like I will just add a DTT to the front and be done with it. Then, when the factory rear LSD clutches wear out, I'll pop for an ARB. By the way, just to make sure, the front end of these KJ's are the same D30 diffs and gears as all the others right???

no the KK front diff does but not the KJ

the p/n for the DTT is 912A314-DETROIT TRUETRAC DANA 30 - 27 SPL 3.73 & UP

Man, are you sure that's right??? I made a few calls, went to several vendor sites along with Eaton's and that part# doesn't exist. pn#DET912A585 and the race bias pn#DET912404 are the only D30 listing anyone has. Need to know 100% b4 ordering.

The correct part # for the "correct" DTT for our D30A's is DET912A585,that is the exact one that I installed in my D30A.

jsc7002 · **Posted:** Mon Jan 05, 2009 4:38 pm

tjkj2002 wrote:

2mopar_diesels wrote:

jsc7002 wrote:

2mopar_diesels wrote:

No, won't be doing a gear change. The low-end torque of the CRD will pull the 265/70-16 tires fine. I'm just using them cause they are laying around the house left over from my 5.9 Limited ZJ that was wrecked a few months ago. Thought about selling them and using what I get to help purchase new 235/75-16's. Anyways, looks like I will just add a DTT to the front and be done with it. Then, when the factory rear LSD clutches wear out, I'll pop for an ARB. By the way, just to make sure, the front end of these KJ's are the same D30 diffs and gears as all the others right???

no the KK front diff does but not the KJ

the p/n for the DTT is 912A314-DETROIT TRUETRAC DANA 30 - 27 SPL 3.73 & UP

Man, are you sure that's right??? I made a few calls, went to several vendor sites along with Eaton's and that part# doesn't exist. pn#DET912A585 and the race bias pn#DET912404 are the only D30 listing anyone has. Need to know 100% b4 ordering.

The correct part # for the "correct" DTT for our D30A's is DET912A585,that is the exact one that I installed in my D30A.

why are those two p/n's different??

they are both for the D30 front only, 3.73 and up, 27 Spline

tjkj2002 · **Posted:** Mon Jan 05, 2009 4:43 pm

jsc7002 wrote:

tjkj2002 wrote:

2mopar_diesels wrote:

jsc7002 wrote:

2mopar_diesels wrote:

No, won't be doing a gear change. The low-end torque of the CRD will pull the 265/70-16 tires fine. I'm just using them cause they are laying around the house left over from my 5.9 Limited ZJ that was wrecked a few months ago. Thought about selling them and using what I get to help purchase new 235/75-16's. Anyways, looks like I will just add a DTT to the front and be done with it. Then, when the factory rear LSD clutches wear out, I'll pop for an ARB. By the way, just to make sure, the front end of these KJ's are the same D30 diffs and gears as all the others right???

no the KK front diff does but not the KJ

the p/n for the DTT is 912A314-DETROIT TRUETRAC DANA 30 - 27 SPL 3.73 & UP

Man, are you sure that's right??? I made a few calls, went to several vendor sites along with Eaton's and that part# doesn't exist. pn#DET912A585 and the race bias pn#DET912404 are the only D30 listing anyone has. Need to know 100% b4 ordering.

The correct part # for the "correct" DTT for our D30A's is DET912A585,that is the exact one that I installed in my D30A.

why are those two p/n's different??

they are both for the D30 front only, 3.73 and up, 27 Spline

912A314=D30 3.73 gears and up---OLD STYLE 2 worm gear DTT
912A585=D30 3.73 gears and up---NEW STYLE 3 worm gear DTT(stronger)

jsc7002 · **Posted:** Mon Jan 05, 2009 4:56 pm

oh ok, they arent still making the old style are they??

tjkj2002 · **Posted:** Mon Jan 05, 2009 4:57 pm

jsc7002 wrote:

oh ok, they arent still making the old style are they??

No but places may still have them on the self.

2mopar_diesels · **Posted:** Mon Jan 05, 2009 9:26 pm

You see, I know I joined thise site for a good reason!!!!! Thanks guys! Thought I was going crazy for a moment.

Fulltimer · **Posted:** Mon Jan 05, 2009 9:55 pm

I wouldn't mess with buying a 12v compressor for an ARB. Get a small bottle of CO2 instead. The only time air pressure is needed is when it first engages and not again until you turn it off. Just a little pffft of CO2. I have a 25 pound tank but I carry an air wrench for the tires and also use it to fill tires. $12.00 to refill it when it empties.

Terry

Limited Slips in Both Axles or Lock the Rear???

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