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Did Dak's ever come with rear disc brakes? If they did what years would fit on my 2000 Quad cab Sport? Would I have to change the existing brake lines and or the metering block?
Rear disc brakes???
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I want to change the whole rear end completely. Will there be any issues in the difference in the gearing from the four wheel drive to the R/T rear end?
I have been told that the RTs were 3.92 or 3.93 or there abouts. I'll see if I can look it up to be sure. Do you know what your ratio is? Because I would assume that if you mixed the ratios it would damage the transfer case if you ever put it in 4wd.
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The 2wd rear is not a direct bolt-in. The 4wd has the axle below the springs, the 2wd is on top, so the spring perches/ shock mounts are different, can be changed though. The late 1st gen Durango had rear disc brakes and in 4wd the spring perches would be correct.
The R/T was a 3.92 gear only. You will need to check your existing gearing, being a quad cab it just may have a 3.92.
The hard lines attached to the rear are specific to each type of brake system. If the lines are good on the sourced rear, use them. They both use a single flex line from the diff to the frame. The same master cyclinder can be used but there is a spring to remove from the distribution block.
I installed a 2wd 03 Dakota 8.25 disc rear into my 99 2wd. Somewhere between 99 and 03 the driveshaft connection on the differential changed. The 99 uses a one piece u-joint flange that bolts to the pinion, the 03 has a two piece u-joint flange. I installed my 99 u-joint flange on the 03 rear.
The R/T was a 3.92 gear only. You will need to check your existing gearing, being a quad cab it just may have a 3.92.
The hard lines attached to the rear are specific to each type of brake system. If the lines are good on the sourced rear, use them. They both use a single flex line from the diff to the frame. The same master cyclinder can be used but there is a spring to remove from the distribution block.
I installed a 2wd 03 Dakota 8.25 disc rear into my 99 2wd. Somewhere between 99 and 03 the driveshaft connection on the differential changed. The 99 uses a one piece u-joint flange that bolts to the pinion, the 03 has a two piece u-joint flange. I installed my 99 u-joint flange on the 03 rear.
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Why would the hard lines be specific to each type of system? If the routing changes then yes they are specific. But aside from that the tubing size and length does not affect the brake performance. Drum or disc brakes, both are similar pressure wise and neither are fluid flow dependent. Drum brakes may require more fluid flow to move the slave cylinder enough to push the brake shoes to the drums. The running clearance on disc brakes is maybe .030", so the caliper piston does not have to move out much.
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Have you looked at the two of them? This is what was stated and is accurate;
2004 dakota 4.7l cold air, cat back, 545rfe trans detroit locker on a 9.25 265/70r17
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112 Posts
As long as you match the gear ratios find a 4wd axle with disc brakes off a 2000-2004 dakota 2000-2003 durango. It will bolt on and function fine.
If the gear ratio isn't the same you can always swap out the ring and pinion.
If the gear ratio isn't the same you can always swap out the ring and pinion.
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I think my gear ratio is 3:55 in the rear. If it is what would be the effects of having a 392 (RT) rear end and the stock trans that came with my truck?
2004 dakota 4.7l cold air, cat back, 545rfe trans detroit locker on a 9.25 265/70r17
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112 Posts
If you put it in 4wd or have AWD you'll grenade the transfer case.
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Duly noted........ Note to self do not engage the four wheel drive that doesn't work. (I am Not being a smart ass with you @Zaan I promise ) I only have one CV axle up front (passenger side) Because the driver side went out and I dont have the money to replace it yet.
Yet another stupid question for you... If I just remove my whole front axle setup and go back to two wheel drive will that hurt anything? I dont even use the four wheel drive. Hell I can't remember the last time I took it off road or used the 4x4.
2004 dakota 4.7l cold air, cat back, 545rfe trans detroit locker on a 9.25 265/70r17
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No that won't hurt anything. Although the 4wd front diff is tied in with the engine mount. Might run into an issue there.
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