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Dman98

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Discussion starter · #1 ·
My Durango has 84,000 mile and it's time to change the tranny fluid. I don't have any problems with the tranny, I'm thinking about installing a shift kit. Do you think installing the kit will bring tranny problems since it has so many miles?
 
Who says they're not good for a higher mileage tranny? Mine probably had 60k when I put it in. I have 150 now.
 
A shift kit by it's design lessens slip and ups pressure inside the tranny for faster harder shifts. If anything, it should help it. If something is near breaking however, it may speed that up? but that would be a good thing. Then you rebuild, keeping the kit, and have a better than stock tranny that should last a long time.
 
It's a double edge sword of sorts.
Steve
DOC Pres
 
I had 55K on mine when I put mine in and have almost 100K now. Pass on the shift kit and get a good Martin Saine valve body from Fastman. Great improvement over stock as it completely changes the way the transmission operates.
 
Dman98 said:
My Durango has 84,000 mile and it's time to change the tranny fluid. I don't have any problems with the tranny, I'm thinking about installing a shift kit. Do you think installing the kit will bring tranny problems since it has so many miles?
A 98 with only 84,000 miles?? WOWZERS!! Mine has over 209,000 on it!! No major problems, although the heater core's been leaking a bit. We're waiting until I deploy to get it fixed so we don't have to worry about needing a back-up vehicle and so we can afford it since I don't have much time off (usually only 1 day a week) and have so much else to do. Now, if someone has the spare time, I'll provide tools, parts, room, board, meals and BEER!! Any takers??
 
I'll second the MS valve body. I did mine around 68K when I did the second fluid change and band adjustment. It made the D actually feel like it had shifts, instead of the mush that was previously there. He'll ask you what you do with your vehicle to get a better idea on how to setup your valve body. I hope to get at least 160-200k out of the stock transmission.
 
Discussion starter · #10 ·
SvynD said:
I'll second the MS valve body. I did mine around 68K when I did the second fluid change and band adjustment. It made the D actually feel like it had shifts, instead of the mush that was previously there. He'll ask you what you do with your vehicle to get a better idea on how to setup your valve body. I hope to get at least 160-200k out of the stock transmission.
Was it an install easy? I have to change my fluid and may go that route. Did anyone do a write up?
 
I had mine installed. Apparently it's not too difficult. Dan (Fastman) used to have the instructions on his site but they're not there any more. If you email him, he should be able to send them to you.
 
Neil said:
I had mine installed. Apparently it's not too difficult. Dan (Fastman) used to have the instructions on his site but they're not there any more. If you email him, he should be able to send them to you.
How much is this valve body you're talking about? I also would be interested. My 98 has a 5.2 with 117,000 on the clock and I'd prefer quicker shifts too. Maybe Dan could do a discount if more are interested? Uhh Dan? Are you out there?
 
The valve body doesn't replace the clutches and bands that are worn so, in my opinion, the valve body will do what the shift kit will do? just better. So it's the same risk! If the valve body makes it shift harder and firmer, the worn parts will still be worn and still suffer.
The MS VB is an incredible mod but not a tranny rebuild kit.
Steve
DOC Pres
 
Think of it this way: the reason a transmission wears is the friction discs that act as clutches when shifting gradually wear out. The factory realizes that 99.99% of the population wants smooth and comfortable performance from the transmission, so they lessen the pressure to engage these discs and thus taking longer and increasing clutch band wear. A reworked valve body changes the line pressure which increases the harshness of the shifts, but it's this firming up of the shifts which reduces the amount of time the friction discs are spinning against each other and wearing them down.

The install is easy, takes 1 1/2 hours and requires dropping the pan, unbolting the old and installing the new. The hardest part is getting some of the springs to line up inside. Then you have to solder a resistor inline with one of the wires in the harness and you're done.

If I remember, it was like $275-$300. Great improvement.
 
Easy straight forward installation. The only problem we found was getting the shifter arm tight on the transmission side after installing the VB? which wasn't a problem with the VB but in the design and space needed to tighten said bolt and nut.
 
Sooo maybe we can get Dan to help us do a group buy and then maybe do an install party? Just an idea? Nice spring weather in these parts of the country are around the corner and this could work. Just need a common place to meet up. What do you all think?
 
MS valvebody

I have about 50k miles on the Durango. I was wondering is this has a benefit other than shifting firmly. How or what was changed to the factory shifting? shift points? I already have a Superchips on the vehicle
Where to purchase this item and it loks like a simple install. Also I assume a fluid change and filter are in order. Does the bands need to be adjusted at this time and would that be a dealer only service?

I also get this code when I scan it. It doesn't turn on the check engine light - P1793
 
The tighter and faster the tranny shifts lessens the amount of wear to the clutches in the tranny, extending the life of the tranny. It's also cool when you get 2nd gear chirps going down the road without really mashing the loud pedal.
 
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