transmission mod
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Rookie
Joined: Nov 2007
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From: KY
transmission mod
ok i was reading on another forum i think it was DOC and they were talking about the transmission mod where with the 01 durango's you can actually get a 5th gear with swapping the transmission module from a grand Cherokee i think it was.
anyone know anything else about this?
anyone know anything else about this?
All Star
Joined: Jul 2008
Posts: 882
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From: Lebanon, IN
I have heard of this but not really understanding how you can get a 5th gear out of a 4 gear transmission. no matter how you look at it converter lockup is not a gear.
I could be wrong though, just don't understand how it is possible.
I could be wrong though, just don't understand how it is possible.
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Rookie
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From: KY
ttt i thought hydrashocker was one of the people on that forum talknig about it also
http://www.durangoclub.com/forum/vie...r=asc&start=30
http://www.durangoclub.com/forum/vie...r=asc&start=30
Hall Of Fame
Joined: Jun 2005
Posts: 14,228
Likes: 19
From: Riverton, UT
Hydra weighs in:
This is a lock up torque converter issue as previously stated and accomplished by removing torque management which is a well know subject. This is a subject is clearly the #2 package of performance but to do this flash one must have proper equipment to run it like a M1 intake and located here: http://www.bgperformancepcm.com/#magnum This is only removal of torque management and not a new set of gearing. One would need to replace the transmission to a 45RFE with a bell housing conversion and PCM conversion that is NOT made making a conversion at this time impossible.
This PCM upgrade is designed for vehicles that have installed the M1 manifold.
Revised premium fuel & timing tables
Shift point raised to 5400 rpm
Rev limit raised to 6000 rpm
Torque management removed
Speed limit raised 130 mph
</H3>
This is a lock up torque converter issue as previously stated and accomplished by removing torque management which is a well know subject. This is a subject is clearly the #2 package of performance but to do this flash one must have proper equipment to run it like a M1 intake and located here: http://www.bgperformancepcm.com/#magnum This is only removal of torque management and not a new set of gearing. One would need to replace the transmission to a 45RFE with a bell housing conversion and PCM conversion that is NOT made making a conversion at this time impossible.
<H3>B&G M1 Truck Flash (92-95 SBEC) (96-03 JTEC) - $350 flashed PCM or Flashed into Handheld ($650) includes shipping (Ground) (*)
This PCM upgrade is designed for vehicles that have installed the M1 manifold.
Revised premium fuel & timing tables
Shift point raised to 5400 rpm
Rev limit raised to 6000 rpm
Torque management removed
Speed limit raised 130 mph
All Star
Joined: Jul 2008
Posts: 882
Likes: 3
From: Lebanon, IN
Hydra weighs in:
This is a lock up torque converter issue as previously stated and accomplished by removing torque management which is a well know subject. This is a subject is clearly the #2 package of performance but to do this flash one must have proper equipment to run it like a M1 intake and located here: http://www.bgperformancepcm.com/#magnum This is only removal of torque management and not a new set of gearing. One would need to replace the transmission to a 45RFE with a bell housing conversion and PCM conversion that is NOT made making a conversion at this time impossible.
[B]</H3>
This is a lock up torque converter issue as previously stated and accomplished by removing torque management which is a well know subject. This is a subject is clearly the #2 package of performance but to do this flash one must have proper equipment to run it like a M1 intake and located here: http://www.bgperformancepcm.com/#magnum This is only removal of torque management and not a new set of gearing. One would need to replace the transmission to a 45RFE with a bell housing conversion and PCM conversion that is NOT made making a conversion at this time impossible.
[B]</H3>
Champion
Joined: Jun 2006
Posts: 4,822
Likes: 4
From: Indiana
Errrr. Wrong answer.
M1s work with 5.9s and 5.2s.
TCMs work with 4.7s.
5.9s and 5.2s don't use TCMs
Swapping the correct TCM on the correct 4.7 gets you a fifth gear. The DOC thread is written by Dan the Fastman and he knows a thing or two about Mopar motors.
There is no M1 and never have been an M1 that works with ANY 4.7l that would remotely be a candidate for a TCM 5th gear mod swap.
The above is simply wrong data and mixed metaphors. Sorry HS, you have the concepts incorrectly mixed up and not consistent with the initial question in this thread. Swap the TCM on the 4.7 and gain a 5th gear is NOT the same as removing the torque management from a transmission mated to 5.9. This post asks about one and the info you provided on the B&G flash deals with the other.
IndyDurango
M1s work with 5.9s and 5.2s.
TCMs work with 4.7s.
5.9s and 5.2s don't use TCMs
Swapping the correct TCM on the correct 4.7 gets you a fifth gear. The DOC thread is written by Dan the Fastman and he knows a thing or two about Mopar motors.
There is no M1 and never have been an M1 that works with ANY 4.7l that would remotely be a candidate for a TCM 5th gear mod swap.
The above is simply wrong data and mixed metaphors. Sorry HS, you have the concepts incorrectly mixed up and not consistent with the initial question in this thread. Swap the TCM on the 4.7 and gain a 5th gear is NOT the same as removing the torque management from a transmission mated to 5.9. This post asks about one and the info you provided on the B&G flash deals with the other.
IndyDurango
Last edited by IndyDurango; Sep 7, 2009 at 02:31 AM.
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Joined: Jun 2005
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From: Riverton, UT
Never said they the 4.7L took a M1 but was using the 5.9L as a refference point.
The tow button locks out the torque management and does the same thing. Now your trying to tell me that a 45RFE trany (which is only made in 5 speed) and is accompanied with the 4.7L work horse can gain a extra gear making a 5 speed out of a 5 speed trany (hmmmm) by placing a different TCM in?????? You can't simply install a different brain onto a persons body and gain an extra leg when there are only 2 legs.
This is clearly the removal of torque management hints the "The claims of firmer, better shifting with a 300 to 400 drop in the RPM with better fuel mileage" by messing up the signals/inputs and if you had a modified valve body and shift kit installed you could see this.
The tow button locks out the torque management and does the same thing. Now your trying to tell me that a 45RFE trany (which is only made in 5 speed) and is accompanied with the 4.7L work horse can gain a extra gear making a 5 speed out of a 5 speed trany (hmmmm) by placing a different TCM in?????? You can't simply install a different brain onto a persons body and gain an extra leg when there are only 2 legs.
This is clearly the removal of torque management hints the "The claims of firmer, better shifting with a 300 to 400 drop in the RPM with better fuel mileage" by messing up the signals/inputs and if you had a modified valve body and shift kit installed you could see this.
Last edited by hydrashocker; Sep 7, 2009 at 04:14 PM.
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Hall Of Fame
Joined: Jun 2005
Posts: 14,228
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From: Riverton, UT
I am proud to do say I was reading and found that there are 2 overdrive gears. And considering that this trans (45RFE) could be used for the 5-45RFE. https://dodgeforum.com/forum/dodge-r...e-5-45rfe.html
Now from everything I've read the 6th gearing for the 545RFE wasn't included in the building of the 45FRE. http://en.wikipedia.org/wiki/Chrysler_RFE_transmission
Now from everything I've read the 6th gearing for the 545RFE wasn't included in the building of the 45FRE. http://en.wikipedia.org/wiki/Chrysler_RFE_transmission
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Rookie
Joined: Nov 2007
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From: KY
so was the thread i found correct? if i add that other transmission mod i would gain the extra OD aka get the 5th gear?
or did i simply read that incorrectly? im still trying to gather which trans is actually in my durango
or did i simply read that incorrectly? im still trying to gather which trans is actually in my durango
Champion
Joined: Jun 2006
Posts: 4,822
Likes: 4
From: Indiana
Yes it's correct. The mechanics are already in there. The trans is eletronically controlled. If the Transmission Control Module doesn't tell it to use the top gear, it doesn't. Jeeps used it, Durangos didn't based on the signals they were sent. Same trans is most situations.
Dan the Fastman spelled out which units work and which don't as well as what to do if you want it pretty clearly in the thread you linked to. This upgrade is for 01 and 02 4.7 Dodges with a separate TCM (Transmission Control Module) If your 4.7 vehicle's PCM (Power Control Module) has 3 lugs this is for you. If your PCM has 4 lugs you already have a 5 speed. Your 4 speed can be turned into a 5 speed IF you meet that criteria. No one said anything about a 6 speed.
What else is specifically your question that hasn't been answered multiple times already?
HS, by the way... the sky is blue.
IndyDurango
Dan the Fastman spelled out which units work and which don't as well as what to do if you want it pretty clearly in the thread you linked to. This upgrade is for 01 and 02 4.7 Dodges with a separate TCM (Transmission Control Module) If your 4.7 vehicle's PCM (Power Control Module) has 3 lugs this is for you. If your PCM has 4 lugs you already have a 5 speed. Your 4 speed can be turned into a 5 speed IF you meet that criteria. No one said anything about a 6 speed.
What else is specifically your question that hasn't been answered multiple times already?
HS, by the way... the sky is blue.
IndyDurango
Last edited by IndyDurango; Sep 7, 2009 at 11:47 PM.