New 2012 with 68RFE
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Joined: Mar 2002
Posts: 8,311
Likes: 52
From: Holly Ridge, N.C.
Ya what do I know about heavy towing, I only tow 38 to 42K and have 5 gooseneck trailers. Oh and I have had 14 Horses in my trailer, Never pulled a 5er those Can't even imagine how hard one of those whould pull
Main problem I have with the 6 speed auto is first gear needs to be lower to get the load rolling with 3.73 gears in the rear.
Main problem I have with the 6 speed auto is first gear needs to be lower to get the load rolling with 3.73 gears in the rear.
So RAMRODD,.....you want to come in here and reply with a "sarcastic" post huh?
If you will go back and re-read my earlier post to your quote I said; "No disrespect to you,........" when I posted and gave MY opinion to the OP here!
Nowhere did I question your towing experience Sir! But after owning five (5) Dodge CTD Pickups with automatics I can tell you that in STOCK condition they are WEAK! You can ask ANY of the aftermarket diesel transmission builders in the U.S. and they will tell you or any other DTR Member here the same thing! I have also torn down "overused/overpowered" stock Dodge CTD transmissions and they DO NOT hold up well. The original poster here has a right to know that!
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John_P
Banned
Joined: Jan 2006
Posts: 2,756
Likes: 1
From: McDonough GA
Just wondering what I can do to this tranny to make it last. I'm gonna add a H&S black max to it later along with deletes for fuel milege and run it on economy. I need this truck in the summer months to tow a 5er and horse trailer. My first auto. Will a simple valve body get me what I need?
The external WG idea is just a bad theory and won't help the problem. The simaesed cylinders and cheap stock HG is the problem. The only way to fix that is stud it and use a good gasket. Once you do the deletes and add power the OE short comings just show up faster. The differential expansion rates increase with power and there goes the HG.
On economy you stand a chance of having decent luck not hurting something but the chance still exists becasue of the parameter changes from stock. More and more the over built percentage decreases on the newer trucks so modifying becomes a whole different deal.
Administrator
Joined: Mar 2002
Posts: 8,311
Likes: 52
From: Holly Ridge, N.C.
The transmission in stock form is under clutched and over managed. Once you step away from the stock power and TQ management it is in danger. The real problem is you fix one area and the problem moves to the next so you end having to do 3 out 4 things just to be safe.
The external WG idea is just a bad theory and won't help the problem. The simaesed cylinders and cheap stock HG is the problem. The only way to fix that is stud it and use a good gasket. Once you do the deletes and add power the OE short comings just show up faster. The differential expansion rates increase with power and there goes the HG.
On economy you stand a chance of having decent luck not hurting something but the chance still exists becasue of the parameter changes from stock. More and more the over built percentage decreases on the newer trucks so modifying becomes a whole different deal.
The external WG idea is just a bad theory and won't help the problem. The simaesed cylinders and cheap stock HG is the problem. The only way to fix that is stud it and use a good gasket. Once you do the deletes and add power the OE short comings just show up faster. The differential expansion rates increase with power and there goes the HG.
On economy you stand a chance of having decent luck not hurting something but the chance still exists becasue of the parameter changes from stock. More and more the over built percentage decreases on the newer trucks so modifying becomes a whole different deal.
no_6_oh_no:
Good post Sir! Thanks for your reply on this Dodge CTD CR 6.7 Transmission
issue. I know you work on alot of them.
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John_P
Registered User
Joined: Jan 2006
Posts: 1,416
Likes: 1
From: Dakotas
I was just stating what I tow, and that the transmission has held up just fine so far. I am sorry that it came out sarcasticly.
What I don't' understand here is why some people here are sugesting replacing the tq converter on this new HO truck that has the factory upgraded tq converter, when we actually don't know how much better it is over the previos converter.
I stand by my earlier statement that a external wastgate (for the motor) is way more important then a trans mod. If all of you disagree with me that is fine. But I am not going to sit back and let a member here blow a headgausket like I did when I didn't know any better.
What I don't' understand here is why some people here are sugesting replacing the tq converter on this new HO truck that has the factory upgraded tq converter, when we actually don't know how much better it is over the previos converter.
I stand by my earlier statement that a external wastgate (for the motor) is way more important then a trans mod. If all of you disagree with me that is fine. But I am not going to sit back and let a member here blow a headgausket like I did when I didn't know any better.
Top's Younger Twin
Joined: Nov 2001
Posts: 3,743
Likes: 21
From: Thanks Don M!
I'll jump in here with my experience with 158,000 miles on a 68 where over 100K has been done with Smarty SW3 and towing at least 30% of that.
Not one problem. I believe that my success is partly because I am aware of what the go pedal can do under load and how I drive. I am not aiming at the 500HP range and I know that even SW5 would hit and exceed my limits.
I just took a sample of the ATF as well as my engine oil and sent them to Blackstone Labs. Both came back in very good condition.
If I was to pursue high HP, racing, pulling and or bogging, I would address the transmission as well as several other areas in the drivetrain. And it sure would not be with a long bed Mega Cab dually.
The combination I have and the results of the oil tests tell me things are good.
When I pull heavy and hit long grades or steep grades I will manually downshift and keep rpm's above 2K. Quite often I end up in 4th and still maintain a safe speed that blends well with the traffic in those situations.
I have the 373 gears, stock tire size.
Not one problem. I believe that my success is partly because I am aware of what the go pedal can do under load and how I drive. I am not aiming at the 500HP range and I know that even SW5 would hit and exceed my limits.
I just took a sample of the ATF as well as my engine oil and sent them to Blackstone Labs. Both came back in very good condition.
If I was to pursue high HP, racing, pulling and or bogging, I would address the transmission as well as several other areas in the drivetrain. And it sure would not be with a long bed Mega Cab dually.
The combination I have and the results of the oil tests tell me things are good.
When I pull heavy and hit long grades or steep grades I will manually downshift and keep rpm's above 2K. Quite often I end up in 4th and still maintain a safe speed that blends well with the traffic in those situations.
I have the 373 gears, stock tire size.
Administrator
Joined: Mar 2002
Posts: 8,311
Likes: 52
From: Holly Ridge, N.C.
I was just stating what I tow, and that the transmission has held up just fine so far. I am sorry that it came out sarcasticly.
What I don't' understand here is why some people here are sugesting replacing the tq converter on this new HO truck that has the factory upgraded tq converter, when we actually don't know how much better it is over the previos converter.
I stand by my earlier statement that a external wastgate (for the motor) is way more important then a trans mod. If all of you disagree with me that is fine. But I am not going to sit back and let a member here blow a headgausket like I did when I didn't know any better.
What I don't' understand here is why some people here are sugesting replacing the tq converter on this new HO truck that has the factory upgraded tq converter, when we actually don't know how much better it is over the previos converter.
I stand by my earlier statement that a external wastgate (for the motor) is way more important then a trans mod. If all of you disagree with me that is fine. But I am not going to sit back and let a member here blow a headgausket like I did when I didn't know any better.
O.K. RAMRODD,......fair enough!
While the "upgraded" TC in the new 2012 Dodge CTD CR 6.7 Trucks are somewhat better, IMHO,...they still are not up to ANY of the aftermarket diesel TC's that out there. We now have triple disc units from ALL the major aftermarket diesel tranny companies that hold up extremely well. They are far above any of the stock TC's that Dodge builds. The diesel drag racing and sled pulling events have proven that over and over again.
As far the external wastegate issues, I am sorry you had trouble with your truck Sir. But DTR Member no_6_oh_no makes a very good point in his post about why that may not be the best thing to do and I tend to agree with him.
We all have our opinions on this and these discussions are good as the OP can read our replies and decide what is best for him. IMO,....that is what makes DTR great. Like alot of you here, I have made ALOT of mistakes with my trucks too and done some things I wish I had never done!
Hopefully, I (we) can pass our bad experiences with these trucks on to others so as you said RAMRODD they don't make the same mistakes we did!I have also found that what works for one my not work so good for another DTR Member.
Thanks for all your replies fellas!
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John_P
Thread Starter
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Joined: Oct 2007
Posts: 402
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From: Alberta
I too am overwhelmed with responses, thanks to everyone for the heads up. Good to have a little learning session as I just came from a G56 which was a simple fix for added power-big clutch
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From: Home: Kaplan, LA - Pipelining In: Pecos, Tx
Pay now
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