6.7L Automatic vs. Manual transmission

CumminsFan13 · 11-03-2009, 09:09 PM

Im planning on buying the new Dodge Ram HD truck in 2010 or 2011.

Obviously with the 6.7L Cummins engine. The transmission I would like with it is the 6-speed manual. Im tired of auto. trans. and not being able to swap my own gears

Even though the 6-speed auto. is a great trans.

I have a few questions.

The first is why is the 6.7L Cummins de-rated to 610 lb-ft of torque and 305 hp with the 6-speed manual???

Traditionally, with the 5.9L Cummins the H.O. motor was only available with the manual transmissions. So why is it different with the 6.7L?? I mean, transmissions should only have gotten stronger over the years. Manuals are know for the ability to handle big power better than automatics.

Also, the exact vehicle layout I would like is 3500 Laramie Crew Cab Dually Long Bed with all heavy duty and towing packages/ components. I looked at Dodge.com's spec for the 2010 Ram HD and with that layout the max payload is 4,690 lbs. Down from the max of 5,110 lbs. for properly configured vehicles. The max loaded trailer weight is 13,700/13,350 lbs for my configuration. The max loaded trailer weight for the properly configured vehicle is 18,500 lbs. Why is my configuration's capabilities down so much from the maxium numbers?? Is it because of the added weight that the crew cab and long bed have? Is it that the CC/LB weight replace some payload/towing weight??

Thanks!

-Garrett

__________________
"My next truck WILL be powered by a Cummins!"
-03 Ford F-250 XLT Super Duty 6.0L PSD 5R110 auto. RC LB, Delta Pro TB, S&B air intake/intake elbow, 103,115miles.

***firemansdiesel*** · 11-03-2009, 09:17 PM

Unless they changed the HP on the 2010+.... The HP is the same at 350 w/ an auto and manual, just the TQ is dropped to 610 w/ the manual. The CC's are rated at 305hp though.

__________________
2009 SLT Quad 4x4 CTD G56
Some Carli Suspension loving coming soon!

7492 · 11-03-2009, 09:25 PM

Quote:

Originally Posted by CumminsFan13

Im planning on buying the new Dodge Ram HD truck in 2010 or 2011.

Obviously with the 6.7L Cummins engine. The transmission I would like with it is the 6-speed manual. Im tired of auto. trans. and not being able to swap my own gears

Even though the 6-speed auto. is a great trans.

I have a few questions.

The first is why is the 6.7L Cummins de-rated to 610 lb-ft of torque and 305 hp with the 6-speed manual???

Traditionally, with the 5.9L Cummins the H.O. motor was only available with the manual transmissions. So why is it different with the 6.7L?? I mean, transmissions should only have gotten stronger over the years. Manuals are know for the ability to handle big power better than automatics.

Also, the exact vehicle layout I would like is 3500 Laramie Crew Cab Dually Long Bed with all heavy duty and towing packages/ components. I looked at Dodge.com's spec for the 2010 Ram HD and with that layout the max payload is 4,690 lbs. Down from the max of 5,110 lbs. for properly configured vehicles. The max loaded trailer weight is 13,700/13,350 lbs for my configuration. The max loaded trailer weight for the properly configured vehicle is 18,500 lbs. Why is my configuration's capabilities down so much from the maxium numbers?? Is it because of the added weight that the crew cab and long bed have? Is it that the CC/LB weight replace some payload/towing weight??

Thanks!

-Garrett

Things that knock it down are cab config ,4 wheel drive , & gears

__________________

07 Megacab 2500 4x4 6.7Liter 68RFE 3.70 limited slip . Bone stock and no problems 20 MPG highway easy .. 21.75 best so far.1999 Durango 5.9 Liter 3.92's ALL the options.
Work truck 09 Freightliner M2 33k GVW ISC 260/840 RFO9210B

WyoMike6.7 · 11-04-2009, 01:07 AM

I am pretty sure it is the same. I would highly doubt they derated it, like firemansdiesel said, I think that is the C&C version...

__________________
2008 6.7 quad cab short box - Smarty - 5'' TBE RSD - EGR Blocked - Edge JWA (Used for Gauges) - Banks CAI w/scoop - Recon chrome ion cab lights - 2'' HBS leveling kit - Rolling Big Power R94 20x10 - Toyo Open Country MT 33x12.50 - Eyelids

pcdebol · 11-04-2009, 02:04 AM

I don't know if this is true or not but I was at my local diesel performance shop today talking about taking in my untagged truck and having it deleted. haha. One of the mechanics there was complaining about the new manual transmission saying it was a throw away piece of junk. Its not the same manual transmission that was in the 5.9's. I don't know if that is true or not but I have no reason to doubt them. I do know from many conversations with the wonderful people at my local dealership (man have I been there alot since my 6.7 purchase) that Cummins has been working with Dodge to make their Auto compete with GMs for durability and reliability and they are pushing it.

909FF/PM · 11-04-2009, 02:29 AM

Cumminsfan13, I think I looked at the same spec. sheet as you. I'm looking at the same truck as you but in 4X4 and noticed the decrease in HP and TQ rating for the manual trans. The tow rating also drops from 17K to 13K (fifth wheel). I also would love the manual but it looks like i'm going to have to go with the auto due to the tow rating. My be some out on here can help you out.

***firemansdiesel*** · 11-04-2009, 02:50 AM

Here is some info on the 2010's...

2010 Dodge Ram Heavy Duty pickup truck news

__________________
2009 SLT Quad 4x4 CTD G56
Some Carli Suspension loving coming soon!

K5Cruz · 11-04-2009, 09:20 AM

The manuals are derated to save the junk factory clutch. I have the ability to break about anything that is said to be unbreakable. My G56 is still in one piece. I am 100% sure an automatic would have lasted a few months tops. You wont regret the manual.

__________________
2007 6.7 2500 Crew Cab 6 Speed Manual. Black, Black Rockstars, Mud Grapplers, H&S 4", MBRP, PMT, AFE, Valair DD, AD150, MP-8. 458hp/941tq.
Chrome wont get you home and it only takes 13 months to get a Road Armor.

ZDiesel · 11-04-2009, 09:26 AM

just from reading a few posts, is appears that they were derated because of the clutch. if you got the means most folks on here would say to ditch the stocker and get a valair or south bend. if you are going to do any mods the $500 clutch is cheaper than a $1300 TC for the Auto(and that still doesn't mean that you won't toast your auto). I think most of the stock Manuals are holding 500hp no problem with aftermarket clutches.
if you are gonna leave it stock then stick with the Auto.

__________________
2008 BLK 2500 Quad 4x4 SLT, 6.7L, Auto, 2in Leveling Kit, 325/70R17 Toyo ATs

DrewGFY · 11-04-2009, 10:06 AM

An auto trans has better torque multiplication than a manual. Maybe thats were the difference is. As far as tow limits, its the rear end that changes the limits not the trans. My 6.7 specs are 350Hp and 605 Tq.
As far as what is better. I like being able to pick what gear i'm in. Manual for me.

__________________
07.5 3500 DRW,6.7, 4x4, EGR unplugged, DPF gone....
02 f-250 7.3 PSD super duty

CumminsFan13 · 11-04-2009, 07:08 PM

Quote:

Originally Posted by 909FF/PM

Cumminsfan13, I think I looked at the same spec. sheet as you. I'm looking at the same truck as you but in 4X4 and noticed the decrease in HP and TQ rating for the manual trans. The tow rating also drops from 17K to 13K (fifth wheel). I also would love the manual but it looks like i'm going to have to go with the auto due to the tow rating. My be some out on here can help you out.

I read it on the Dodge.com's website under the 2010 dodge ram section. The PDF spec sheet that they provide there. The 610 lb-ft was in small print Under the 6.7L specs with 650 lb-ft having a * next to it refering you to the 610 notice. Im also looking at a
4x4 truck if I didnt specify that earlier.

__________________
"My next truck WILL be powered by a Cummins!"
-03 Ford F-250 XLT Super Duty 6.0L PSD 5R110 auto. RC LB, Delta Pro TB, S&B air intake/intake elbow, 103,115miles.

CumminsFan13 · 11-04-2009, 07:20 PM

I'll be adding more power pretty soon after I get the truck so the 610 lb-ft rating doesnt bother me, it will be over stock power levels quick I hope. As such, an upgraded clutch is already on my list of needed parts. I'd rather buy a new clutch than a new TC or whole auto. trans. should something get fried.

I like shifting my own gears and the relative simplicity of a manual. Todays auto. trans. computers are very smart, but they cant account for every situation, dont have insticts, and cant really anticipate things.

Thanks for all the input guys!!

Really appreciate it!

-Garrett

__________________
"My next truck WILL be powered by a Cummins!"
-03 Ford F-250 XLT Super Duty 6.0L PSD 5R110 auto. RC LB, Delta Pro TB, S&B air intake/intake elbow, 103,115miles.

Last edited by CumminsFan13 : 11-04-2009 at 07:25 PM. Reason: forgot something

11-03-2009, 09:09 PM	#1 (permalink)
CumminsFan13 Newbie Join Date: Oct 2009 Location: Michigan Posts: 18 Thanks: 31 Thanked 1 Time in 1 Post CumminsFan13's Truck Pics	6.7L Automatic vs. Manual transmission Im planning on buying the new Dodge Ram HD truck in 2010 or 2011. Obviously with the 6.7L Cummins engine. The transmission I would like with it is the 6-speed manual. Im tired of auto. trans. and not being able to swap my own gears Even though the 6-speed auto. is a great trans. I have a few questions. The first is why is the 6.7L Cummins de-rated to 610 lb-ft of torque and 305 hp with the 6-speed manual??? Traditionally, with the 5.9L Cummins the H.O. motor was only available with the manual transmissions. So why is it different with the 6.7L?? I mean, transmissions should only have gotten stronger over the years. Manuals are know for the ability to handle big power better than automatics. Also, the exact vehicle layout I would like is 3500 Laramie Crew Cab Dually Long Bed with all heavy duty and towing packages/ components. I looked at Dodge.com's spec for the 2010 Ram HD and with that layout the max payload is 4,690 lbs. Down from the max of 5,110 lbs. for properly configured vehicles. The max loaded trailer weight is 13,700/13,350 lbs for my configuration. The max loaded trailer weight for the properly configured vehicle is 18,500 lbs. Why is my configuration's capabilities down so much from the maxium numbers?? Is it because of the added weight that the crew cab and long bed have? Is it that the CC/LB weight replace some payload/towing weight?? Thanks! -Garrett __________________ "My next truck WILL be powered by a Cummins!" -03 Ford F-250 XLT Super Duty 6.0L PSD 5R110 auto. RC LB, Delta Pro TB, S&B air intake/intake elbow, 103,115miles.

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11-03-2009, 09:17 PM	#2 (permalink)
*firemansdiesel* It's Only Money! Join Date: Mar 2007 Location: Golden State Posts: 659 Thanks: 5 Thanked 17 Times in 17 Posts firemansdiesel's Truck Pics	Unless they changed the HP on the 2010+.... The HP is the same at 350 w/ an auto and manual, just the TQ is dropped to 610 w/ the manual. The CC's are rated at 305hp though. __________________ 2009 SLT Quad 4x4 CTD G56 Some Carli Suspension loving coming soon!

11-04-2009, 01:07 AM	#4 (permalink)
WyoMike6.7 Cummins Nut Join Date: May 2009 Location: Wyoming Posts: 448 Thanks: 179 Thanked 25 Times in 21 Posts WyoMike6.7's Truck Pics	I am pretty sure it is the same. I would highly doubt they derated it, like firemansdiesel said, I think that is the C&C version... __________________ 2008 6.7 quad cab short box - Smarty - 5'' TBE RSD - EGR Blocked - Edge JWA (Used for Gauges) - Banks CAI w/scoop - Recon chrome ion cab lights - 2'' HBS leveling kit - Rolling Big Power R94 20x10 - Toyo Open Country MT 33x12.50 - Eyelids

11-04-2009, 02:04 AM	#5 (permalink)
pcdebol Newbie Join Date: Nov 2009 Posts: 5 Thanks: 0 Thanked 1 Time in 1 Post pcdebol's Truck Pics	I don't know if this is true or not but I was at my local diesel performance shop today talking about taking in my untagged truck and having it deleted. haha. One of the mechanics there was complaining about the new manual transmission saying it was a throw away piece of junk. Its not the same manual transmission that was in the 5.9's. I don't know if that is true or not but I have no reason to doubt them. I do know from many conversations with the wonderful people at my local dealership (man have I been there alot since my 6.7 purchase) that Cummins has been working with Dodge to make their Auto compete with GMs for durability and reliability and they are pushing it.

11-04-2009, 02:29 AM	#6 (permalink)
909FF/PM Newbie Join Date: Nov 2009 Posts: 5 Thanks: 0 Thanked 1 Time in 1 Post 909FF/PM's Truck Pics	Cumminsfan13, I think I looked at the same spec. sheet as you. I'm looking at the same truck as you but in 4X4 and noticed the decrease in HP and TQ rating for the manual trans. The tow rating also drops from 17K to 13K (fifth wheel). I also would love the manual but it looks like i'm going to have to go with the auto due to the tow rating. My be some out on here can help you out.

11-04-2009, 02:50 AM	#7 (permalink)
*firemansdiesel* It's Only Money! Join Date: Mar 2007 Location: Golden State Posts: 659 Thanks: 5 Thanked 17 Times in 17 Posts firemansdiesel's Truck Pics	Here is some info on the 2010's... 2010 Dodge Ram Heavy Duty pickup truck news __________________ 2009 SLT Quad 4x4 CTD G56 Some Carli Suspension loving coming soon!

11-04-2009, 09:20 AM	#8 (permalink)
K5Cruz Take Your Chrome Home. Join Date: Oct 2007 Location: Seminole, OK Posts: 516 Thanks: 12 Thanked 6 Times in 6 Posts K5Cruz's Truck Pics	The manuals are derated to save the junk factory clutch. I have the ability to break about anything that is said to be unbreakable. My G56 is still in one piece. I am 100% sure an automatic would have lasted a few months tops. You wont regret the manual. __________________ 2007 6.7 2500 Crew Cab 6 Speed Manual. Black, Black Rockstars, Mud Grapplers, H&S 4", MBRP, PMT, AFE, Valair DD, AD150, MP-8. 458hp/941tq. Chrome wont get you home and it only takes 13 months to get a Road Armor.

11-04-2009, 09:26 AM	#9 (permalink)
ZDiesel Diesel Freak Join Date: Dec 2007 Location: Chucktowne, SC Posts: 706 Thanks: 25 Thanked 22 Times in 21 Posts ZDiesel's Truck Pics	just from reading a few posts, is appears that they were derated because of the clutch. if you got the means most folks on here would say to ditch the stocker and get a valair or south bend. if you are going to do any mods the $500 clutch is cheaper than a $1300 TC for the Auto(and that still doesn't mean that you won't toast your auto). I think most of the stock Manuals are holding 500hp no problem with aftermarket clutches. if you are gonna leave it stock then stick with the Auto. __________________ 2008 BLK 2500 Quad 4x4 SLT, 6.7L, Auto, 2in Leveling Kit, 325/70R17 Toyo ATs

11-04-2009, 10:06 AM	#10 (permalink)
DrewGFY Newbie Join Date: May 2009 Posts: 23 Thanks: 0 Thanked 1 Time in 1 Post DrewGFY's Truck Pics	An auto trans has better torque multiplication than a manual. Maybe thats were the difference is. As far as tow limits, its the rear end that changes the limits not the trans. My 6.7 specs are 350Hp and 605 Tq. As far as what is better. I like being able to pick what gear i'm in. Manual for me. __________________ 07.5 3500 DRW,6.7, 4x4, EGR unplugged, DPF gone.... 02 f-250 7.3 PSD super duty

11-04-2009, 07:20 PM	#12 (permalink)
CumminsFan13 Newbie Join Date: Oct 2009 Location: Michigan Posts: 18 Thanks: 31 Thanked 1 Time in 1 Post CumminsFan13's Truck Pics	I'll be adding more power pretty soon after I get the truck so the 610 lb-ft rating doesnt bother me, it will be over stock power levels quick I hope. As such, an upgraded clutch is already on my list of needed parts. I'd rather buy a new clutch than a new TC or whole auto. trans. should something get fried. I like shifting my own gears and the relative simplicity of a manual. Todays auto. trans. computers are very smart, but they cant account for every situation, dont have insticts, and cant really anticipate things. Thanks for all the input guys!! Really appreciate it! -Garrett __________________ "My next truck WILL be powered by a Cummins!" -03 Ford F-250 XLT Super Duty 6.0L PSD 5R110 auto. RC LB, Delta Pro TB, S&B air intake/intake elbow, 103,115miles. Last edited by CumminsFan13 : 11-04-2009 at 07:25 PM. Reason: forgot something