6.7L Automatic vs. Manual transmission

[atlas59]

Originally Posted by pcdebol

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.

they started using the g56 in 2005 so it is the same manual that the later 5.9s used....it seems the only guys i have heard that are having problems are the guys that are trying to drag race them or tow EXTREMELY HEAVY. I have done several 500 plus mile trips towing company equipment in excess of 20k without tranny issues.

__________________
2007 Mega Cab 3500 dually 4x4, 6spd, 3.73, afe mega cannon, 5in tbe, egr delete, egr cooler delete, isspro ev2 gauges, Smarty ME

[CumminsFan13]

Originally Posted by atlas59

they started using the g56 in 2005 so it is the same manual that the later 5.9s used....it seems the only guys i have heard that are having problems are the guys that are trying to drag race them or tow EXTREMELY HEAVY. I have done several 500 plus mile trips towing company equipment in excess of 20k without tranny issues.

Thanks for the heads up! The guys who had problems with the G56's who where drag racing/ extreme weight towing, did they have stock G56's?

Ive heard few problems about the G56 manual. I have heard lots about stock or even upgrade automatic's being eaten alive by the Cummins massive torque though. Either fried TC's, snapped shafts, or something.

__________________
"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]

As long, as you get the right clutch for your application w/ the truck. An upgraded clutch is bullet proof for the most part.

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

[CumminsFan13]

Originally Posted by firemansdiesel

As long, as you get the right clutch for your application w/ the truck. An upgraded clutch is bullet proof for the most part.

Yep, I would definitely do a lot of research into the clutch and plan it for the power level I would like to obtain. Im thinking South Bend or Valair for the clutch. Would an upgraded clutch void my factory powertrain warranty? Just curious. I would delete the DPF, SCR, and EGR ASAP! One of my first modifications. I like reliable, sustainable power. So the warranty would be voided the second I take the stuff I listed off right? 99% sure it would be.

__________________
"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]

The way the big three are w/ the emission components, you delete, they seem to void the entire warranty on the truck (should be just the engine/drivetrain/emission voided). So w/ an upgraded clutch, no, but w/ deletes, yes. lol

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

[CumminsFan13]

Originally Posted by firemansdiesel

The way the big three are w/ the emission components, you delete, they seem to void the entire warranty on the truck (should be just the engine/drivetrain/emission voided). So w/ an upgraded clutch, no, but w/ deletes, yes. lol

Ya thats pretty annoying. I'll still do the deletes and take the chance on something failing with no warranty most likely.

__________________
"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.

[cjowett]

Originally Posted by pcdebol

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.

I don't know about the transmision being junk but I know the clutch is. Stick with the auto (I thought I'd never say that. I'm a dyed-in-the-wool stickshift guy.)

[pepsi71ocean]

the g56's ive hear are junk, you would be better off with a NV5600 then a g56. ide stick with the auto, Personally i like towing with an auto, but i know it can't handle the EB and slowing down like a manual does.

but i consider the g56's crap so ide say auto.

__________________
99 Dodge 3500 CTD Auto 3.55 4x4, BHAF mod 6637, 6 inch lift, Danin Optix Fuel, Pyro and Trans gauge, FASS 95/150 2LO Option!!!!
08 Dodge 3500 CTD Auto 4.10 stock, FTE Diesel ROCKS!!

[colocummins]

Go with a manual. If you add any power at all to an auto you will most likely fry your clutch and possibly the tranny.

__________________
08 2500 6.7L 6 speed qc lb --- leveled, AEM intake, 5"tbe w/6" tip, Smarty 14ME, egr/cooler gone, Code Free!!!!!!!! Custom deer killer

[CumminsFan13]

Ya im definitely going to get the G56 6-speed manual. I like the control and fun of a manual tranny. An auto. is boring to me. Its convinent, but boring.

Ive heard a mixed view on the G56. Some people say its a good transmission beside the weak factory clutch and others say its junk altogether. Its been fairly balanced.

I would be upgrading the from the factory clutch to a South Bend unit as soon as power gains dictated, which I hope would be fairly quick. In high horsepower apps. I have heard the G56 counter shaft can snap and the 2nd gear can deteriorate in heavy use situations (sled pulling, extremely heavy towing). I dont mind taking that chance, if it happens it happens. It is what it is. I would rather replace a few parts hear and there, than a whole auto. trans that got fried and eaten by the Cummins.

__________________
"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.

[04SSHD]

I love my G56, the only weak point is the clutch. Change that out as soon as possible with an upgraded single disk or a dual disk then you will have a bulletproof trans.

__________________
07.5 Dodge Ram 3500HD SLT 6.7L,11/06 build,5/08 delivery,PMT,DPF & EGR fell off,G56,4.10 (3.73 soon),C&C,HBS,5000k HID Solutions lights & fogs,14,000 miles to date,35" M/T,22.5's soon,Dyno at 445hp/907tq

[pepsi71ocean]

Originally Posted by CumminsFan13

I would be upgrading the from the factory clutch to a South Bend unit as soon as power gains dictated, which I hope would be fairly quick. In high horsepower apps. I have heard the G56 counter shaft can snap and the 2nd gear can deteriorate in heavy use situations (sled pulling, extremely heavy towing). I dont mind taking that chance, if it happens it happens. It is what it is. I would rather replace a few parts hear and there, than a whole auto. trans that got fried and eaten by the Cummins.

this is the only reason i consider it junk, i choose the auto simply because by the time the warranty is up on the truck , the market will most likely have upgrades aviable for the auto, but then again ive heard of people getting 100,000 miles out of a stock tranny with a stock motor towing heavy loads, so well see.

As for my older truck im still using it till the tranny dies, then its getting a Goerend tranny, (problem solved)

__________________
99 Dodge 3500 CTD Auto 3.55 4x4, BHAF mod 6637, 6 inch lift, Danin Optix Fuel, Pyro and Trans gauge, FASS 95/150 2LO Option!!!!
08 Dodge 3500 CTD Auto 4.10 stock, FTE Diesel ROCKS!!