Ford 6.7L 1050 ft lbs TQ at 1,600 rpm, 475 HP at 2,800 rpm

Grit dog wrote:
^ The not quite granny low first gear in the G56 is the perfect ratio for coming off the line with a heavy load and nice for creeping around at an idle on rough roads, etc.
2nd through 5th are also a good spread (at least with the power I have with a tune) for most any trailer. Never pulled more than 16-18k with it though and only a couple times, but the gear splits were "good enough" to keep in the power band. Where the G lacks is it desperately needs a 7th gear, at least with the 3.73s or deeper gears. Never drove a 3.42/G56 truck.
6th could be geared just a bit lower and 7th for empty road trips across Montana.
Over 10 years and 170k miles later, I still randomly reach for 7th gear after hours of bombing down the highway at 2500-2600rpms! Still haven't found it....

Most of the time the gear splits are fine to keep mine in the power band too, but there is the odd time on a really tough pull where I get caught in the middle (I think it’s only happened twice). Once I upgrade the clutch I’m thinking off adding a towing tune so maybe that will help. I agree that a 7th gear would be nice for the highway.

Overall I still really like the stick, though. My wife doesn’t like driving it either but she gets by the very odd time it’s required....:B

Yea, the 6th gear of the G56 is right smack dab in the middle ratio wise between 5th and 6th of the 68RFE and Aisin. And the torque multiplication of the torque converter in 1st and 2nd gears allows for taller gear ratios in the autos. You can't do this on a manual since the clutch does not multiply torque coming from the engine. Although I would still love to have a manual over an auto, but the wife put her foot down on that. She would not be able to drive me home from the farm when I have had too many.

^ The not quite granny low first gear in the G56 is the perfect ratio for coming off the line with a heavy load and nice for creeping around at an idle on rough roads, etc.
2nd through 5th are also a good spread (at least with the power I have with a tune) for most any trailer. Never pulled more than 16-18k with it though and only a couple times, but the gear splits were "good enough" to keep in the power band. Where the G lacks is it desperately needs a 7th gear, at least with the 3.73s or deeper gears. Never drove a 3.42/G56 truck.
6th could be geared just a bit lower and 7th for empty road trips across Montana.
Over 10 years and 170k miles later, I still randomly reach for 7th gear after hours of bombing down the highway at 2500-2600rpms! Still haven't found it....

blofgren wrote:

Grit dog wrote:
^True statement, but pursuant to ksss post, the Cummins has a smaller rpm range and more cogs would help the option and ability to pick the operating characteristics.
My G56 is a glorified 5 speed with granny gear and I can run 85-90 mph all day but she's screaming. And loaded heavy, I sometimes have to settle on a particular speed that I can pull and keep egts in check vs picking the speed I want and having a gear to accommodate it.
The low rpm range of the C will benefit greatly from more cogs. Moreso than the higher revving V8s in this respect, IMO. More IS better in this case. For everyone.

Agreed. I too have had issues when loaded heavy on steep grades with no ability to get a run at it where I’m caught between 3rd and 4th gear on the G56; lots of power in 3rd but can’t quite hold 4th. Oh well, the old girl is reliable and paid for! :B

That is because of the gear ratios of the G56. Due to having a granny gear, you essentially have a 5 speed with one overdrive and the rest of the gears are spaced out too far apart to accommodate. The 68RFE/Aisin has less of a spread and has two overdrive gears.

G56 spread
1st/2nd:-45%
2nd/3rd:-40%
3rd/4th:-34%
4th/5th:-24%
5th/6th:-26%

68RFE spread
1st/2nd:-43%
2nd/3rd:-23%
3rd/4th:-29%
4th/5th:-18%
5th/6th:-23%

Aisin spread
1st/2nd:-46%
2nd/3rd:-32%
3rd/4th:-25%
4th/5th:-23%
5th/6th:-18%

Grit dog wrote:
^True statement, but pursuant to ksss post, the Cummins has a smaller rpm range and more cogs would help the option and ability to pick the operating characteristics.
My G56 is a glorified 5 speed with granny gear and I can run 85-90 mph all day but she's screaming. And loaded heavy, I sometimes have to settle on a particular speed that I can pull and keep egts in check vs picking the speed I want and having a gear to accommodate it.
The low rpm range of the C will benefit greatly from more cogs. Moreso than the higher revving V8s in this respect, IMO. More IS better in this case. For everyone.

Agreed. I too have had issues when loaded heavy on steep grades with no ability to get a run at it where I’m caught between 3rd and 4th gear on the G56; lots of power in 3rd but can’t quite hold 4th. Oh well, the old girl is reliable and paid for! :B

Grit dog wrote:
12V. I’m not butthurt, just having fun!

Understood. :B

12V. I’m not butthurt, just having fun!

I have heard fords pull like a freight train!!

chevman

ShinerBock wrote:

Grit dog wrote:
I admire 12Vs tenacity.
The team 12V uniform now includes Cummins undies, AmZoil socks, a Ram hoodie over an Aisin T shirt!

4x4ord wrote:
I can't believe you forgot the B&W ball cap.

I almost spit out my coffee on this one. This forum definitely needs a like button.

:B

Grit dog wrote:
I admire 12Vs tenacity.
The team 12V uniform now includes Cummins undies, AmZoil socks, a Ram hoodie over an Aisin T shirt!

Don't forget my B&W hat, yes they did send me one! :B