RowJ

Yup... about 150 rpm less at 70 mph. Don't know exactly why, when locked, this doesn't translate to better cruising mileage... but it doesn't! Must be more internal drag?

RJ

Duallydog

It's going to be more than 150 rpm with the difference between the 48re and the G-56. Its more like 150 rpm difference between the NV and the 48re and possibly that much difference between the 6spds.

RowJ

I give up... what's a G-56?
There is 200 rpm difference between 5 sp in 5th and a 47RE in OD.
150 rpm difference between 6 sp in 6th and a 47 RE in OD.
That's all I know

Is 48RE different OD gear than the 47RE (.69). I thought they were identical.



RJ

Spooler

The G-56 is in the MY 05' to current trucks. Sixth gear is higher than the NV5600. Someone will chime in and tell you the ratio. That is why they are only offered with the 3.73 rearend gear. They say it is similiar to the NV5600 with 4.10 rears.

DBLR

Why did you throw all of your receipts away? Any time you do the work your self you need to keep reciepts to show that you bought the oil & filters, air filters etc. This is why I buy my own oil & filters but spend $12.00 to let the dealer change the oil and lube it as this way there is a record of oil changes. When I changed my diff out a few weeks ago I made a photo copy of the store receipt and keep them together just to prove I bought the gear oil to change the diff's.

Too me it sounds like Ford is playing real hard ball with you. Could they have seen some of your post you have made online bad mouthing them, so this is how they are getting back at you? Anyway with out the paper receipts you may very well be SOL.

Hope it works out for you.

Duallydog

Ok (I think I need to just put this in my sig.) The 48re is .69 final ratio, the NV-5600 (the one that's been in the Dodges from 2000(I know of)-05) is .73, the G-56 is Dodges in house transmission that came in on some 05's and all 06+ (with 6spds) is .79. With 3.73s on the G-56 it runs just short of the NV-5600 with 4.10s. It's just short of 2200 rpm at 70mph. 1st,2nd, and 6th are lower on the G when compared to the NV. 3rd and 4th are close but not exact. BTW what trucks where you using to compare the 5 and 6spd? To my knowledge the NVs -4500 (5spd) and 5600 (6spd) are are the same with the exception of 3rd and 4th are lowered on the 5600 to fill in the gap and 5th on the 5600 is the same as 4th was on the 5spd.

RowJ

Using 01 & 02 to compare trannys!

47RE is .69 in OD (4th)
5 sp (NV-4500) is .75 in 5th
6 sp (NV-5600) is .73 in 6th

My source is - http://www.dodgeram.org/tech/specs/Ramspecs.htm

RJ

Duallydog

That's why I had the disclaimer (to my knowledge) on the 4500. BTW nice smoke trail on your avatar.

RowJ

I saw that... just answering your question and making correction for others that might be following this thread.

Thanks, took that pic just before the twin install.... can't roll that kind of smoke anymore, which is good, IMO

RJ

JyRO

My head hurts after reading the last 3 replies.

I stopped by the local dealer and looked at a few 06 Megas. Nice. And drove one. Did I say nice? Nice. My problem is, I love bells and whistles.

Got my 2000 model with everything I could, and am still happy I did. Old blue's been paid off over 3.5 years now. It's blown 1 LP, covered under warranty and has had NOT ONE other problem (except a burnt taillight ). 111k+ miles.

Might be feeling a bit of an itch for a new truck. The one I drove was the 48re. It sure was an easy truck to drive. Too easy. And too quiet. Old blue is straight piped. Not sure how I felt about the quietness of the new truck. The auto was unresponsive, unlike old blue and the 6 speed (with EZ & 275's).

Old blue at speed (say 45 mph) - slight push on the noise pedal = immediate pull & increased harmony.

48re at speed (say 45 mph) - slight push on the noiseless pedal = "what was that you wanted?" More pushing on the pedal though and it would catch on to my meaning.

This is exactly what is meant my "more control with a 6 speed." I tow a lot, and having a 6 speed is outstanding.

So here's my problem. If I got a Mega cab, I'd have to have the Navi, RES, and sunroof. I just love them toys! We bought an '06 Odyssey with Navi & RES, and I'm hooked on the Navi. But, without an 8 foot bed option on the Mega cab, old blue's going to be in the stable for a while yet.

Sorry for dragging on.

- JyRO

Duallydog

One of the banners that came across here on DTR is one on making the mega cab a long bed.

RowJ

I get the 'itch' for a new truck about once a year.
For me. all it takes is a test drive to remember that the new ones don't come close to driving like my set up. The only thing I come away coveting is the steering!

RJ

Diesel Junkie

So i am guessing that the way to go is with an 07 5.9 built before 1/1/07.

The extra cubic inches of a 6.7L sound tempting, but I really dont want the headaches of the new emissions... Also EGR is always a bad thing.

Its a tough call but i think i will order a 5.9 soon, maybe this week.

Any good reasons whey the 6.7L will be a better motor?

ROOFGOOF

DBLR - I am currently in the process with Ford and BBB...Should know something within 30 days. From what I've read so far concerning a buyback from ford is: They 1st offered an extended warranty (which they already did and I denied) then it goes to Ford offering a few payments of the truck then it goes to buyback. I hope my luck goes that way too.

I've spoke to an attorney and they advised me that reciepts are not needed for oil changes etc unless it is an obvious misuse of the motor with neglect. My truck has been in the shop since 3K miles and they never once reported abuse or lack of care that was the cause of my oil leaks.

So, I guess it will go to arbitration.

I am going to return my truck to another dealer close to my home and let them attempt to fix the oil leak again, since the cost of that is anywhere between $400-$800 in my past experiences with Ford. It should help my case even more!

I also have records of Blackstone reports and a detailed log of my maintenance which the lawyer said its plenty. I am definetly going to fight this to the end. They will have a tough time trying to prove I didnt take care of the motor with oil changes. I loved that truck and took great care of it...but it has failed me miserably.

We'll see what happens next.

Duallydog

More power to ya.