Does any one make a Six Speed tranny for a sport truck?(granny 1st) That would take 200+ ft/lbs torque?
Project truck in the making!
Mike :fj: :jeep2:

NV5600 has a 5.63:1 first gear and a 0.73:1 overdrive sixth. It's at the bottom of this page (http://www.newventuregear.com/transmissions.html) Also rated for 550ft-lbs of torque. They're new within the last couple years or so, gonna be expensive I bet.

Originally posted by toy283
NV5600 has a 5.63:1 first gear and a 0.73:1 overdrive sixth. It's at the bottom of this page (http://www.newventuregear.com/transmissions.html) Also rated for 550ft-lbs of torque. They're new within the last couple years or so, gonna be expensive I bet.

This tranny is fine for a tow truck, but I can see no good reason to put one in your 4x4.

Approximate weight of an NV5600 W/O oil: 360 Pounds.

With an NV4500 (weight 200 pounds) you get approximately the same granny low and overdrive gears (much lower in the case of the early Chevy units) so why bother with all that extra poundage?

My $.03 USD

Jake

I was looking at the NV4500 as well but after finding out that the bellhousing is an integral part which contains the front bearing bulkhead I realized that its just not worth the hassle! The weight is also a weeee bit over what i'm looking for as already stated. Length is pretty long too, its a whole 5.5" longer then the NV4500.

So my new question is will the NV4500 hold up to 510HP and 575 ft/lbs torque??

This page http://darkwing.uoregon.edu/~jrice/cruiser/NV4500.html has a lot of info/specs on the NV4500 but no mention of max HP or torque.

According to this page http://www.drivetrain.com/nv4500info.html it can handle 450ft-lbs of torque.

There's also the ZF S6-650 but it too weighs nearly 300 lb and so far only the Ford version is available on the aftermarket, only for 7.3 and 6.8L V10 (might work on a 460). The GM version, with identical insides, only works on the new GM blocks: the Duramax, 6.0L V8, etc. It's not at all clear to me whether the GM S6-650 will bolt up to "old" Chevy blocks (it has an integral bellhousing) and in any respect they can't be found on the aftermarket.
Charlie

The new Chevy ZF should bolt up to an old chevy because it comes behind the new 8.1L big block which I was told has the same bell pattern and is basically the same block as the old 454. I don't know about the Duramax bellhousing and I though that the 6.0 only came with a 5 speed? Anyway its pretty much a moot point unless you have a brother with a huge wrecking yard full of new stuff!

NV4500 is rated at 450 ft lbs input torque; however the Cummins has been rated at 460 ft lbs since '98.5, and there are many living behind Cummins with way more torque than that. Keep in mind the rating also figures in the GVW of the trucks they were meant to go in.

Pete

Post your request over at SIERRAROCKCRAWLERS.COM

And direct your question at "Patman".....He knows a bunch
about torque capacities for those cummins-powered oil\
burners.......

There is one guy who races his dodge, and breaks input
shafts...........whoa..............

--Sherpa

You don't want a ZF6. I have one in my F350 and though it is a good tranny it is HUGE. You would have to have it ride along with you in the cab or the skid plate will be on the ground.

I ran across this site a while back. It begs more questions than it answers, but has a lot of information regarding their products. I was stuck with how many versions of transfer cases they have, including some way big and strong ones, probably for 2-5 ton applications. That's the rub though, they don't tell you in what applications specifically their products appear. I know my Dodge Cummins has the NV5600 and NV241HD transfer case but what about all the rest? Cool site, none the less. Lots of torque specs.
http://www.newventuregear.com/transmissions.html

ZF6 (H) 5.79/3.31/2.10/1.31/1.00/0.72/ '99 up FORD DIESEL
NV5600 (H) 5.63/3.38/2.04/1.39/1.00/0.73/5.63R '99 up Dodge dsl, V10
regards, as always, jefe

ther is a T-34 used in some IH trucks with a .75 for fifth gear and I think 1st is like 7.34 : 0 ther are two types sincronized and non-sincronized. On some of the larger trucks with the SV engins ther were some five speeds with a 1:1 fift gear



HTH

It looks like all roads lead back to the same NV4500! I was thinking there must be something better in a six speed with wider ratios, but maybe not. I'll keep lookin though! I would be much better off running a double down box or Klune-V and 3 sticks than the NV5600 due to weight and size. I have to start saving up for the fun stuff!
THANKS TO ALL FOR YOUR INPUT!
Mike :fj: :jeep2:

The 6 speed Ford S650 unit weighs 230 w/o oil. Not much more than the NV4500. These things have to cost a lot and would kill driveshaft length in a SWB app. I'm sure these are expensive and I have never heard of it fitting anything other than the v10 and powerstroke.

take 1 sm465 add 1 ranger III
or
take 1 sm465 add 1 US Gear

If you're talking about the AA Ranger OD, they have a fairly low input torque rating. As for the US gear unit, as much as I'd love to have one in the DD/tow rig, I think the length would be an issue in a short wheel base rig.

Pete

rated at 420ft lbs and 25000gvw
doesnt seem low compared to commonly used trannies

look in Medium duity trucks for some 6 speeds and 7 speeds

I stand corrected. For some reason, I though it was low 300s.

Pete

Believe me I've researched this top to bottom. I'm building a FJ45LV wagon from one end to the other with a Cummins 6AT3.4 engine and would love a 6spd. But it just isn't going to work unless I stumble over a Chevy type S6-650 in the near future. To get the overdrive and the close split between 3 and 4, a simple 4spd/OD is best (SM420/Ranger for example, or SM465/Ranger or 4spd/Mark's overdrive). I elected to go with NV4500 and AA Rock Box as my "drivetrain lengthener", since with 5.29 gears I should have lots of gettupandgo in 3rd and 4th, even with 36.5" 9.00R16 XZLs.
With the advent of things like the Rock Box and deep doubler boxes, ideas like closer ratio NV3550 5spds and T-6 "car" 6spds become possible with crawl ratios also available.
Charlie

Originally posted by jefe
I ran across this site a while back. It begs more questions than it answers, but has a lot of information regarding their products. I was stuck with how many versions of transfer cases they have, including some way big and strong ones, probably for 2-5 ton applications. That's the rub though, they don't tell you in what applications specifically their products appear. I know my Dodge Cummins has the NV5600 and NV241HD transfer case but what about all the rest? Cool site, none the less. Lots of torque specs.
http://www.newventuregear.com/transmissions.html

ZF6 (H) 5.79/3.31/2.10/1.31/1.00/0.72/ '99 up FORD DIESEL
NV5600 (H) 5.63/3.38/2.04/1.39/1.00/0.73/5.63R '99 up Dodge dsl, V10
regards, as always, jefe

Cool post jefe.
You are a great speller!

I'm looking into a Chevy ZF6 6-speed w/NP263 transfer case and 4.11s mated to a Chevy 383 stroker in a lifted and bobbed FJ60. The wheelbase would allow this to work fine. I've got an '01 Silverado 2500HD with 8.1L V8, ZF6, NP263, and 4.10s, really like this set-up.

Originally posted by ToyDozer

So my new question is will the NV4500 hold up to 510HP and 575 ft/lbs torque??

My NV holds up fine in my tow rig with a 350hp/785 ft lb Cummins.. :D Clutch does not like it but the tranny does... :p

for some reason I was thinking there was an allison under the dodge cummins 3500's.......maybe I'm wrong though, but I could swear that was in the one at the auto show a month ago, didn't get a trans model # though.