SAE Bellhousing and Roadranger

[Cummins360]

Just thought I would ask if anyone ever did this or was planning on doing this??? I would like a few more speeds... say 5 or so?? :-laf

 

[RDupree]

i have a 10 speed RR behind an 8. 3 cummins. the only time i use all the gears is when i tow something real heavy,say 50,000lbs. the rest of the time i skip gears,trust me,it sounds cool to say you have a 10 speed,but your truck will be slow going through the gears,stick with a 5/6 speed,you will be happier.

Randy

 

[Diesel Nut]

If you really want the gears just get a splitter like the US Gear. Much cheaper and easier.

 

[PToombs]

And a 10 speed is bigger than your engine! :--)

 

[Forrest Nearing]

I'd only want 5 more speeds if they were taller than OD! LOL!



I've got a 6sp and I want to go back to a 5sp... would REALLY like to go to an automatic, but will probably just end up w/ a 5sp.



with a 4k GSK and the ability to rev to 3500 or so, you've got almost a 2000rpm powerband... big trucks have about a 500-700rpm powerband, so you gotta have all those gears.



sounds like too much shifting to me, I know my 6sp is!



I'd like to have a 5sp with 1st gear a hair shorter than 2nd gear is now... 3rd gear be direct, about a . 73 OD in 4th, and a . 60 OD in 5th. or you could give it a granny 1st and make it a 6sp. I'd be in heaven

 

[Cummins360]

I'm not looking for lower gears but more of an overdrive would be really nice. I know some of the roadrangers have double overdrive that is why I am mentioning this. I also wanted to point out that a double disc clutch that would fit behind an 855 and could deal with copious amounts of torque and never slip is around $300-$400 wile a clutch for our dodge pickups that can handle less torque is more money!! I just dont understand why?!? It seems stupid that a clutch for are pickups is so much damn money. Someone please explain

 

[Forrest Nearing]

those clutches are huge, less technology/ R&D required to hold at a given torque level, and they can count on a LOT more volume... I bet there are more of those clutches sold per year than the number of dual disk clutches that have been put in dodge rams to date!

 

[12V Ford]

One thing to note on the eatons, is that the ones with 2 OD are usually . 86 and . 73. I have never seen one higher than . 73 and that's the same as the dodge 6 sp. I've got a us gear that I got out of a junkyard for $300, and now my double od ratio is . 58 Oo. . Works great for going real fast :--) .



I do wish that they could make the 6 speeds rated for the high torque like they do with the eatons, but then it would probably weight about 600 pounds too.

 

[benhall]

I plan on going with the RR FSO-6406A. It is rated to ~650 lbs torque and is fully synchronized. There is also the FSO-8406A that is rated to over 800 ft lbs and is fully synchronized as well. Both of these are the same weight and same size. I also know I would be able to find parts for the 6406A pretty easily.



Ben

 

[Bill McFadden]

Does this transmission have a SAE 3 ro SAE 4 bell housing, and do you know the main shaft pilot diminson and lenght for this hook up

 

[bmoeller]

your truck will be slow going through the gears

You need a low inertia Super 13. The one in my T8 is, and it is the quickest shifting one I've driven. Unless pulling a grade, I skip shift loaded on the bottom. Having 500hp helps, too. :-laf

 

[Shadrach]

I have seen a 10 spd in a 93 truck. It was a 2wd but had a body lift on it so it looked like a 4wd. He had to do that because of the flywheel hsg being so much wider than the Dodge adapter on the back on the block. He needed the firewall clearance. Shadrach