any 10 speeds that mate to a 5.9 cummins [Archive] -

: any 10 speeds that mate to a 5.9 cummins

04-09-2008, 05:08 AM
I was wondering if there were any applications that would have 10 speed trannies like eaton fuller mounted to a cummins 5.9. I have seen that spicer 7 speeds have been put in f800s. but I have never used one. the whole reason I am asking is for my project 1977 f250 cummins. I like big truck trannies more than pickup trannies they just shift nicer. it is just a thought i am trying to look into. thanks

04-09-2008, 01:01 PM
I have seen a F350 with a 10spd behind it. I would opt for the 13spd myself. Never liked the gearing of the 10.

04-09-2008, 01:02 PM
Not exactly sure, but I would assume that it has a standard #1 or #2 SAE bellhousing? Don't know all details of what size is what, but sure someone here should know.

04-10-2008, 01:19 AM
I was wondering if there were any applications that would have 10 speed trannies like eaton fuller mounted to a cummins 5.9. I have seen that spicer 7 speeds have been put in f800s. but I have never used one. the whole reason I am asking is for my project 1977 f250 cummins. I like big truck trannies more than pickup trannies they just shift nicer. it is just a thought i am trying to look into. thanks

I don't think a twin countershaft transmission will fit in an F-250 unless it is modified beyond belief. Big box trannies are, well, huge.

The best small box single countershaft choice would be a 13 speed road ranger. It's a small box tranny that is likely to fit. Very common, well liked, but hasn't been in production for several years.

I drove an early 90's F-900 tandem with one and I really liked it. Wish I had bought that truck. :damnit

04-10-2008, 05:13 AM
a thirteen spd is fine i have seen two different types. one had low direct and high which i prefer and the other had your high and low with a splitter on the high side. i dont know the proper names though. I have two industrial 6bts to work with so as soon as the is available to have me come get them i will know which housings i have to work with. it sure would be nice to have some gear options so i could cruise empty in the top gear at 70 and 15-1600 rpm. then when i pull any loads i can always drop a gear. thats my thoughts to try for good mileage. I may have 3.55 gears in the back to pull it off tho. thank you guys for your input the quest continues

04-10-2008, 12:28 PM
The F350 I saw, had a twin countershaft trans. The truck had a flatbed and dual exhaust stacks, too.

04-10-2008, 07:28 PM
i think you can mount a 10 speed on your cummins. you can even put a 13 speed on it. Not the 13 speed your thinking of. this 13 speed has like 3 low gears then goes from there..

04-10-2008, 08:20 PM
Just remember the Road Ranger RTLO6613 13 speed only has a 660lb input torque limit. Not much torque before she'll grenade.

04-10-2008, 11:08 PM
why not put a gearvendors OD Box on it you will have your double over to run empty plus it was designed to be shifted on the fly, if you have plenty of reduction in low and reverse, and are just wanting to split the gears and gain a taller high gear its really the best opt. before you go and hack up a good truck I got the G-56 in my pickup I know where your coming from

04-13-2008, 12:00 AM
We have put 3 RT613's in ford pickups. They fit very nice with just a 2" cab lift behind the cummins in anything newer than the 92 F250. The older trucks have to narrow a "hump" to fit it into. I have another 93 F350 in the shop now with a 5.9 and a RTO613 going in it. I can post pics if you like. I also converted this trans from an RT to an RTO. They will not grenade if you hit 'em with more than 650 ft/lbs, that's the continuous rating. You can't blow one in a pickup. We have put at least 900 through one and have never had trouble yet. Remember, it's a heck of a lot tougher than what dodge puts behind em.

04-13-2008, 12:16 AM
Yeah, that's true, 660 ft lbs in a md/hd is a lot different than 660 ftlbs in a pickup.

All that said, it wouldn't be right to not make him aware of the manufacturer's ratings!

Birken Vogt
04-13-2008, 03:20 AM
I am late on this subject but for my money, I would go with a 10 speed (depending on price of course). I drive one every day and I really like it. The 13 speed is nice if you are grinding your way up hills all day at WOT so you can keep the engine in its "just-so" sweet spot but a pickup is more likely to be speed limited by the curves in the road than the grade of the hill. Also the 13 speed is more suited for narrow RPM range motors which the B series is not, it has good power from 1800 to 2600 depending on what flavor you get. I think the splitter on the 13 speed would get used little if at all. If it is the current style 13 speed that is that is like a 9 speed with a splitter on the high side. Refresh my memory, is the RT-613 that way or is it the old style with the 3-position button for deep, intermediate, and high?


04-13-2008, 03:32 AM
Not sure the proper way to list the gears, but here goes. This is for the 613 or 6613 series. This is NOT the same pattern as the larger trans like the 9513 etc.

Low 1,2,3
Med 4,5,6,7,8
Direct 9,10,11,12,13

In a pickup, I usually hit 5,7,9,11,12,13 if I'm empty. Then you have all those extra gears for all those extra times when they come in so handy! 4,6,8,10,11,12,13 is also nice if you need a lower starting gear. The best thing about these is not all the lower gears, but the close spacing at the top. Of course is always fun to blast through every one as you leave the local gas station!! esp if you have jakes.

04-13-2008, 01:32 PM
That sounds like a real interesting & fun business you've got. How many trucks have you customized like that? :Thumbup:

We'd love to see the pictures, but do me a favor: Post them in the MD forums. :thanks:

04-13-2008, 06:17 PM
Pics are good, but VIDEO of you driving one would be better. :cool:

04-14-2008, 02:38 AM
Man am i happy to see all of this feedback. I love it. keep it coming.
Thank you guys very much

04-14-2008, 03:27 AM
Either the RT 610/RTO610 or RT 613/RTO 613 will be a good choice in a pickup, you'll never tear it up .

04-15-2008, 01:14 AM
They have been out of production for a while though.

04-15-2008, 03:31 AM
Ok guys I picked up my two 6BT's yesterday one has the tag on it with a cpl number 1245 the other motor is missing it"s id tag. does anyone know where to look for another way to identify it? the one with the tag is a 95 model with p pump rated at 152 hp @ 2100 rpm. both motors come out of generators. I got a smokin deal on these. :woot: they have been sitting in a semi trailer for 7 years.

My next question is what flywheel housing do I need to bolt up the rto613 or 610? I think these both have the 19 3/4" bellhousings. I see from looking around on the web that there are SAE #1 #2 #3 and #4 bellhousings and I don't know what I need. I can't seem to find any details on any of them. I would like to figure this out so I know exactly what I need to locate. I do have a heavy truck junkyard about 30 miles away that might help me. When I get the name of it I can post the info on here for you guys that might be around Kansas City.

I'm sorry for the long post but you guys know how it is when this is all you think about all day at work.

Thanks again.

04-15-2008, 03:43 AM
You need a SAE No.2 bell. You will also need a 14" push type clutch and flywheel. Most of the baby rangers had push type clutches on them. I have a No.2 cummins back plate and starter here if you need it. Also when you purchase the baby ranger, make sure to plan on spending a day and 200 bucks on replacing the synchro on the intermediate/direct aux gear. Most of them are worn out and they shift terrible like that. You can try it first, because only the aux box has to come off to replace it, so it can be done in the truck.

I'll probably be able to post pics and video here on wed. I've got a DT466E that supposedly blew a cloud of smoke and clunked to a stop yesterday. I just finished replacing broken injector hold down bolts on it, so I'm hoping it's not something I overlooked...

04-15-2008, 04:16 AM
dieselpower... pm sent

04-15-2008, 09:23 PM
Go for an RTO. I think a RTO 6610 would be a good one. Has overdrive and is uprated a little over the standard 610. You will never break one in a pickup without doing something seriously wrong to it. Your tires will break loose long before you can generate the kind of torque to hurt one in a pickup. Maybe if it is pretending to be a medium duty truck with the tires and weight to match but other then that it should be about bomb proof.

04-16-2008, 03:55 AM
By all means, go with an RT-6610 Roadranger.

The last mechanical 5.9s made up to 230 hp and 605 lb-ft torque, still within the limits of the RT-6610.