10 speed to 5.9 cummins - Dodge Cummins Diesel Forum
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post #1 of 41 (permalink) Old 12-22-2009, 09:00 AM Thread Starter
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10 speed to 5.9 cummins

so me and my buddy are doin a 78 dodge crew cab converison with a cummins in it but will a 10 or 13 speed eaton fuller bolt right up to the 5.9 cummins? It its gunna be our tow rig to the sled pulls and we wanted to throw a big semi tranny in it


91 W250 5 speed Built trans lots of fuel lots of air south bend clutch denny T stage II 5 inch exhaust traction bars
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post #2 of 41 (permalink) Old 12-22-2009, 09:31 AM
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think that u can get 10spd that will i think they were in some frieghtliners with 10spd

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post #3 of 41 (permalink) Old 12-22-2009, 10:00 AM
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get an SAE block plate, and you can bolt damn near anything to it

don't know why you'd want to, but more power to ya
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post #4 of 41 (permalink) Old 12-22-2009, 10:13 AM
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i think you can do a ten. theres a you tube video with a 2nd gen dually and a ten speed

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post #5 of 41 (permalink) Old 12-22-2009, 12:53 PM
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seems like a huge waste of time/effort to me, but:

http://www.youtube.com/watch?v=2CG0Y...eature=related
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post #6 of 41 (permalink) Old 12-22-2009, 01:59 PM Thread Starter
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it might take some time but it would be cool and he has to money to do it thanks for the replys and video

91 W250 5 speed Built trans lots of fuel lots of air south bend clutch denny T stage II 5 inch exhaust traction bars
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post #7 of 41 (permalink) Old 12-22-2009, 02:03 PM
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i actually saw a video of a crew cab with a ten speed in it. ill try and find it

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post #8 of 41 (permalink) Old 12-22-2009, 02:07 PM
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unless you're towing VERY heavy with stock horsepower rating, I see no need to shift that many friggin' times! LOL
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post #9 of 41 (permalink) Old 12-22-2009, 04:30 PM
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A lot depends on your axle ratio. With 4.10 it would be a waste of time. With 3.54 and a standard governor spring it would be somewhat desirable but with any taller gearing, specially if you plan to tow heavy, it would be real nice to have ten gears plus there is the durability of the Eaton-Fuller which would be unreal. Remember that as your rear-end gearing gets taller, the gap between the gears gets more troubling and making extra gears more necessary.

When my truck had 4.10 gearing I could easily shift up on steep hills because the jump to the next gear was not great. After I put in the 3.54 I found that the gap was too wide sometimes. The governor spring upgrade gave me the rev's so that I was able to make the shift up ok. The governor spring made up for the downside of the taller rear-end ratio plus it let the cummins keep its rev's up and reduce heat build-up, a critical issue for a non-IC'd cummins.

Also remember that just because you have ten gears doesn't mean you have to use them all of the time. You can make like you have a five speed when you are not pulling hard.

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post #10 of 41 (permalink) Old 12-22-2009, 10:17 PM
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I do like the idea of going to an industral transmission. I'd pass on the 10 speed unless it had a Georgia overdrive, that would be sweet!
The mini wheeler dump trucks use an 8 speed with a low gear. You could start in 3rd or 4th. AND you'd get 2 revearse gears!!

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post #11 of 41 (permalink) Old 12-22-2009, 11:27 PM
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you'd probably only use 5 or 6 of the gears while unloaded anyway. unless you really like rowing... I'll take one

1992 W250, nv4500, Club Cab
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post #12 of 41 (permalink) Old 12-23-2009, 12:50 AM
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Quote:
Originally Posted by luckystars View Post
I do like the idea of going to an industral transmission. I'd pass on the 10 speed unless it had a Georgia overdrive, that would be sweet!
The mini wheeler dump trucks use an 8 speed with a low gear. You could start in 3rd or 4th. AND you'd get 2 revearse gears!!
every truck has a Georgia overdrive... also known as Mexican overdrive
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