Cummins to Spicer transmission - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 13 (permalink) Old 02-23-2010, 03:08 AM Thread Starter
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Cummins to Spicer transmission

Howdy all - this isn't EXACTLY a diesel conversion, but it seemed like the best place to ask this question.

I've got a '90 Dodge 1 ton with the 5.9 Cummins and stock 727 auto. I want to tow fairly heavy loads long distances, so the auto needs to go. After a lot of research I decided the best option for the price would be a medium-duty 5 speed, Eaton or Spicer being the two real options.

Eatons seem to come attached to Cummins engines a lot more often, but Spicers are WAY more common, and then I found one for $50 so naturally I bought it.

The main problem is that practically every Spicer, this one included, came behind an International engine and has an SAE2 clutch housing. SAE3 flywheel housings for the 5.9 Cummins are the most common, and in fact I have one attached to a loose 5.9 I've got.

THE QUESTION: What's the best way to attach a Spicer 5-speed to my 5.9 Cummins? The main thing is having matching SAE flywheel and clutch housings, but stuff like which clutch, input bearing, spacers, etc. are things I'm unfamiliar with.

Thanks!
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post #2 of 13 (permalink) Old 02-26-2010, 04:22 PM
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first off what spicer did you get. you might be better off selling the spicer, make a little profit, and get yourself a fuller set up. fuller is a better unit on average anyway.. chk your pm's
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post #3 of 13 (permalink) Old 03-01-2010, 07:31 AM Thread Starter
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Thanks for the info! Here's the link for anyone else - http://www.sanco-bg.com/nv5600_conversion_FO8406.htm

Pretty similar swap obviously, but would the parts be the same for a Spicer? The one I got is an older 6352 but they all seem pretty similar. I can't find specs for that exact model but I'm guessing it's the same as the ones in the buses at work, rated at 60k GVW.

I've been looking for Eatons too, and they did seem like a better way to go, but couldn't find one for a good price (don't know how he found a 6 speed for $150). I've run the gear ratios through calculators and I think I should be fine with this trans since the truck came with a 3.07 rear. Might need a higher RPM governor spring to really run it well though, but we'll see.
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post #4 of 13 (permalink) Old 04-25-2010, 12:08 AM
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SAE Bell housings and Flywheels? Confusion.

I've been digging around trying to find our about these. If a Cummins has an SAE #2 bell housing and my Deutz is drilled for SAE #2, then I can use the Cummins bell housing as long as the starter will mesh with the ring gear - right?
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post #5 of 13 (permalink) Old 04-26-2010, 09:17 AM
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Quote:
Originally Posted by DieselSchlepper View Post
I've been digging around trying to find our about these. If a Cummins has an SAE #2 bell housing and my Deutz is drilled for SAE #2, then I can use the Cummins bell housing as long as the starter will mesh with the ring gear - right?

Peut-être ou peut-être pas tout il selon à quelle distance le mécanisme d'anneau est s'aligne avec le mécanisme de démarreur.

Le Deutz et Cummins le modèle de boulon au bloc tous les deux ne sont pas les mêmes du tout, mais pour le volant hébergeant le modèle ouais tous les deux sont les mêmes.

Maybe or maybe not all it depending on how far the ring gear is line up with the starter gear.

The Deutz and Cummins bolt pattern to the block both are not the same at all but for the flywheel housing pattern yeah both are the same.

Merci,Marc

Pas de problème,il marche n'est-ce pas?"(No problem, it works doesn't it?)
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post #6 of 13 (permalink) Old 05-12-2010, 05:10 PM
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I am putting a Road Ranger RTO9513 behind a cummins 5.9, The Flywheel you need is 14” FLYWHEEL, 14" CLUTCH, CASTING # 3908574, BEARING # AB190 (6206) 1 3/4",RING GEAR # AF3903309. I found them on ebay for $195 (item # 230335722221) Any truck junk yard should have a #2 SAE flywheel housing. I was in Dallas at a big truck junk yard they must of had 30 cummins 5.9 with #2 housing on them. If you go buy a Truck Trader at the gas station you will see many advertisements for heavy truck junk yards.

Call me if you have questions

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post #7 of 13 (permalink) Old 06-16-2010, 04:08 PM
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Originally Posted by hayjayhorses View Post
I am putting a Road Ranger RTO9513 behind a cummins 5.9, The Flywheel you need is 14” FLYWHEEL, 14" CLUTCH, CASTING # 3908574, BEARING # AB190 (6206) 1 3/4",RING GEAR # AF3903309. I found them on ebay for $195 (item # 230335722221) Any truck junk yard should have a #2 SAE flywheel housing. I was in Dallas at a big truck junk yard they must of had 30 cummins 5.9 with #2 housing on them. If you go buy a Truck Trader at the gas station you will see many advertisements for heavy truck junk yards.

Call me if you have questions
Pictures please !
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post #8 of 13 (permalink) Old 06-17-2010, 05:21 AM
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I will when I get the time, It is a pain in the *** to down load pics on forums because I have to re size them all. Where do you live?

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post #9 of 13 (permalink) Old 06-18-2010, 12:42 AM
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No need to re-size, just dump em all on Photobucket or a similar picture hosting site. Then, you can dump the link in the thread, and all the work is done for you.

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post #10 of 13 (permalink) Old 06-18-2010, 01:32 AM
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Picasa web works great too, if you have a gmail account.
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