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Old 03-24-2007, 10:41 AM   #11
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My ratio is 4.56 and my top speed on the governor (25-2600 rpm) was just over 60 before the conversion and just below 60 now fulling loaded. I sure do love that torque converter slip. I wouldn't go any lower than 4.56 with my bus. My 6.6 can actually move the bus with the 4.56 ratio and the 6.6 is an absolutely GUTLESS. I wouldn't mind a 4.44 ratio myself.
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Old 04-07-2007, 11:10 PM   #12
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I made the go on my rear end and brought it in this past monday and went from a 5.57 to a 4.33 which is a big jump for me. Also the catco guys said the international rear end RA39 takes the same internal parts and same carrier for the gears. My short little bus with a non turbo engine seems to handle it just fine although when I pulled my truck home it dogs a little bit but moves alright at 55 against strong wind. I then unhooked the truck and took it out and it went over 65 with the strong cross wind and about 60 against the wind. Well now earlier today I was going to take it west about 90 miles for a one nighter and I went about 10 miles down the road and....

I started hearing some noise and feeling a vibration. My first thought was one of my dayton wheels was falling off. So when I stopped on the side off the road I looked at the wheels and they appeared fine. I then looked under toward the rear end which also looked fine and then I noticed the drive shaft was hanging down by a carrier berring which of coarse is missing the bracket that holds it up with only one bolt left and who knows where the rest of the parts flew off to. Now since it is a easter weekend the truck parts stores had closed early so I couldn't get anything to repair it. TO get it back to the house I took a piece of cable tv cable and tied it up to the mounting position and drove it back. I did look under it when I got back to the house and looked at it and the cab;e held up well and I'm sure I could have gone many more than 10 miles to get somewhere and monday I may be bringing it back to the shop to let them replace it if needed or see if they will just give me the bracket.

So now instead of sleeping in the bus for the night I'm in the brothers front room which isn't too bad but I think I would have been more comfortable in the bus.
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Old 04-08-2007, 11:29 AM   #13
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at least you were able to drive her that 10 miles. There are definately worse places to brake down.
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Old 04-08-2007, 08:55 PM   #14
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Sounds as if they forgot to re-torque the carrier bearing. And yes I would put a new one in there b/c the old one won't last long after being run loose for even a short distance.

What was you old and new rpm at 55 mph? And was there a large difference in the noise level from your engine running slower?
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Old 04-08-2007, 09:29 PM   #15
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Did you do a speedo correction of some type? If not I would atleast calculate out a few key speeds like 55, 65, etc before johnny law does with his radar gun. It takes a lot to pull over an RV, but a bus speeding happily 10 mph over might be enough.
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Old 04-08-2007, 10:31 PM   #16
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The dash used to read 55 at 3000rpms. Now it should be 70 at 3000 rpms. I did manage to hit about 67 for a bit but I was going against wind
They did do the dash program for the speedo and it looks like it might be close but well I really couldn't try it out much cause of a little problem. The tach now looks to be a little haywire too.
At slower speeds it a little bit quieter. Now the carrier Bering that dropped looks like it might be all right but no bracket there to hold it up. And a closer look at the other one reveals that it is gone. The extra force when it dropped took the Bering right out. I brought it back to catco today and just parked it in their lot and will be going back there tomorrow.
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Old 04-08-2007, 10:45 PM   #17
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Where is Catco?
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Old 04-09-2007, 10:11 PM   #18
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http://www.catcoparts.com/ They are around a good part of minnesota and wisconsin along with fargo and siox falls.

I now have two new carrier berings for the drive shaft on catco. These guys sell all kinds of truck parts. I have noticed myself that brake parts can run cheaper there compared to what the auto parts stores want.
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Old 04-10-2007, 12:49 AM   #19
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All over Minnesota..........as long as you don't live in the Arrowhead Region......drat. Atleast I still have Interstate Detroit Diesel and Allison Transmission along with the dealerships. I know there are a few places here in Duluth (living here for the summer), but I don't have any experience with them.
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