School Bus Conversion Resources

School Bus Conversion Resources (http://www.skoolie.net/forums/)
-   Conversion General Discussions (http://www.skoolie.net/forums/f13/)
-   -   NEED OPINON ASAP on new bus (http://www.skoolie.net/forums/f13/need-opinon-asap-on-new-bus-8706.html)

Bus dad 08-30-2013 06:01 AM

NEED OPINON ASAP on new bus
 
We currently have a 36 ft TC 2000 Front engine wiht a 545 and 4.38 rear end. Mileage is 10-13 depending n speed ( rpm) 55- 13 65 -10. We max out at 68-70 ( flat nose wind dependent) We are planning on buying a pusher next week but it is a high ceiling 40ft with a newer 5.9 (not isb) with a 643 and 4.78 rear end.
Can anyone tell what speed/mpg to expect form a 40 foot BB Rear with a 5.9 643 tranny and a 4.78 rear end. We will be driving it back from out west.
I am having concerns since I have read some post where this rear end they had the tach buried to go 62. But I did not know that "posts" tranny.
Will the 643 get better mpg/speed than the 545 even though they are both 1:1 since it is lockup

What kind of mileage with this config @ 55-60????

opus 08-30-2013 10:25 AM

Re: NEED OPINON ASAP on new bus
 
Shooting from the hip; I dont think you are going to do as well as the bus you are replacing for mpg or speed. The 643 is however a huge improvement.

You are adding height and length, which is weight and resistance.

crazycal 08-30-2013 09:39 PM

Re: NEED OPINON ASAP on new bus
 
Every bus is different even with the same specs. I doubt the tach would be pegged with a MT643 and a 4.78 rearend @ 62 mph. The 643 is way better than a 545 on the freeway.

Motobus 08-31-2013 12:14 AM

Re: NEED OPINON ASAP on new bus
 
Is the tire size the same?

Bus dad 08-31-2013 08:11 AM

Re: NEED OPINON ASAP on new bus
 
Wow what a last 24 hrs. We looked at 40 in Detroit and realized to long. As a long shot we happen to look at inter w 466e and 5speed md3060. Now get this it was geared to do 65 @ 1650 rpm. It did have some rust. It drove better than bb, turned sharper and quieter. I know most like bb. I was a die hard 5.9 guy but to get a world tran 1650 rpm for 3500 with some rust. Any opinion on 2001 int amtran w 466e

opus 08-31-2013 11:32 AM

Re: NEED OPINON ASAP on new bus
 
The DT is a great engine! Economy won't be as good as a Cummins but I wouldn't let that turn you away. Can't comment on the amtran part, those were after my skoolie service days.
That's a nice gearing setup.

bansil 08-31-2013 06:12 PM

Re: NEED OPINON ASAP on new bus
 
Any tranny is better than the slip-o-matic 545....466 is a sleeved engine correct,which means you can do an in frame.....
Mileage I don't think will be different....but! I "think" jakes can be added to the 466...am I right?

turf 09-01-2013 08:54 AM

Re: NEED OPINON ASAP on new bus
 
Quote:

Originally Posted by bansil
the slip-o-matic 545....

:lol:

x2 :?


the one with a retarder would be my pick

bansil 09-01-2013 05:10 PM

Re: NEED OPINON ASAP on new bus
 
Quote:

Originally Posted by turf
Quote:

Originally Posted by bansil
the slip-o-matic 545....

:lol:

x2 :?


the one with a retarder would be my pick

Is that the shorter one :mrgreen:

opus 09-01-2013 10:03 PM

Re: NEED OPINON ASAP on new bus
 
After using both, I would choose the retarder.


All times are GMT -5. The time now is 08:13 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.