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Old 07-18-2004, 06:48 PM   #11
Bus Nut
 
Join Date: Feb 2004
Location: Idaho
Posts: 448
The DT466 is probably the best engine that International/Navistar makes. If I remember correctly the DT466 comes up to 230HP. If you get a rear end that is in the 4:10 or even 4:56 would give you a much higher top speed. You will have to know what the HP is before you choose a rear end.
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Old 01-20-2005, 01:38 AM   #12
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Join Date: Jan 2005
Location: Spotsylvania, VA
Posts: 1
I too just got my bus this past Aug. and have big plans for it :D . This is my first bus conversion, so I pray that any mistakes won't be major blunders. For you folks who want to know the specs, here you go-

1981 IH Blue Bird 64 passenger bus.
345 cu in (gasoline) engine with 5 speed manual trans.
34 feet 4 inch long (bumper to bumper)
was bus no. 161 ran for the Spotsylvania County Public Schools
was 23,660 lbs. (before I removed all but 3 benches)

I decided to keep 2 full size benches for a booth dinette and 1 2/3 size bench for a regular passenger seat.

I'm currently looking to replace my current 345 engine for a diesel one.
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Old 01-20-2005, 09:56 AM   #13
Bus Crazy
 
Join Date: Oct 2004
Location: New England
Posts: 1,009
Year: 1993
Coachwork: Ward Genesis
Chassis: International
Engine: DT466/MT643
Rated Cap: 77
Quote:
Originally Posted by lapeer20m
Congrats on the bus !
I see you've encountered the same problem almost all of us have: SPEED.
the speed of your bus is equal to that of almost all diesel skoolies. My best advice: Get used to driving 55.

It's probably gonna cost in excess of $1,000 to change the ring gear thus increasing top end speed. The problem you might have after changing the gearing is not enough engine. I assume you have a 7.3 V8 non turbo diesel? This is the same engine used in ambulances and Ford F-series trucks during the early 90's. We have this engine in our "ambulance" on the fire department. it has a Ford truck front end with a big ambulance box on the back. This truck will barely do 65 downhill. IF it were a skoolie, it would weigh nearly twice as much making anything over 55 or 60 impossible. I believe our ambulance has a 4.10:1 rear end and an automatic trans with OD.

If the engine in your bus is a turbo, it may have enough power to do what you want. The newer ambulances will run circles around the non-turbo models.

Good luck!
With 22,800 hours on a 7.3 non-turbo, my friend's Ford E-350-scahhis cutaway shuttle bus/hauler will run 65 all day.

My B-700 will run 75, but it may have been re-geared (and has been repowered).
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Old 01-20-2005, 09:58 AM   #14
Bus Crazy
 
Join Date: Oct 2004
Location: New England
Posts: 1,009
Year: 1993
Coachwork: Ward Genesis
Chassis: International
Engine: DT466/MT643
Rated Cap: 77
Quote:
Originally Posted by busone
The DT466 is probably the best engine that International/Navistar makes. If I remember correctly the DT466 comes up to 230HP. If you get a rear end that is in the 4:10 or even 4:56 would give you a much higher top speed. You will have to know what the HP is before you choose a rear end.
Actually, you can get the DT466 up to 275HP.
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