Thread Tools Display Modes
Old 06-17-2011, 10:21 AM   #1
Bus Crazy
opus's Avatar
Join Date: May 2010
Location: Montana
Posts: 1,614
Year: 1995
Coachwork: Blue Bird
Chassis: All-American R/E
Engine: 8.3 Cummins
Rated Cap: 72
Re: General Questions re 9 L engine

Originally Posted by spatulajones
Hello all,

I have a 1984 full size bluebird bus that i have converted into living quarters for the family. We took it on our first trip earlier this week and it was a success.
Mainly, i was hoping to get better gas mileage out of her and i averaged about 7 mpg. Is there anything i can do to improve the mpg? I'd always heard i could get at least 10 mpg...I'm not sure what sort of ratio i have in the rear, how do i find that out? It has an allison automatic transmission.
I dont think you will get better. Just as you come in the door of the bus there should be tags on the front, telling you serial number and gear ratio, etc.
Also, when i took hills, it would slow down considerably, the tach would read around 3000 on flat ground but i could never really get it above 60 mph, even on downhills. Is this normal for the 9 liter v8? i feel like it should be able to power up the hills better than that...any ideas?
You arent going to power up any hills with that engine.. There were a few I could get 65 out of, but that was pushing it. I bet your gear ratio is pretty low.

i've changed all the fluids and filters before the trip and the engine doesnt smoke or burn oil.
I really like that engine, for that time era. Sure, the DT's are better, but at that time for a V8 NA engine, I have put a LOT of miles on them and never had an issue.
opus is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine and Transmission Questions - looking at two busses bansil Mechanical and Drivetrains 19 07-29-2013 08:39 PM
1991 Carpenter, International 7.3L A170 - General Questions frank-id International | Navistar Drivetrain 9 11-29-2011 06:19 PM
Diesel engine questions. 8.2? KC10Chief Detroit Diesel Drivetrain 10 11-05-2009 09:46 AM
General Help Papabear Conversion General Discussions 7 09-03-2009 09:44 AM
- Diesel engine questions - nevrenufhp Everything Else | General Skoolie Discussions 4 10-18-2008 06:36 PM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:11 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.