Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Display Modes
Old 09-09-2007, 08:10 PM   #1
Bus Nut
Join Date: Sep 2005
Location: Savage, MN
Posts: 472
Year: 1992
Coachwork: Bluebird
Chassis: International
Engine: 7.3 diesel
Rated Cap: 14
Re: Rediculously Slow Rear End Gearing, Enine Problem

I used to run about 3000rpms at about 55mph. Until I had the rear gears change from 5.57 to 4.33 and now I cruise along much nicer and cheaper on fuel. It did cost me almost $2400 to make the swap but I figure after 18,000 miles it will have more than payed for itself.

wmah is offline   Reply With Quote
Old 09-09-2007, 09:31 PM   #2
Bus Nut
KC10Chief's Avatar
Join Date: Jun 2006
Location: Edmond, OK
Posts: 529
Year: 1993
Coachwork: Carpenter
Chassis: International
Engine: 7.3 International diesel
Rated Cap: 60
Re: Rediculously Slow Rear End Gearing, Enine Problem

48 mph? Wow. Mine plods down the highway at 55mph and about 2700 RPM's. I can do 65 but it's over 3,000 RPM's then. I thought about changing the gears, but it is VERY expensive. More than I paid for my bus in fact. I'm going to do the conversion on mine and drive it like it is. If I just can't stand it anymore, I'll change to some better gearing. But my bus is already a dog with its current gearing. Not too much of a problem in Oklahoma though. When I looked into new rear end gears for my bus, it was about $1,500 just for the parts. Geez. And I'm a pretty savvy mechanic and it's not a job I would want to do on my own. I plan to convert this bus and maybe in about 5 years, buying a bigger, newer skoolie to convert. One of the flat front transit skoolie's!
1993 International Carpenter 10 Window bus
7.3L diesel w/AT545
KC10Chief is offline   Reply With Quote
Old 09-09-2007, 10:03 PM   #3
Bus Geek
the_experience03's Avatar
Join Date: Feb 2006
Location: Saint James, MN
Posts: 2,669
Send a message via MSN to the_experience03 Send a message via Yahoo to the_experience03
Re: Rediculously Slow Rear End Gearing, Enine Problem

My 6.6 governs out at ~2600 RPM which is getting me to ~63 mph with 4.56 gears and 10.00R20 tires, the same size you have. Unless you have horribly low gears I don't think that is your problem.

Are you getting all 4 gear shifts? My bus will top out at ~46 mph in third gear. If your linkage is messed up and it isn't shifting into 4th could this be your problem? Your rear axle will have the ratio stamped into it. If it is the Rockwell rear like mine it is stamped on the front passengerside axle tube. Start there and figure out what your ratio is.
Skooling state at a time...
the_experience03 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
Yahoo slow? the_experience03 Everything Else | General Skoolie Discussions 1 03-28-2009 06:22 PM
Slow Computer mercurybluz Everything Else | General Skoolie Discussions 0 03-10-2009 07:26 AM
Rear End Gearing....what is what? oakspring Conversion General Discussions 6 03-26-2007 02:06 PM
Suburban rear heater slow to warm frank-id Everything Else | General Skoolie Discussions 0 01-31-2007 10:40 PM
Gearing - for power, speed, fuel economy? boyscout Conversion General Discussions 0 06-21-2006 05:32 PM

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 01:00 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.