Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > Vintage RV's
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 03-09-2016, 06:38 PM   #1
Fleetwood Owners Club
Join Date: Feb 2011
Location: South Sioux City, NE
Posts: 56
Tach RPMs

1990 Flair 460 motor. at 55mph my tach says 4500-5000 rpm... would you suspect tach itself, or engine problem? Any idea what it should run at? Thanks

oldguyrich is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-10-2016, 12:29 AM   #2
Senior Member
guardrail53's Avatar
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 1,208
If I can remember right, my two older gas MH's without OD, the tach read around 3000 RPM at 60 MPH? I would suspect the tach is not reading right, or you have a transmission slipping badly! Rail!

Retired, and "Always on Holiday!"
1996 Monaco Windsor 38' "Mona"
guardrail53 is offline   Reply With Quote
Old 03-10-2016, 01:03 AM   #3
Registered User
Join Date: Nov 2015
Posts: 1,778
What tranny do you have............3 speed?

What rear end gearing.........4:56?

3000 RPM of under at 60 mph

For 1990 460 V8
Peak torque is at 2200 RPM
Peak horsepower is at 3600 RPM

4500-5000 RPM on a 460 V8..........BOOM!
Long stroke------piston thru block

Besides it would be SCREAMING at those RPM
Old-Biscuit is offline   Reply With Quote
Old 03-10-2016, 05:38 PM   #4
Fleetwood Owners Club
Join Date: Feb 2011
Location: South Sioux City, NE
Posts: 56
Thanks guys. that's what I was worried about. Trans is a 3 speed, no overdrive. don't know the gear ratio. Now to find someone to check it without costing 175.00. the motorhome is 22' and i get 10mph per gallon. Gonna have to find out how to hook up a different tach to check the other one.

as far as shifting, it revs pretty high, but not excessively, between 1st and 2nd. then between 2 and 3 you cant tell it shifted at all. Never really settles down between gears....
oldguyrich is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Monitoring Engine RPMS when accellerating frederick w iRV2.com General Discussion 19 11-30-2010 10:31 AM
climbing rpms picayune2 Workhorse and Chevrolet Chassis Motorhome Forum 5 06-29-2010 03:54 PM
high rpms?? southerndog Winnebago Industries Owner's Forum 15 08-26-2008 01:13 AM
RPMs on 2000 D Colesmeister Fleetwood Products Owner's Forum 4 07-27-2006 02:45 AM
high rpms?? Ford Motorhome Chassis Forum 15 12-31-1969 07:00 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:18 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.