RPM question - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-02-2007, 03:45 PM
Member
 

Join Date: Oct 2007
Location: perry, fl
Posts: 86
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
RPM question

Would anyone with a similar setup to what I have chime in and tell me how many RPM's your turning at 70 mph, and what gears you have.

Should there be a tag on the rear end(not one on mind), trying to figure out if someone changed the gears.

Thanks in advance
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 11-02-2007, 03:48 PM
Compression Ignition Addict
 

Join Date: Jul 2007
Location: michigan
Posts: 4,241
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
im runnin 38's and at 70 im runnin around 1750 rpms. now my speedo says 60mph but my gps tells me im at 70. this is with 3.73 gears. not sure but you probably have same gears.
Reply With Quote Quick reply to this message
  #3  
Old 11-02-2007, 03:54 PM
Compression Ignition Addict
 

Join Date: Sep 2006
Location: Scituate, Massachusetts
Posts: 1,395
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I have 35's and 3.73 gears. When I'm at 70 MPH the tach is at 2,000 RPM's exactly
Reply With Quote Quick reply to this message
  #4  
Old 11-02-2007, 04:03 PM
Member
 

Join Date: Oct 2007
Location: perry, fl
Posts: 86
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I ment to put this too! I think my speedo is off 8 mph and at 62 I'm running 2200 RPM's. Seemed kinda high to me, but not sure?
Reply With Quote Quick reply to this message
  #5  
Old 11-02-2007, 04:10 PM
Compression Ignition Addict
 

Join Date: Jul 2007
Location: michigan
Posts: 4,241
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
wow that does sound high. maybe you have 4.30 gears.
Reply With Quote Quick reply to this message
  #6  
Old 11-02-2007, 04:14 PM
Compression Ignition Addict
 

Join Date: Sep 2006
Location: Scituate, Massachusetts
Posts: 1,395
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Oh another thing, I often drive by those police speed trap radar signs and the police sign says the exact speed that my speedo says, my speedometer is exactly correct.
Reply With Quote Quick reply to this message
  #7  
Old 11-02-2007, 04:27 PM
Compression Ignition Addict
 

Join Date: Jan 2007
Location: Springfield, OR
Posts: 738
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
it is is off by 8mph and you're going 70 at 2200rpms, i'd guess you have 4.56 or 4.88 gears. thats what these calculators are telling me
Reply With Quote Quick reply to this message
  #8  
Old 11-03-2007, 08:26 AM
Member
 

Join Date: Oct 2007
Location: perry, fl
Posts: 86
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks for the help! When I was looking for a tag on the rear end I noticed a small leak, so it looks like I'll be finding out whats in there the hard way.
Reply With Quote Quick reply to this message
  #9  
Old 11-03-2007, 08:31 AM
Compression Ignition Addict
 

Join Date: Jan 2007
Location: Santa Rosa, CA
Posts: 2,026
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
4spd auto with 4.10's. 65mph at 2000 rpm
Reply With Quote Quick reply to this message
  #10  
Old 11-03-2007, 08:36 AM
Compression Ignition Addict
 

Join Date: Aug 2006
Location: Vernon, Texas
Posts: 3,333
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via AIM to slammedSI Send a message via MSN to slammedSI Send a message via Yahoo to slammedSI
I'm running at 80mph right now. and im turning 2300 qith 3.73
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 12:44 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors