gear ration 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 02-01-2006, 04:12 PM
Powerstroke.org Rookie
 

Join Date: Jan 2006
Posts: 23
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
gear ration question?

i got a question.... in my 97 ps when i'm headed down the freeway at round 75 or 80 the rpms are just running really high. if i changed the ring and pinion out i know that will help, but is there anything else i can do. jus wondereing and on these trucks how many rpms are too much??
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 02-03-2006, 06:48 PM
Premium Member
 

Join Date: Oct 2005
Location: Akron, OH
Posts: 607
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via ICQ to overl0rd Send a message via AIM to overl0rd
As long as you're not running a chip that removes it, the truck has a speed limiter and governor in it. You can get an auxillary over/under unit, but their durability is up in the air. Its been my experience that the unit turns into the weakest link in the driveline. What kind of revs are you turning at those speeds? In my pickup with 3.54s I turn around 26-2700 or so.
Reply With Quote Quick reply to this message
  #3  
Old 02-03-2006, 08:15 PM
Banned
 

Join Date: Jan 2006
Location: central coast, california
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by DIESELMAN7.3
i got a question.... in my 97 ps when i'm headed down the freeway at round 75 or 80 the rpms are just running really high. if i changed the ring and pinion out i know that will help, but is there anything else i can do. jus wondereing and on these trucks how many rpms are too much??
if its a manual....you could have a custom built trans done.....but more money than a ring and pinion would cost.......other than that.....you are basically limited by the fact that diesels run less RPM's....and only a gear ratio change in the trans or rear end will make it run less.....as overlord asked...what RPM's are you running .....and i curious what gear ratio you have in the rear diff....and also...is your unit 4x4....because you would have to change both ring and pinons if it was........Marc
Reply With Quote Quick reply to this message
  #4  
Old 02-06-2006, 05:30 AM
Member
 

Join Date: Nov 2005
Location: Bandera, Republic of Texas
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I dunno. Mine's a 3.73 limited slip, and it runs exactly 2,000 RPM at 70 MPH.
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 04:02 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