3.73 or 4.30? - 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 11-29-2013, 11:31 AM
Premium Member

 

Join Date: Nov 2011
Posts: 100
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
3.73 or 4.30?

So,

I have done the research on wether or not to regear my Superduty. Everyone seems to have their own opinions and how they ran 4.30's and said it was the best thing they did for the truck. While others say stick with the 3.73s. And 4.10s don't seem to make much of a change.

I do a majority of highway driving at 70mph and it cruises awesome I THINK at around 2000rpm. I hear it is very easy to overgear a diesel and I seldom tow except for the once-a-year tractor for the property and a boat during the summer. I plan on doing meth-injection as well this month so I will have more power so to speak. The tranny is built with a torque converter and deep pan and tranny cooler as well.

Any advice would be appreciated!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 11-29-2013, 11:39 AM
Premium Member
 

Join Date: Oct 2007
Location: Salinas CA.
Posts: 384
Thanks: 3
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
Had the 4:56's in mine and absolutely loved/miss them. Converted to a dually went to 4:88's for pullin. Econo crashed never bought my 45' WW and maybe one day regear or get a Gear vendors OD
Reply With Quote Quick reply to this message
  #3  
Old 11-29-2013, 12:11 PM
Compression Ignition Addict
 

Join Date: Sep 2008
Location: Maryland
Posts: 524
Thanks: 12
Thanked 11 Times in 11 Posts
Feedback Score: 0 reviews
Running 3.73s and have no issues at all. Truck runs great on the highway and cruises easily at 70-75.
Reply With Quote Quick reply to this message
  #4  
Old 11-29-2013, 12:29 PM
Compression Ignition Addict
 

Join Date: Apr 2012
Location: Beaverton
Posts: 572
Thanks: 1
Thanked 4 Times in 3 Posts
Feedback Score: 0 reviews
My OBS was 410s. Way too high geared. My SD is great with 3.73s and 35s, 200rpm at 75 mph. UNless it's purpose built, stick with the 3.73s.
Reply With Quote Quick reply to this message
  #5  
Old 11-29-2013, 01:04 PM
Premium Member

 

Join Date: Nov 2011
Posts: 100
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Quote:
Originally Posted by Gaius View Post
My OBS was 410s. Way too high geared. My SD is great with 3.73s and 35s, 200rpm at 75 mph. UNless it's purpose built, stick with the 3.73s.
Purpose built as in for towing only? The purpose of this rig is everyday use I suppose. And throwing down occasionaly. lol
Reply With Quote Quick reply to this message
  #6  
Old 11-29-2013, 01:28 PM
Compression Ignition Addict
 

Join Date: Jul 2012
Posts: 359
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 0 reviews
Like my 3.73's and i tow often. only about 6K lbs but i never have any issues although i do have a 6 speed and can control my shifting and power.

I wouldn't go any lower than 4:10's unless your really worried bout your 0-60 towing times.
Reply With Quote Quick reply to this message
  #7  
Old 11-29-2013, 01:50 PM
Premium Member
 

Join Date: Apr 2012
Location: Stratford, Ontario
Posts: 2,117
Thanks: 30
Thanked 117 Times in 103 Posts
Feedback Score: 0 reviews
The sweet spot on a 7.3 is 2000rpms...if you do a lot of highway driving youll get best mileage holding 2000 RPM all day.

If you are mostly city you'll get some more pep and better towing going to 4.30's but your highway mileage will suffer as you would be up around 2300 where you would be at 2000 before.

I may re gear because at 90km/h in 4th gear I'm at 2000rpm... I don't even get into 5th unless i"m on a major highway
Reply With Quote Quick reply to this message
  #8  
Old 11-29-2013, 04:17 PM
Compression Ignition Addict
 

Join Date: Oct 2008
Location: Abbotsford
Posts: 2,188
Thanks: 16
Thanked 83 Times in 77 Posts
Feedback Score: 0 reviews
I know it's not quite the same, but this summer I put a set of 33" tires I had lying around on my truck for a couple months.
I cannot begin to tell you how much I HATED it.
I much prefer the lower rpm characteristics of my 35's. I've never had 37's though so I can't really say for sure about that one.
Reply With Quote Quick reply to this message
  #9  
Old 11-29-2013, 06:15 PM
Compression Ignition Addict
 

Join Date: Apr 2012
Location: Beaverton
Posts: 572
Thanks: 1
Thanked 4 Times in 3 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Lambo3244 View Post
Purpose built as in for towing only? The purpose of this rig is everyday use I suppose. And throwing down occasionaly. lol
No, like built for drag racing or sled pulling. Or solely built to tow large loads up and down the Rockies. Then I'd want higher gears.
Reply With Quote Quick reply to this message
  #10  
Old 11-29-2013, 07:03 PM
Premium Member
 

Join Date: Apr 2012
Location: Stratford, Ontario
Posts: 2,117
Thanks: 30
Thanked 117 Times in 103 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Joel View Post
I know it's not quite the same, but this summer I put a set of 33" tires I had lying around on my truck for a couple months.
I cannot begin to tell you how much I HATED it.
I much prefer the lower rpm characteristics of my 35's. I've never had 37's though so I can't really say for sure about that one.
When I was auto with 37's and 3.73's I hated it. The tranny never knew what to do. Once I got a chip it was 100x better though just raised all the shift points and it felt normal then
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 03:31 PM.


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