zf5-zf6 swap - 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 11-05-2012, 05:22 PM
Member
 

Join Date: Aug 2012
Location: Deland, Fl
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
zf5-zf6 swap

how hard would this swap be? Really need a 6th gear lol.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 11-05-2012, 06:53 PM
Compression Ignition Addict
 

Join Date: Dec 2011
Location: Northern Arizona
Posts: 1,885
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 4 reviews
Well, first off overdrive gear in both is about the same ratio just the ZF6 has a much lower first gear. I have driven several ZF6 speed trucks and unless you are towing heavy in the hills first gear is rarely used. If you still want to swap you need a different clutch disc, your transfer case will not fit so then when you use the superduty transfer case your driveshafts won't fit, will need the trans cooler and lines and I believe a different clutch slave cylinder.
Reply With Quote Quick reply to this message
  #3  
Old 11-06-2012, 04:20 PM
Member
 

Join Date: Aug 2012
Location: Deland, Fl
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Soo.. realistically. Not worth it...? Just so high of rpms at 70 and at 3lbs of boost.
Reply With Quote Quick reply to this message
  #4  
Old 11-06-2012, 04:25 PM
Compression Ignition Addict
 

Join Date: Dec 2011
Location: Northern Arizona
Posts: 1,885
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 4 reviews
Realistically, no because overdrive ratio will not change. What gear ratio and size tire are you running? What rpm's are you turning at 70?
Reply With Quote Quick reply to this message
  #5  
Old 11-07-2012, 07:31 AM
Compression Ignition Addict
 

Join Date: Aug 2012
Posts: 201
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
subbed for info...70 with 4.10's is not fun IMO
Reply With Quote Quick reply to this message
  #6  
Old 11-07-2012, 07:43 AM
Delivers Pizzas For Fun!
 

Join Date: Apr 2010
Location: cecil county MD
Posts: 5,694
Thanks: 1
Thanked 10 Times in 8 Posts
Feedback Score: 0 reviews
the zf6 has a slightly lower OD and not as far of a gap between the 3-4 shift.. let me see if i can find numbers

EDIT.....let me try to find numbers from ZF and not off a forum, but here they are

The ratios for the ZF6 are as follows:
Low gear 5.79
1st gear 3.30
2nd gear 2.10
3rd gear 1.31
4th gear 1.00
overdrive 0.72

The S5-42 IDI trans
1st Gear: 4.14
2nd Gear: 2.37
3rd Gear: 1.42
4th Gear: 1.00
5th Gear: 0.77

The S5-47 95-97 trans is
1st Gear: 5.08
2nd Gear: 2.60
3rd Gear: 1.53
4th Gear: 1.00
5th Gear: 0.77

And the wide ratio version of both is:
1st Gear: 5.72
2nd Gear: 2.94
3rd Gear: 1.61
4th Gear: 1.00
5th Gear: 0.76


edit... conflicting info
1st = 5.79, 2nd = 3.31, 3rd = 2.10, 4th = 1.31, 5th = 1.00, 6th = 0.76 Reverse = 5.23

Last edited by ol_Blue97; 11-07-2012 at 07:55 AM.
Reply With Quote Quick reply to this message
  #7  
Old 11-07-2012, 01:42 PM
the baconator
 

Join Date: May 2009
Location: Easton MD 21601
Posts: 11,012
Thanks: 6
Thanked 35 Times in 35 Posts
Feedback Score: 1 reviews
i have both and i agree low is pretty much useless. and you will need a different trans cross member.

i also have 4.10s and have no issues, then again i almost never hit 70
Reply With Quote Quick reply to this message
  #8  
Old 11-07-2012, 04:36 PM
Compression Ignition Addict
 

Join Date: Oct 2009
Posts: 252
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Not to steal the thread but how about changing the diffs to 3.73? I drove a 5 speed the other day with 4.10 and at 70 i was at 2500 rpm. My 2x4 with 3.55 sits at 2300rpm at 85. I was thinking about doing a gear swap had I bought the truck. And what would you be looking at rpm wise with 3.73s? at 70?
Reply With Quote Quick reply to this message
  #9  
Old 11-07-2012, 04:53 PM
Delivers Pizzas For Fun!
 

Join Date: Apr 2010
Location: cecil county MD
Posts: 5,694
Thanks: 1
Thanked 10 Times in 8 Posts
Feedback Score: 0 reviews
I wonder how a zf6 would be with 3.55s and 35s or similar... that low to first shift is difficult on the 6 speed tho..
Reply With Quote Quick reply to this message
  #10  
Old 11-07-2012, 05:17 PM
the baconator
 

Join Date: May 2009
Location: Easton MD 21601
Posts: 11,012
Thanks: 6
Thanked 35 Times in 35 Posts
Feedback Score: 1 reviews
Quote:
Originally Posted by judgesblind View Post
Not to steal the thread but how about changing the diffs to 3.73? I drove a 5 speed the other day with 4.10 and at 70 i was at 2500 rpm. My 2x4 with 3.55 sits at 2300rpm at 85. I was thinking about doing a gear swap had I bought the truck. And what would you be looking at rpm wise with 3.73s? at 70?
there is a formula out there to give you this, i used to know it but have forgotten it.

and frank that shift is not easy

and pulling hills with 3.73 weight in at 20K+ lbs is not fun either the phrase no balls comes to mind. i really wish that dump truck had 4.10s
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 04:38 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