Rear diff question - Page 2 - Dodge Challenger Forum: Challenger & SRT8 Forums
Drivetrain In this section, you can post up anything in regards to the transmission, differential, etc.

Reply
 
LinkBack Thread Tools Display Modes
post #11 of 19 (permalink) Old 02-02-2019, 06:43 PM Thread Starter
Senior Member
 
Mobiuscorpus's Avatar
 
Join Date: Mar 2018
Posts: 380
Thanks: 3
Thanked 52 Times in 43 Posts
Garage
Feedback Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by White R/T View Post
Quote:
Originally Posted by Mobiuscorpus View Post
Here you go. This is the open diff that came out of my 17 R/T 5.7 A8.
I did a search for the part# and it comes up as 3.08 open...New to me...I have never seen that ratio before.
Same here. I had no idea.
Mobiuscorpus is offline  
Sponsored Links
Advertisement
 
post #12 of 19 (permalink) Old 02-02-2019, 07:44 PM
Senior Member
 
Frank Julian's Avatar
 
Join Date: Jun 2015
Location: Ohio
Posts: 4,060
Thanks: 749
Thanked 799 Times in 609 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Mobiuscorpus View Post
I’m swapping my 2017 R/T A8 diff for a Scat Pack 3.09 LSD. I have the R/T diff out which I though was supposed to be a 2.62 open unit. But the label says 3.08 open. I haven’t heard of that ratio. Am I wrong? Do I have a weird car?
do you have to switch the half shafts too?
Frank Julian is offline  
post #13 of 19 (permalink) Old 02-02-2019, 07:46 PM Thread Starter
Senior Member
 
Mobiuscorpus's Avatar
 
Join Date: Mar 2018
Posts: 380
Thanks: 3
Thanked 52 Times in 43 Posts
Garage
Feedback Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by Frank Julian View Post
Quote:
Originally Posted by Mobiuscorpus View Post
I’m swapping my 2017 R/T A8 diff for a Scat Pack 3.09 LSD. I have the R/T diff out which I though was supposed to be a 2.62 open unit. But the label says 3.08 open. I haven’t heard of that ratio. Am I wrong? Do I have a weird car?
do you have to switch the half shafts too?
No. All I needed was the differential.
Mobiuscorpus is offline  
The Following User Says Thank You to Mobiuscorpus For This Useful Post:
Frank Julian (02-02-2019)
Sponsored Links
Advertisement
 
post #14 of 19 (permalink) Old 02-02-2019, 07:56 PM
Senior Member
 
Join Date: Jul 2010
Location: southern Wi
Posts: 389
Thanks: 16
Thanked 98 Times in 74 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Mobiuscorpus View Post
No. All I needed was the differential.
Have you driven it yet ?
White R/T is offline  
post #15 of 19 (permalink) Old 02-02-2019, 07:57 PM Thread Starter
Senior Member
 
Mobiuscorpus's Avatar
 
Join Date: Mar 2018
Posts: 380
Thanks: 3
Thanked 52 Times in 43 Posts
Garage
Feedback Score: 0 reviews
(Thread Starter)
I have. I didn’t get to really wring it out and test the performance though.
Mobiuscorpus is offline  
post #16 of 19 (permalink) Old 02-02-2019, 08:29 PM
Senior Member
 
Tshane72's Avatar
 
Join Date: Jun 2013
Posts: 1,798
Thanks: 130
Thanked 249 Times in 228 Posts
Feedback Score: 0 reviews
My 2013 R/T has that diff and yes with the 3:08 ratio. I have always been told though that you have to get new axles as well when you goto a LSD...or so I thought. I also have BMR rear upper control arms and lateral control arms. Good stuff!


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Living my life....one quarter mile at a time
Tshane72 is offline  
post #17 of 19 (permalink) Old 02-02-2019, 08:51 PM Thread Starter
Senior Member
 
Mobiuscorpus's Avatar
 
Join Date: Mar 2018
Posts: 380
Thanks: 3
Thanked 52 Times in 43 Posts
Garage
Feedback Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by Tshane72 View Post
My 2013 R/T has that diff and yes with the 3:08 ratio. I have always been told though that you have to get new axles as well when you goto a LSD...or so I thought. I also have BMR rear upper control arms and lateral control arms. Good stuff!
You have the older Getrag diff, so I don’t know what, if anything, is different for you. Starting in 2015, they changed the diff to one made by ZF.
Mobiuscorpus is offline  
post #18 of 19 (permalink) Old 02-02-2019, 09:06 PM
Senior Member
 
Join Date: Jul 2010
Location: southern Wi
Posts: 389
Thanks: 16
Thanked 98 Times in 74 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Mobiuscorpus View Post
I have. I didn’t get to really wring it out and test the performance though.
I've installed a few new ZF LSD's and even though there's no specific break in that I've seen and it may be a bit old school but a few heat cycles are not a bad idea before hammering on it. 25 miles then complete cool down 3-4 times will help with gear whine and longevity.

Last edited by White R/T; 02-02-2019 at 09:09 PM.
White R/T is offline  
post #19 of 19 (permalink) Old 02-02-2019, 09:11 PM Thread Starter
Senior Member
 
Mobiuscorpus's Avatar
 
Join Date: Mar 2018
Posts: 380
Thanks: 3
Thanked 52 Times in 43 Posts
Garage
Feedback Score: 0 reviews
(Thread Starter)
Quote:
Originally Posted by White R/T View Post
Quote:
Originally Posted by Mobiuscorpus View Post
I have. I didn’t get to really wring it out and test the performance though.
I've installed a few new ZF LSD's and even though there's no specific break in that I've seen and it may be a bit old school but a few heat cycles are not a bad idea before hammering on it. 25 miles then complete cool down 3-4 times will help with gear whine and longevity.
Mine was used, so if it wasn’t broken in properly, it’s too late now. 😉
Mobiuscorpus is offline  
Sponsored Links
Advertisement
 
Reply

  Dodge Challenger Forum: Challenger & SRT8 Forums > General, Performance, and Technical > Performance Modifications > Drivetrain

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Challenger Forum: Challenger & SRT8 Forums 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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Real results with rear diff change? 15SRTKB Drivetrain 2 07-13-2017 06:43 AM
Changing the Rear Diff Fluid Nuke How-To, DIY and Tips & Tricks 26 04-03-2017 08:43 PM
Rear Diff ? 15SRTKB Bolt On's 3 02-11-2017 05:32 PM
Rear diff fluid for 09 r/t auto w/ 3.73 gears jjchambers Dodge Challenger R/T Specific 1 07-20-2012 10:13 AM

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

 
For the best viewing experience please update your browser to Google Chrome