What is needed to upgrade 4T65E to HD differential?
Thread Starter
Senior Member
Posts like a Corvette
Joined: Jan 2007
Posts: 1,451
Likes: 0
From: San Diego, CA

Forgive me if these answers are already on the forum, but my search didn't satisfy me...
What all parts would be needed to upgrade a 4T65E to the 4T65E-HD differential?
(Taking about the 1998 LeSabre)
I'm thinking HD diffy, HD diffy casing, and probably a passenger'* side halfaxle from a 4T65E-HD...anything else?
What about final drive ratio...I have 3.05 now; isn't that in the differential? I imagine that would change?
(I have a PowrTuner, so I suppose I could reprogram for any changes in the reluctor and or final drive ratio...correct me if I'm wrong)
What should I expect to pay for these parts?
What all parts would be needed to upgrade a 4T65E to the 4T65E-HD differential?
(Taking about the 1998 LeSabre)
I'm thinking HD diffy, HD diffy casing, and probably a passenger'* side halfaxle from a 4T65E-HD...anything else?
What about final drive ratio...I have 3.05 now; isn't that in the differential? I imagine that would change?
(I have a PowrTuner, so I suppose I could reprogram for any changes in the reluctor and or final drive ratio...correct me if I'm wrong)
What should I expect to pay for these parts?
Originally Posted by agrazela
I'm thinking HD diffy, HD diffy casing, and probably a passenger'* side halfaxle from a 4T65E-HD...anything else?
Originally Posted by agrazela
Would I need the HD output shaft?
Would the output shaft on my current trans even mesh with the needed sun gear?
Would the output shaft on my current trans even mesh with the needed sun gear?
Thread
Thread Starter
Forum
Replies
Last Post
buckykattnj
Performance, Brainstorming & Tuning
6
Feb 15, 2011 06:36 AM
SSEi95
Performance, Brainstorming & Tuning
18
Feb 7, 2006 10:41 PM



