1995 4l80e rebuild question
12-24-2018, 11:24 AM
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1995 4l80e rebuild question
Hello, I am rebuilding a 1995 4l80e 4x4 transmission and had a question about some parts interchangeability. I have been looking for new replacement drums such as forward clutch drum,direct drum, overrun drum,front and rear planetary gear set, center support etc. preferably oem. I see some listed to fit from 1991-01 and 97-01. I was wondering if the lip seal style pistons would fit the 1997 drums or if I could use the 1997 style drums in my 1995 4l80e but use the molded pistons and if so would anything else have to be changed to use these newer drums. Any help would be appreciated, thanks for your time. It's not really been easy locating new early style drums with lip seal style pistons.
12-24-2018, 12:52 PM
#2
Why are you looking to change so many parts?
The molded piston can be used in any th400 or 4l80e drum. They interchange.
If you want to dual feed (silly not to do this) Make sure you leave off the center seal, discard the 2nd sealing ring on the center support, and plug the passage to the right of the center support bolt with a 3/8 cup plug.
Your 95 4l80e should have the 34 element sprag but there is a chance it will have a 16 element. You don't need to replace the drum to change sprags. Save the money and just buy a 34 element sprag...the race and drum from the 95 will work fine.
Forward drum came with either molded or aluminum pistons. Your 95 likely has aluminum. They are what I prefer for anything High HP. But if you want to use the molded, it will interchange also.
As for the planets, center support, forward drum, etc...what is your reason for wanting to replace? I can help you with that if need be...but there is hardly ever any reason to swap or replace these.
The molded piston can be used in any th400 or 4l80e drum. They interchange.
If you want to dual feed (silly not to do this) Make sure you leave off the center seal, discard the 2nd sealing ring on the center support, and plug the passage to the right of the center support bolt with a 3/8 cup plug.
Your 95 4l80e should have the 34 element sprag but there is a chance it will have a 16 element. You don't need to replace the drum to change sprags. Save the money and just buy a 34 element sprag...the race and drum from the 95 will work fine.
Forward drum came with either molded or aluminum pistons. Your 95 likely has aluminum. They are what I prefer for anything High HP. But if you want to use the molded, it will interchange also.
As for the planets, center support, forward drum, etc...what is your reason for wanting to replace? I can help you with that if need be...but there is hardly ever any reason to swap or replace these.
12-24-2018, 02:23 PM
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Why are you looking to change so many parts?
The molded piston can be used in any th400 or 4l80e drum. They interchange.
If you want to dual feed (silly not to do this) Make sure you leave off the center seal, discard the 2nd sealing ring on the center support, and plug the passage to the right of the center support bolt with a 3/8 cup plug.
Your 95 4l80e should have the 34 element sprag but there is a chance it will have a 16 element. You don't need to replace the drum to change sprags. Save the money and just buy a 34 element sprag...the race and drum from the 95 will work fine.
Forward drum came with either molded or aluminum pistons. Your 95 likely has aluminum. They are what I prefer for anything High HP. But if you want to use the molded, it will interchange also.
As for the planets, center support, forward drum, etc...what is your reason for wanting to replace? I can help you with that if need be...but there is hardly ever any reason to swap or replace these.
The molded piston can be used in any th400 or 4l80e drum. They interchange.
If you want to dual feed (silly not to do this) Make sure you leave off the center seal, discard the 2nd sealing ring on the center support, and plug the passage to the right of the center support bolt with a 3/8 cup plug.
Your 95 4l80e should have the 34 element sprag but there is a chance it will have a 16 element. You don't need to replace the drum to change sprags. Save the money and just buy a 34 element sprag...the race and drum from the 95 will work fine.
Forward drum came with either molded or aluminum pistons. Your 95 likely has aluminum. They are what I prefer for anything High HP. But if you want to use the molded, it will interchange also.
As for the planets, center support, forward drum, etc...what is your reason for wanting to replace? I can help you with that if need be...but there is hardly ever any reason to swap or replace these.
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