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4L80E rebuild

denata

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4L80E on my H1 august 99'- die (once again ).
Lost 3th and reverse.
Several times I rebuilt, changed the clutches, rings and others
Raybestos and Red eagle, all the same through the duration of the mushrooms burned direct.

What to do , what components to put there to never remove this f***in gear box?
 

denata

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I am looking for a new / old 4l80e . I was offered rebuilded box of gasoline. with a short neck converter. On it ID plate
97 6 267.
How to decipher these numbers?
 

FellowTraveler

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I will not buy a pig in a poke.
I will rebuild myself.
Which clutches are better?
Raybeston.
Red eagle.
Borg Warner.
Exedy.

Maybe other?
I like RED Eagle, however; Raybeston, has a few types that are better suited for the task, but its best too research as to what combinations will work in the 4L80/85 platform...I never built this series always paid very big bucks to have PRO's build them for me.
 

denata

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Ordered all new valves. a set of clutches, a set of gaskets and rubber bands. new pistons in drums. what else need? Ebay sells many kits of obscure sonax and transgo,. which of them will you advise?
Screenshot_2021-01-10-07-18-52-41.jpgScreenshot_2021-01-10-07-18-29-62.jpgScreenshot_2021-01-10-07-17-35-78.jpg
 

FellowTraveler

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I used Sonnax and TransGo combined, Sonnax is more into fixing factory issues for reliability, TransGo is for more pressure and performance. Then there are Billet parts for more strength which can easily dent your budget.
 
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