1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

SE diff swap question

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Old 04-10-08, 06:38 PM
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SE diff swap question

i'm looking to swap a full SE rear end into my GS. i know the proportioning valves are different but what i'm curious about is the hard brake lines. will my GS hardlines reach all the way to where i hook my SE soft lines up to (btw i'm replacing these with steel braided)? much appreciated.

dave
Old 04-10-08, 06:48 PM
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81-85 the same if you plan on replacing the soft lines make sure to order the right year and if disc or drum.
Old 04-10-08, 06:52 PM
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wicked. my cars an 81. so the hardlines will hook up to the softlines in the SE diff. i just have to get the SE proportioning valve?
Old 04-10-08, 07:06 PM
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they should the are the same thread pitch , not sure if you need the proportioning valve it was recomended to me to put it on my 79 sa when I did the swap.
Old 04-10-08, 07:27 PM
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great news. thanks man. i'm off to go get me an SE diff.
Old 04-10-08, 07:32 PM
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oh geez. just had another thought. driveshaft? will it bolt up?
Old 04-10-08, 07:42 PM
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-SE Diff has the large flange, 81' will have the small flange.
Large flange is 83 1/2 -85 cars, not sure if that was with or without LSD models.

So no, your 81' drive shaft will not bolt to a -se diff.
Old 04-10-08, 07:50 PM
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alright...i think i've got an SE driveshaft hidden in my garage somewhere. will that slide into the tranny?
Old 04-10-08, 08:20 PM
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Yes it will
Old 04-10-08, 08:23 PM
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we're in business.
Old 04-11-08, 12:14 AM
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