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Old 02-07-2008, 03:51 AM   #1
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Ebay Rx7 rear end

i found an rx7 rear end from a 86-91 car, with a supposed 3.9 and they have it labeled as slip diff, would i be safe to assume that it is the clutch type inside the rear end?
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Old 02-07-2008, 03:55 AM   #2
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The diff should have a metal tag on it which I was told means it is a LSD. The GSL models all had clutch type LSD within those years. For it to have a 3.9 i think it had to be a 84-85 though i could be mistaken.
To be absolute sure, get the vin and call mazda. They can usually tell you exactly what the car had.
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Old 02-07-2008, 04:09 AM   #3
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i know the 84-85 gsl had a solid rear end, and the one I'm looking at is not. I've sent him an email regarding whether it was a non turbo, and if it had a torsen or clutch type lsd, and the only answer i got was that it was non turbo, so i shot him another one, asking him what it was.
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Old 02-07-2008, 09:18 AM   #4
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The automatic RX-7's had a 3.9 rear end. The turbo rear end is a completely different diff in itself.
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Old 02-07-2008, 10:03 AM   #5
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I do know the 84-85 GSL is a 3.909 and the 84-85 GSL-SE is 4.08.
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