Moose Posted April 7, 2022 Share Posted April 7, 2022 Hey guys, I have 1980 280zx that I’m putting a LS6 engine with a T56 tranny and I was wondering if I should also replace the whole rear end, or just beef it up the u-joints in the half shafts and put in some upgraded stub axels. If I should just upgrade them, where would be a good place to get those parts? I’m planning on using her as a daily driver with maybe a little street racing in Mexico;) What do you guys think would be best? Quote Link to comment Share on other sites More sharing options...
NewZed Posted April 7, 2022 Share Posted April 7, 2022 3 hours ago, Moose said: 1980 280zx the whole rear end, Is it an R180 or an R200? Quote Link to comment Share on other sites More sharing options...
Moose Posted April 7, 2022 Author Share Posted April 7, 2022 It’s a 5 speed manual, so I believe it’s an r200 Quote Link to comment Share on other sites More sharing options...
G-Tech Posted April 7, 2022 Share Posted April 7, 2022 I have a very similar setup (ls and t56). I kept the r200 and put quaife internals in and it has taken all kinds of abuse. It's been 10yrs and I just had a pinion bearing go in the diff. It cost about $500 to have the diff rebuilt with new bearings but that's not too bad. I bought custom stub axles from whitehead performance because I was snapping stub axles. They were pricey and I waited 6months for them but I don't worry about them anymore. And lastly, when I had them made I also had them made to fit 300zxt CV-JOINTS. That is a good upgrade for half shafts...that's my mods and it has been pretty solid. I drag race a few times a year and abuse it on the street too. Quote Link to comment Share on other sites More sharing options...
Mayolives Posted April 7, 2022 Share Posted April 7, 2022 Replace or not to replace. The R200 is a little stronger vs the R180. But there are other choices. It's all about what you can spend. The R200 with Quaife limited slip is a well-tried choice but costly. The Driveshaft shop in Salisbury, NC has a reputation for building axles for go-fast cars and they are easy to work with. They fixed me up when Nissan CD axles would not last long in my road course car. https://driveshaftshop.com/ Quote Link to comment Share on other sites More sharing options...
AydinZ71 Posted April 8, 2022 Share Posted April 8, 2022 (edited) It’s a shame you will be right outside the torque rating for the Subaru R180 LSD swap. It is net 28lbs less than an equivalent R200 LSD. That’s a lot of a spicy meat a balls. at this rate I would consider a 2017 mustang GT automatic super 8.8 rear end. It was cast aluminum structure. I weighed it, and it was only 72lbs. That is equivalent to an open R200! credit to @Invincibleextremes for that tip. Edited April 8, 2022 by AydinZ71 Quote Link to comment Share on other sites More sharing options...
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