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Discussion Starter #1
So I am pulling the rest of the stuff off a 82 Supra im scrapping, I confirmed on the firewall its got the code F303 with a 3.72 limited slip but I cant find any codes directly on the diff itself, I was going nuts trying to find something to no avail...
 

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With the diff out of the car so both side shafts rotate, spin both side shafts at the same time 10 times and count the number of times the input shaft spins;

37 and a quarter or so times, means 3.73 (actually 3.727)
39 means 3.90
41 means 4.10
43 means 4.30

It should have a sticker on the aluminum cover if it is LSD, although it can be missing on an older car.
 

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Discussion Starter #3
With the diff out of the car so both side shafts rotate, spin both side shafts at the same time 10 times and count the number of times the input shaft spins;

37 and a quarter or so times, means 3.73 (actually 3.727)
39 means 3.90
41 means 4.10
43 means 4.30

It should have a sticker on the aluminum cover if it is LSD, although it can be missing on an older car.
Dam bro that's awesome your like the mighty supra book of wisdom lol... I really appreciate that im going to give it a go, the diff appears like it was never removed so hopefully its the correct one :)
 

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IF your really lucky find a RA65 LSD 1985 GTS only... 3.90 ratio F313?? IIRC
 

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LSD fairly rare, non-LSD in most RA Celica...
 
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