Well in my GTU I have LSD, from what I read only GTU's and Turbo's have LSD. When I do burnouts, Its always two solid marks, so I belive I have LSD so how can I tell wich rear end I have?

GXLs as well

Chances are 100:1 that it's a 4.10 ring gear.

you can mark the pinion and spin it. the driveshaft on the 4.1 wil spin 4.1 times to the wheels 1. chances are you dont have lsd either. you can check it in the air



mike

how can I check lsd in the air?

use two jack stands like mine is currently on. I have an 88 TII with lsd. https://www.nopistons.com/forums/pub...DIR#>/wink.png

i kno that but what do i do just rotate a wheel and one shouldnt spin the opposite direction?

correct, provided the car is in neutral. ... with enough resistance on the pinion the other side will turn in the opposite direction, it also depends on the condition of the diff (clutch wear, fluid etc)



the LSD's have a tag on the filler hole plug that says LSD fluid only, unless it's been removed.

ok, well when i turn one only one turns foward. the other just sits there, and if i turn the drive shaft and hold one wheel the wheel that is being held kida kicks.



But can a car that doenst have lsd do a two wheel burn out?

if the other just sits there with the car in neutral, when you turn one, you likely have a standard differential, because this would require differential action for it to happen, the pinion and side you are turning are rotating, and the other wheels side of the differential is staying still, which means... no clutches are introducing significant friction between the two sides of the differential (or they are seriously worn), it's most likley you do not have LSD.





and yes, you can get both wheels spinning with a car that does not have LSD if they both have similar levels of traction and you dump the clutch.