i have an 88 dl wagon without lsd is it difficult to put in or do i have to replace the whole diff. p.s. it has the push button 4wd also. how do you check for limited slip differential, the car doesn't run yet but i am getting close just need that darn ecu, and ign relay.

ECU's are a dime a dozen.   Post on here, surely someone has one.  or www.car-part.com

 

LSD's are 3.7 final drive ratio unless you find a converted one.

Transmissions in this era are either 3.7 or 3.9 - which is yours?

 

3.7 final drive transmissions can just bolt a standard 3.7 final drive LSD in place. ;

 

3.9 then you need to swap the LSD chunk into your 3.9 diff.  it's really easy - there's a write up on here on how to do it.

 

If you mean a newer EJ VLSD rear diff - then the answer may differ.

To check if your current diff is LSD:

1) Jack up the rear of the car so that both rear tires are off the ground.
2) Engage 4WD
3) Spin one tire with your hand, if the tire on the other side of the car spins in the opposing direction, yours is a non-LSD.

Learned this trick from MilesFox

Edited March 18, 201511 yr by Sapper 157

thanks i will try that later today,also how do i tell what ratio i have in the diff?