what is the difference in the differential i have in my car and the 3 series differential by zexel torsen that SLP sells. is that a limited slip setup? (i do not have the g80 rpo code)

 

The obvious difference is the SLP diff is a limited slip unit. It's a torsen-type of limited slip instead of the clutch type.

 

so is this differential a decent differential or should i buy a more expensive torsen differential theres one at the local drivetrain place for 220 the estimate that i got for the whole rear end setup plus a 342 rear end gear or 373 was $832 if i use their differential and get new berings with it does this sound like too much or is it a decent price

 

The SLP unit is a decent unit.....not neccessarily the best in terms of posi units, but its way better than your stock open unit. For the Price 99bucks you cant go wrong...just make sure you have 28spline axles since it needs em.

 

how hard would it actually be to do the gears myself or with someone who has set them up before i can get the tools for free and i know alot of people who have done this before but i was just wonderin because the cheapest place i have found so far wants 420 dollars for labor and im tryin to not spend so much but if i have to i will and also for the ring gears would you go with a 342 or a 373 ive been told good about both

 

410!!!

 

its a daily driver in the summer i dont want to watch the gass needle move after 50mph

 

I drive 250 miles home (each way) about twice every quarter and i have not really noticed a difference in gas mileage after going from 2.73 to 3.73.

 

Slp unit is great for the price you can not go wrong there.
I have no problems with it:hail:

 

cool thanks i diddnt think the slp unit would be bad for the price i think the one they wanted to sell me was an eaton but if i can save 120 dollars i will

 

just make sure you have the correct axles to use it (28-spline) or you have a line on a set of them, because that $99 bucks could certainly creep up in a hurry if you have to change to 28 spline

 

all the descriptions say that 92 and above have 28 spline axles and i know its a 7.5 inch rearso hopefully it turns out

 

I think they say some 89s but all 90, 91 and 92's came with 28 spline axles. If you have a 90/91 or 92 then you will have the correct axles to use the SLP unit..if you have 89 it is unlikely since most 89's came with 26 axles.

 

For the 8.5 10 bolt, GM went to 30 spline in 89. I dont know about the 7.5.


Charlo

 

what is a mini spool and what does it do is that like adding a locker to the rear it says that it is for open differentials