One wheel burn out problem

[Tony01GT]

I have been told clutch packs but does anyone else have an opinion on it. My right wheels leaves a nice mark but no left mark at all...The left spins I've been told but doesn't as much as the other at least not enough to make a mark. I have a 4r70w too, so maybe something else is wrong, I dunno. some one help, it never used to do this! I saw an add in MM&FF for heavy duty clutch packs, should i get these and put them in?
~thanks
Tony

 

[Bullit#3441]

I think you need a new posi like an Eaton or Auburn.

 

[Slider]

I had the same problem with my car. It was the clutch packs in the differential. I replaced them with a new set, and every thing was fine. The clutches cost about $70, and the install was not too hard, mostly just messy.