When i floor my car off a stop, it feel like my rear end goes side to side. Is there any way to prevent this, i have trouble in the rain when i dont floor it, this happens as well.

 

Verify that your posi system is still functional; do you generate both tire marks when you stomp on the gas?

 

I only make 1 mark, so i think its working

 

Most likely if you see only one mark its not working correctly.This could be the cause of your fish tailing prob.

 

A working posi lays down two strips of rubber.... and will generally only move the car to one side when the tires break loose. "Fishtailing" would indicate a faulty posi and/or some suspension problem.

 

also see if your endlinks are tight on the rear swaybar. also check on the bushings on the axle that hold the swaybar. but i've seen bent panhard bars act the same way. has the car been in an accident?

 

yea one mark means she's gone. My car does it and has a good posi, mine is most likely due to the LCA's being adjustable and i haven't adjusted them yet---i mean they are close, but a little bit goes a long way--difference between straight and not straight. I garentee it's your posi......at the track when my posi was gone.....i'd be heading for the guardrail everytime i did a burnt out in the box.

 

I could be wrong, i never really pay much attention to my marks. My friend told me once that i laid one mark. Ill check in a parking lot in a few days so 2 tire marks is good then? Ill make sure everythings tight in back. The side to side could be normal, im not sure if im just imagining it but there is some.