I saw on thunder racing that the moser nine inch rears available for 4th gen f-body are available with either a spool or a posi. Can someone tell me the difference between the two?

 

Im not positive on this so dont take this as final answer...Posi is both wheels and I think spool is like limited slip (Im not sure on it and I may be WAAAAY off...) hopefully others will post up...I would like to know as well...TTT

 

No, posi's have the ability to allow the wheels to turn at different speeds when going around corners and such. Spools lock the axles so they always go in the same direction at the same speed, making them ****ty for street use. Spools are pretty much track only.

 

thanks guys

 

here is a pic of my spool in my moser third member, theres no way the 2 wheels will turn at diffrent speeds there locked, kinda a pain on the street but will take what ever power you can put to it

 

I have a locker in my rear. It is a mix between posi and a spool. The posi allows both wheels to spin at different speeds regardless of braking or acceleration.

The spool locks both wheels together and forces them to spin at the same speed regardless of braking or acceleration.

The locker allows both wheels to spin at different speeds WHEN NOT accelerating. When accelerating it locks the rear axel and forces both wheels to spin the same speed.

 

I ran a spool in my 9 inch on the street becasue I was trying to save alittle money. If you do any street driving I would recomend not using a spool, like said earlier they are for track use only. I replaced my spool with a Detroit TruTrac Posi and really like it. It is a non clutch type posi that has very good street manners, it may cost little more but well worth it.

 

"The locker allows both wheels to spin at different speeds WHEN NOT accelerating. When accelerating it locks the rear axel and forces both wheels to spin the same speed"

so does this mean if you are powering out of a curve, or a turn, it will lock? which would make fishtailing very easy...and dangerous.

 

This is true... it's interesting to drive a Locker on the street.

 

You got it Not to mention it freaks the hell out of people when they hear it engage and feel it hit when they don't know its in there. Me personally, I'm so use to it I can't even hear it anymore. I'm also use to it, so I know how to drive on the street to keep it well mannered.