I was just wondering wherew i could get information and maybe compare the diffrences between my stock 1988 13b engine and a tri rotor twin turbo j-spec engine, and where i could get it. I alo would like to get rid of my limited slip dif where could i find a posi trac diff for around 5 bills

 

you're kidding right?

posi is just chevy's name for limited slip...

 

I was thinking the same thing. Isn't a posi trac rear end exactly the same as the clutch type LSD found in some of the series 4 cars?

 

What? really.... Um, i though posi both wheels spin no matter what, and heard it sucks around corners. chirpin...

 

Posi is not a fully locked rearend, which squeals around corners and is HORRIBLle on tires and axels. There are plenty of different types of differentials, but posi-traction is just chevy's name for a clutch-type LSD.
Sean

 

Take a deep breath and visit the 20B Forum.

 

You're thinking of a spool, which is not a differential at all, it's just something that the ring gear bolts to and the axles slide into. No differential action whatsoever.

There's also the welded diff AKA "Lincoln Locker" (named after Lincoln-brand welders) which is the same basic thing except not as strong. The gears in an open diff are welded together for the same effect as a spool.