NHRATA01

iTrader: (10)

Ok, this is purely out of curiousity, because thus far I'm happy with the Eaton posi, and I don't really see my car ever becoming a purely track car, or something that doesn't get driven at least 3 times a week. But who knows what may change down the road.

Anyways from what I've read, I got the impression that the only options for a 12 bolt were the posi or a spool, and no lockers were availible. Well, an off-roader directed me to powertrax.com and lockright.com, and both those sites offer a powertrax locker for a GM 12 bolt, albeit 30 spline only. I know people must be aware of this, so what is it about those lockers that doesn't work since no one uses one? Too weak? Don't fit? Just wondering...

kp

iTrader: (34)

Those fit inside the case case I believe, you need to start with a stock open case and add the powertrax unit - I would imagine its not made for drag racing. As far as I know no one makes a locker for a car 12 bolt.

LOnSLO

iTrader: (15)

I raced the hell out of my Powertrax locker. I had it in a 9 inch though. From what Powertrax says, it is rated at 1000 hp. Never had an issue with it at all.

kp

iTrader: (34)

I dunno, I have installed them in a couple 12 bolt street cars and they didnt seem very stout. I thought they mentioned right in the instructions that they were not intended for drag racing.. Could be wrong though, been a while.