Fix my 8.5 or Ford 9inch that I found

[pontiacgp]

With a locker there is no lag while the diff locks. Mine is a Lockrite model. It has worked fine, but it was made for a 4x4 truck. I doubt I am putting very much load on it launching at the track.

the Eaton posi is always locked and pressure is needed to unlock it. There are different spring rates with the newer style with 4 springs but I don't think there is any option for the S spring. The S spring is only about $15 so I would be changing that with the clutch packs as well