I know nothing about axles, those & transmissions are black magic, works of the devil to me & I just cant get my head around them for some reason & the more I look on the web the more confused I get.
My son's Dodge Lil Red Express has a 9 1/4" rear end (12 bolt) 56" back plate to back plate.
It's supposed to be a sure grip (LSD) diff, but only spins up one wheel up. I thought if it was a friction plate type diff it could be knackered, so on Dave Billadeau's advice jacked it up & spun a wheel.
Result wheels spun opposite, so it's had an open diff fitted at some time
Can anyone point us in the right direction as to what diff would be best to replace the open unit fitted or where to source one.
We don't really want to go a different type route (I've got a spare full width Ford 9" with LSD & Strange shafts). He wants to keep it stockish.
As I said I don't know the difference between Sure grip, Power lock, should we just get the diff welded (locker?) etc. & I don't really want to pester Dave again (I'm always picking his brains).