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but look at ford 9" and GM 12/14 bolt rears. they all use a flat roller bearing, IIRC, which doesn't carry thrust loads any better than a ball bearing....





This is an apples and oranges comparision because a FLAT ROLLER carries ZERO LOAD , the thrust load is carried by the end of the axle by a C clip and we all know what happens when the C clip lets go.





umm, err, how many ford 9" rear are C-clip axles?



I should have said a flat roller carries no side load. No c clips in the 9", yes , but do they use a flat roller or a ball bearing ?

Forget I said anything , someone wants to run greenies in auto cross , knock yourself out. I've got enough NOS tapered sets, with retainers, to last me 2 lifetimes in 4 cars .