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Originally Posted by BBC71Nova
First post I think but long time lurker :-).
Anyone think it would be possible to convince Eaton to build a 35spline trutrac? There is always a lot of interest in a stronger 9" unit. I think all they have is 31spline. It would be nice to have a 35spline unit so it would be feasible to have 2 centers that could be swapped out without having to swap axles too. You could have 1 trutrac and 1 spool both 35 splines. Right now I'm leaning towards 12 bolt with 33 spline trutrac but I'm afraid it just won't last if I go to the track.
John
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The 33 spline 9" axles will probably be fine... if you buy
good axles. (Mark Williams-- Period. The 300M axles are really tough.)
And I would not do a 33 spline 12-bolt... The axle diameter is getting to be so large the carrier diameter under the carrier bearings starts to get thin and you now have a new failure point.