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russcc · 05-03-2016, 06:42 PM

The value the pin could add to a spline fit is it would limit lateral movement back and forth during braking and acceleration which might wear the .0015 fit somewhat. That is jut and opinion from a one time machinist, that has no personal experience to back up the seat of the pants theory. I believe I put the pin in the spline in '40 rear end in the roadster, but not sure or concerned about it.

05-03-2016, 06:42 PM	#8
russcc Senior Member Join Date: May 2010 Posts: 2,871	Re: coupler pin (40) Ford The value the pin could add to a spline fit is it would limit lateral movement back and forth during braking and acceleration which might wear the .0015 fit somewhat. That is jut and opinion from a one time machinist, that has no personal experience to back up the seat of the pants theory. I believe I put the pin in the spline in '40 rear end in the roadster, but not sure or concerned about it.