(489) 3.23:1 to 3.55:1

1badfish67 said

Was the spline teeth count on yoke standard on OEM gear set for the 489? Haven't pulled mine to count.

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No. Very-early 489s had a 10-spline yoke, but within a year they went to the 29-spline. It's not common to find 10-spline factory 489 gears, but the aftermarket did make them too. I don't think I've seen an aftermarket 3.23 in 10-spline, though.