46RH overdrive ratio.

Headintheclouds said
Just checking figures for 46RH overdrive. 2400 RPM steady level driving.

3rd ?

Headintheclouds said
Switch in overdrive - 1850 RPM. This comes out at about 0.77:1 but the overdrive ratio is given as 0.69:1.

od no lockup? gear ratio is actually still .69 with 200 rpms of slippage

Headintheclouds said
Switch in lockup and RPM drops to 1650. 2400 to 1650 is a ratio of 0.68:1.

od and lockup? no slippage

Headintheclouds said
Does the stated ratio include the change due to lockup or is this transmission slipping? What is the ratio due purely to the sun and planet gears in the overdrive?

So ultimately there's only a 0.01 gear ratio discrepancy, which is probably the tire size your using not slippage.

Edit* I just realize your not probably using the tires size and gears to figure out od ratio.
see below