Please help verify/identify this third member.

[33 IMP]

New 741 gears are much harder to find than 742 gears, and much fewer ratios and manufacturers.
741 has a much undeserved reputation as the weakest.
Most aftermarket gears are for 742/489 cases.

 

[R413]

Here is a photo of the pinions and bearings. Look at the size dofference on both bearings. 741 and 489 use same pinion seal, 742 seal has a larger outer diameter because the bearing race is so much larger.
741 top
742 bottom

 

[old guys rule]

In my experience the 741 is getting harder and harder to find gears for
For example my recent attempt to rebuild my 741 with a 3.91 gear
We were unable to find a 3.91 gear to fit the 741 case
It is available for the 742 & 489 case
We ended up going with a 489 case so that I could stay with the 3.91 gear

Harder to find gears or the ratio you want? Will 1/10 spline from a 742 fit at 7:41?

 

[33 IMP]

Harder to find gears or the ratio you want? Will 1/10 spline from a 742 fit at 7:41?

Both. The ten spline yoke should fit either.

 

[old guys rule]

Both. The ten spline yoke should fit either.

Thanks, Dave