[Alex Blair (RIP)]

Another questions...... of the 3 going on four tranny teardown the best gears found so far have some surface black marks.... telling me some rust has eaten into the case hardening of the cut gears... how critical is it???? what condition of gears did you have to play with???? it seems all tranny have some water build up inside evenif only from years of Winter/Summer condensation...

Bob..
Back in my youth I rebuilt a few of those old flat head Ford gear boxes and as long as the gears had teeth ,they went in..
Slap some new bearings,new hypoid 90 and seals and stick her back in the truck...
For the amount of miles that truck will be driven,it will still be running at the second coming...
I remember changing a crown and pinion that the teeth on the pinion were actually razor sharp..but I wouldn't suggest you file the transmission teeth sharp,but if you filed your own pointy,you would be a big hit at BBB#2...