Shaft Length

Just checked and cleaned an 8 3/4 that had 1969 barracuda written on the housing. Never apart or modified. 3.23 gears and a sure grip and a 489 carrier. Small bolt pattern. Both axles are 27 3/4'' long from the outer flange face to the end of the axle. NOTE:::: they are 31 spline axles !!!! I washed the axle bearings in a round plastic container with gasoline covering the bearings, washed and rinsed several times, and blew off with air. Nice and smooth. I never use gasoline in the garage, always outside. No exceptions. New inner axle seals. Gambling on the outers.

Some of the aftermarket axles and aftermarket differentials have 30 splines.

Did a little checking on the green bearings a while ago. I think there are two different kits. One required cutting the axle, one didn't. More investigating is needed.