i know the hub, bolt pattern are same, are the dana axle and the 9" axles interchangeable?? length, bearing size/location, spline count? i have a noisy bearing in my 61 9" and two good dana axles sitting around. thanks, dick r.

 

I'd be amazed if they were compatible, and 9"-ers have different bearings, some tapered, some not. Bearings themselves are cheap, installation on a 9" with the retaining sleeve is a pain.

 

Absolutely not, 2 different animals...not one rear axle part interchanges.

1961 F100's use the large 9" axle bearing (there are 3 others, medium, an axle bearing/seal combo introduced in 1974 and the type used with the 9 3/8" ring gear).

The large bearing will be found in all 1961/65 T-Bird's & full sized Ford/Merc station wagons. All 1961/67 F100's, 1966/73 Bronco's.

Some 1974/86's have the large bearing, some have the axle bearing/seal combo. Some 1968/73 have a 9 3/8" ring gear, some do not.

Axle bearings have BIN's (Bearing ID Numbers) stamped on them, autoparts stores/bearing shops go by these numbers.

 

thanks, that's pretty clear. that's what i like, a definitive answer. guess i'll pull the axle and turn it over to napa. thanks, dick r.