My first post, so pardon any newbeisms. I'm curious, what are the differences if any between the 1965 f250 dana 60 the 1966 f250 dana 60?

 

Heck, there are differences between my 1966 F250 2wd Dana 60 and 1966 F250 4wd Dana 60, so whatchu talkin' about? Seriously, you need to qualify your question a bit better. Too vague as it is.


In many cases, at least, the brakes are different among other things. Some 1966 Dana 60's had 12" x 2.5" brakes while all 1965 would be 12-1/8" x 2" brakes, I believe. This makes a difference in the drums. My 2wd has integral drum and hub while the 4wd is separate drum and hub.


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I get your point. I'm asking about 2 wheel drive only and am interested in the mounting flanges for the brake backing plates.

 

All 1953/65 F250's have 12 1/8" x 2" front/rear brakes, as do some 1966/72's.

12" x 2 1/2" brakes introduced in 1966 F250's, standard equipment in 1966/72 F250 Camper Specials and with 7,500 lbs. GVWR

1968/72 F250 2WD's with optional dual piston caliper disc brakes have 12" x 2 1/2" rear brakes.
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Two different Ring & Pinions, as their pinion gears have a different number of splines.

1956/65 and some 1966's have 10 splines. Some 1966's, all 1967/79's have 29 splines.

The companion flange that bolts to the pinion gear is also different, as some have 10 splines, some have 29.

 

Thank you for all that info. I think at this point I'll focus on upgrading to front disks and leave the rear as is.