Conversation Between cuellar23 and CropDusterMan

I will for sure, thanks!

Feel free to ask q's.
Jason

By Spline count, I am referring to the differential yoke-the part that comes out of the front of the differential that hooks up to your drive shaft. The original Dana 60 (that I had-4:56) was a ten toothed spline on the diff. yoke, the 1972 I swapped in had a 29 spline diff. yoke. There should be a tag on the diff with the gearing ratio...usually bolted under one of the inspection cover bolts.

I'm not sure of the spline count yet, waiting to get a day off to open up the diff cover and peak inside. The owner had 3.54s installed back in 1986 and recently replaced it with a 3.73 rear end to tow his boat. Said the 3.54s weren't cutting it hauling a a full size boat up mt. Hood. Hope you don't mind if I bounce a few questions off you as I get ready to do this swap(:

Well, if it's a swap out of a 1966, it should likely all bolt up perfect-not sure about the diff yoke though...my posts were discussing a 1972 Dana 60 into a '66 F250. In the later 60's/early 70's, Ford changed the drums-made them slightly wider and beefed up the rear end a bit. Ultimately, rebuild the drums and drum hardware before getting it onto the truck-I replaced the lines too...other than that, not sure what your Dana 60 looks like-it may have the same diff yoke as the old one...?...or maybe it's a different spline count?

Hey there! I'm about to do the same swap into my '66 F250 with a rear end out of a donor '66. Is there any thing l should lookout for? Was it a pretty easy swap?