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Here's what I think:
The Dana 60 is from a '99.5 - '04 Super Duty, which has a different lug pattern than the OBS.
Notice the adapters, the 10 lug pattern is smaller than the 8 holes that bolt it to the axle.
The OP used '99 - '04 Super Duty F-550 dually adapters (and Dana 60 axle) because they use a larger pattern 8 lug mount (220 mm?). I have a set here from a E-550 I am hanging onto for some reason, so that's what it looks like to me.
Then he had the 10 lug adapters made to fit the '99.5 - '04 550 dually adapters.
Just my opinion from the looks of the above pic.
Edit: Then again, there's no way those adapters would fit behind the F-450 wheel, so I'm back to scratching my head again...
Here's what I think:
The Dana 60 is from a '99.5 - '04 Super Duty, which has a different lug pattern than the OBS.
Notice the adapters, the 10 lug pattern is smaller than the 8 holes that bolt it to the axle.
The OP used '99 - '04 Super Duty F-550 dually adapters (and Dana 60 axle) because they use a larger pattern 8 lug mount (220 mm?). I have a set here from a E-550 I am hanging onto for some reason, so that's what it looks like to me.
Then he had the 10 lug adapters made to fit the '99.5 - '04 550 dually adapters.
Just my opinion from the looks of the above pic.
Edit: Then again, there's no way those adapters would fit behind the F-450 wheel, so I'm back to scratching my head again...
In the photo, the OUTSIDE bolt pattern around the edge is how you bolt the Front plate, with the 10 lug pattern, to the Back plate, with the 8 lug pattern, together.
I know this because I have a set of these adapters in my basement lol
I am really confused now.
The 10 lugs on the adapter are smaller than the 8 holes.
The 8 holes bolt in place on the oem hub.
So the 8 holes/lugs must be waaaay larger ring than 8x6.5??
I am really confused now.
The 10 lugs on the adapter are smaller than the 8 holes.
The 8 holes bolt in place on the oem hub.
So the 8 holes/lugs must be waaaay larger ring than 8x6.5??
Look at the RING/PLATE below the Top Ring/Plate
Those two rings/Plates get bolted together.
The BOTTOM plate has the 8x6.5 bolt pattern in it, with some of the bolt holes covered up. The holes are large so you can run a lug nut onto the studs with a socket.
The holes that run along the outside of the rings/plates are just for securing both plates together as ONE adapter then.
Look at the RING/PLATE below the Top Ring/Plate.
Those two rings/Plates get bolted together.
The BOTTOM plate has the 8x6.5 bolt pattern in it, with some of the bolt holes covered up. The holes are large so you can run a lug nut onto the studs with a socket.
The holes that run along the outside of the rings/plates are just for securing both plates together as ONE adapter then.
Well dam, I had no idea thats what it was.
What a dumb way to do it.