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I was told that there is 2 dana 60's.One is a light duty one and the other a heavy duty one.Is there any truth to this?what would the heavy duty one have that the light duty one does't?if it is so.
Not sure if you're referring to the front and rear or what here. I know on mine the front is a D60R; the reverse rotation, high pinion version. Not sure otherwise.
Do you know if they were talking about it and a D61. The D61 I "believe" was used in lighter duty trucks and had a more limited gear ratio. Not sure about the ratios for it.
Ahhh, wait a sec. Ford just went to a Super 60 for the SD's that have a 4.30 ratio or better. Let me look for some numbers on that one. Not sure of the tech specs, but here's a link to them.
I know on mine the front is a D60R; the reverse rotation, high pinion
I'm not hounding on you but I want to point this out because a lot of people say it. These axles are NOT a reverse ROTATION. It's a reverse cut gear. Due to the position of the pinion in relation to the ring gear (high on the ring rather than centered) the teeth are cut differently to make them stronger. The pinion still turns the same direction. You'll see this misprinted in magazine articles and all over the place. There's my bit of useless info for the day.
If he's talking rear axles there's the 30 spline D60 and then the 35 spline D60 but I think it was rare that Ford used the 35 spline version. They're used mostly by Dodge and if I remember right the axle tube on them is a little larger than the regular 30 spline D60 axle.
Im talking about front axles, dana 60 front axles.I was told that there is two of them.i have an 88 dana 60 with the king pins high pinion but i was told i have the light duty one i dont know about that though.I do know that it came off an 88 f 350 .hmm
Last edited by FordPickMeUp; Sep 22, 2005 at 04:37 PM.
It means it's stronger in terms of the teeth on the gear. Riding on the coast side is like driving in reverse everywhere you go. The gears can't handle as much force in that direction, it's running on the back side of the tooth basically.
I wonder if you're refering to the fact that the 85.5 and up to 92ish ford used kingpins in the dana 60, then after that they used balljoints.
But back in 77-78 (used for about 6months) there was an open knuckle, low pinion, 30spl inner and 19 outer spline dana 60 turd used, there were also cloased knuckle versions with the same axles used pior to that.
As far as the rear, ford used a 35 spline semi float dana 60 (i've got 2 of them) in 80-81 (might've used them up through 82 as well) as well.
Like Ivan said, you're running on the back side of the tooth. All gear mesh patterns (search for this) are set up on the drive side to ensure maximum strength and durability. Gear lash, seat depth and pinion tooth contact pattern are established during setup to provide for optimum performance of the system as a whole - this is critical. But all such setup is performed on the front "drive side" of the gear teeth. Quality gears are cut helically and provide much better contact availability on the drive side, while the coast side is rounded, to prevent binding. The coast side allows much more "slip", which means popping out of gear. Hope this helps.