ujointclothing said:
Both setups are 8 on 6.5 bolt pattern, so they should be interchangable. I'm talking about the dually adapter, not the actual hub assy.(what holds the bearings) Pull one of your dually adapters off the GM and check the fit on the ford axle.
They're both 8 x 6.5 but the hole in the middle of the GM wheel would not fit in the Ford's dually adapter hub. A Ford wheel will mate to the GM lugs and hub, but loose. GM and Ford wheels are both "hub-centric" wheels; i.e. the wheel is held/centered by the hub, not by the lug bolts.
I also found the following info on Ford vs GM Dana 60's/hubs, and I wonder how the differences will affect my install, especially #2 and #3:
Differences between the Chevy/Dodge D60 and Ford D60 are more numerous and apparent. They include
1) Chevy/Dodge use a 6 bolt spindle mount pattern, Ford is 5 bolt
2) The Chevy/Dodge spindle and bearing/wheel hub are 5/8" longer than the Ford.
3) The Chevy/Dodge stub shaft is 0.600" longer than the Ford stub shaft
4) Chevy rotors are about 1.5" thick, the Ford and Dodge rotors are about 1.25" thick
5) Virtually all Ford front disc brakes used 2 piston calipers
6) The Chevy/Dodge outer knuckle is clearanced for their large single-piston calipers, the Ford are not.
7) The Chevy/Dodge caliper mounting bracket bolts on AFTER the spindle, as in knuckle-->spindle-->caliper bracket, whereas the Ford mounts the caliper bracket between the knuckle and spindle, as in knuckle-->caliper bracket-->spindle
8) The Chevy/Dodge are passenger drop regular cut low pinion diffs, the Ford are drivers drop reverse cut high pinion.
9) Chevy/Dodge uses six 1/2" spindle studs, Ford uses five 7/16" spindle studs
10) Ford knuckles seem to have more issues with the upper kingpin area strength than others. Chevy/Dodge knuckle has thicker ribbing around the upper kingpin area.
11) Ford knuckles have a shorter steering arm than the Chevy/Dodge. A 1.5" diameter tie-rod on a stock Ford D60 will justtouch the diff cover at full lock. The same tie-rod on a GM Dana 60 would be just over 1/2" away from the cover at full lock.