What type of hub?

That is Budd Stud pilot hub. Most cast iron ones had the hub center wheel hole guide fingers cast into them. You cannot change studs to the newer ones. The Budd studs are much bigger diameter with 3/4” bolt in threads. 1” threads for the nuts. Some studs are press in and some are bolt in like this. These are pre July of 1980. So no steer brakes required.

 

Small package is correct, that is the old style budd . You can find these easily at most truck parts . Got to remember that left side has left hand threads and the right side has right hand threads , lefty - loosely don’t apply to old style budds. They make 3 different types of inner nuts or thembles for the duals - steel to steel , steel to aluminum and aluminum to aluminum, be sure to use the correct one , because it’s very very important!!! Once you determine which one you need buy some extra to have on hand ( left and right , inner and outer) . Do not over torque,this causes the chamfer on the outer nut to squeeze down and contact with the inner threads and will distort them. This will cause the outer nut to go back on hard , check both nuts when you pull them for the distortion of threads. If any distortion is found reject the item , trust me , this will save headaches on down the road. It may not be the way that is recommended by some but , this is the way I do mine , inspect the studs for distortion . next put thin Coat of copper anti- seize ( I don’t think the aluminum works as well) on threads. After installing tire and inner nuts ,torque to 450-500 ft lbs using the recommended sequence chart. Then a thin coat on inner nuts and repeat tighten procedures. Don’t forget get to line up outside tire to access valve core on inside tire. Always keep left on the left side and right on the right side of truck . I hope the pic is of the right hand steer , to change to hub pilot you must change the hub.

 

sounds like he just needs a new stud pilot wheel then.

So what is the actual difference between a hub pilot and stud pilot hub if the stud pilot hub has the 4 tangs for the wheel center bore just like a hub pilot. Is there a machined surface the wheel bore centers on that the stud pilot hub doesn't have? Been awhile since I looked at one and cant picture it.

 

They have the tangs to help line up the studs and holes, so the holes arn’t dragging across the threads and damaging wheel. Rockwell 8 bolt rear axle hubs from 60 plus years ago had tangs to support the center holes. Just not as a tight fit that requires a big hammer or dynamite to get them loose like the new style.
If installed correctly Budds never got loose unlike all the wheel off’s we see today.

 

This is one example of the hub having a lip all the way around the hole. It sits 3/8” inside the lip of thhe center bore. It is a hub on a Shuller Axle on my ‘51 Diamond T It is hub and stud pilot

 

This is one from my ‘49 AutoCar. A-car built there own acles and hubs back then and cast these to be an extra step to get up on the fenders to get under the butterfly hoods.

it’s hub and stud pilot as well.

 

Good luck getting a hub piloted rim on those stud piloted studs.

 

The center bore and bolt circle on the “Budd” stud pilot and the “Accuride” aka originally Motorwheel hub pilot wheels are the same. There are wheel dealers that will drill and angle cut the seats on the Motorwheel style to be used on the Budd style. Brake drums are all the same across both styles. That is why most universal drums are still drilled with the big 1” holes.

 

Yes. That’s why I said he just needs a new *stud* piloted wheel. (Not a hub piloted one). I would assume you can still find one new or used somewhere.