I am in week 5 of a never ending series of dead end pursuits and need some help.

has anyone done this conversion? i have searched online everywhere and there is very little in the way of specific advice on my model and year.

following other forums on the matter, i purchased the correct el dorado brake calipers so i could have a fully functional e-brake. my problem is getting the disc rotor to mate properly to my hubs.

The chevy rotor i bought (from the advice of other forums) fits great with one key exception - the wheel stud holes on the rotor are 0.655" and my hub wheel stud holes are .605". what happens is that horizontally, the new rotor can move (rotate) ever so slightly when the studs are snug.

i have looked for studs that have a larger diameter upper shoulder than the knurl but none are that much bigger than the knurl. i am thinking the only way out of this is to get a different set of rotors. any idea what to buy?

 

I went back on some of your previous posts to get insight on why you want disks on the back. Looks like you're converting a 2wd into a 4wd...correct? If you're into it that deep, have you thought about finding a Dana 60 rear that already has disks? Have a good welder move the spring perches. I like my drum brakes but since you're going that far, I figure all options are on the table.

 

i abandoned the conversion idea a while back. i am keeping the 2wd. when i researched converting to disc on the back, all the online forums showed this to be a pretty simple fix. nobody in those forums mentioned the stud hole match issue. i don't think this is a huge problem but before i dove into the research (again!) i was hoping to find out that someone else had blazed this trail and solved this issue already for a 65, 66, 67 model year 2wd F250.

 

In your search did you find the thread on this site in which the member was using Dodge parts, maybe the whole Dodge D60 housing? I don't know if it was completed but it did get to the rotors fitment stage.

 

no i did not see that post. can you send me a link to it?

 

I don't have it. Look back about 10-12 years.

 

I don't know if you have seen this or if it has any useful information for you. NORTH COUNTRY SPECIALTIES ®
, Doug

 

For the OP, it kind of made sense when I thought you might be converting to 4wd to also convert to disks...especially if you planned on submerging your axles in water. Since you're staying with 2wd, I wonder what you hope to gain after all this work of converting to disks? Rear drums in proper condition are strong on these trucks. As example, I had a panic stop situation on the interstate with my 5 ton fifth wheel hitched. I was able to lock up my back tires on dry concrete and that's with manual...i.e. no power assist. My fifth wheel adds over 1800 lbs to the rear axle.

I don't mean to poo-poo your plans because I'm all for creativity. I'm just curious what your plans are considering the effort you'll be putting into the conversion.

 

1966f250 let me add that the (Dodge rear) thread I referred to might have appeared in the 61-79 forum, as it then was, so you might want to expand your search accordingly.
Eric