4x4 Dually Rotor to bub bolts

[ahale2772]

ssoooo....

finally have started to throw dually hubs on my truck (up front), looks like I can reuse my old rotors (allready 1ton rotors), they have about 1.5 inches of rotor thickness (parts store guy says the most popular rotors are 2 inches thick)... yet the distance from the rotor to the inner bearing race is the same, so im reusing my old rotors.

anyways... long story short, hub needs 8 14mm bolts (best fitting bolt I could find), that go thru the rotor 5/8 hole (about 17.8 mm)...

so I need 16 bolts, that are 14mm coarse thread, with a 5/8 shank, only about 1inch long....


anyone have these bolts? or know where I can get some? Dodge told me to pound sand, napa has no clue...

[m880cummins]

Do you have the selectro hubs?

I didn't know the duallys used selectros....ever. Maybe drill and tap to 3/8" coarse?

Charlie

[ahale2772]

not talking about the locking hubs, talking about the bolts that bolt the brake rotor to the actual hub, the big ugly spinny thing with bearing in it lol

[ahale2772]

pirate 4x4 FTW, guess the bolts dont have any shank on them? just a lock washer? can anyone conform that? 9/16 is a weird size...

[dazedandconfused]

I have my 2 wd ones at home i can check how they are done when i get home.

[ahale2772]

kewl, thanks

[dazedandconfused]

I do know on the 2wd 350 rotors the stud hole is smaller. Im going to bet its the same on the 4x4 because i would have to dtill the holes out to make the 250 studs fit. Mine have 1/2" x13 npt bolts 1&1/2" long with a lock washer.

[dazedandconfused]

[ahale2772]

thanks Andy...

so the 2wd hubs have 1/2 bolts... interesting, tried a 9/16 bolt in my 4x4 hubs and they fit perfect, still weary about the fact that its a 9/16 bolt in a hole that is about 18mm... almost 13/16 with no shank.

anyways, guess ill just use lock washers and call it good, thanks

[dazedandconfused]

I bet the rotors are different if the bolt is loose in the hole. I know the 2wd id different then a 250 rotor.

[ahale2772]

Well i havnt found any listings for a 4x4 dualy that have anything other than 5/8 holes, i duno

[Mark Nixon]

You might have better luck using a Chevrolet application to source the bolts new.
Go with a 1985 1 ton Dually app.
They ARE 9/16s Standard thread, BTW.

Mark.

[ahale2772]

so the biggest thing im confused about is.... what rotors should I buy for this application? Napa says there is two options, either a rotor that is 1.5 inch thich (same thickness as the 1ton rotors on there now) or a 2 inch thick rotor.... Napa guy says the 2 inch thick rotor is the popular option.

next.... will a dually rotor have 9/16 holes where it is bolted to the hub? or still have the big 17.8 ish mm holes?

im lost on what I should do...

essentially im converting a srw 1ton front end to a drw 1ton front end... Mark, I allready bought these hubs from you, IDK what year truck they are from, and what calipers, rotors, and caliper brackets they would use..

[welderboy250]

DRW rotors have smaller bolt holes than SRW rotors. Iirc they are however both the same thickness. If this continues to be a problem Pm me and I may be able to come up with a Bendix number for you.

[little doug]

so the biggest thing im confused about is.... what rotors should I buy for this application? Napa says there is two options, either a rotor that is 1.5 inch thich (same thickness as the 1ton rotors on there now) or a 2 inch thick rotor.... Napa guy says the 2 inch thick rotor is the popular option.

next.... will a dually rotor have 9/16 holes where it is bolted to the hub? or still have the big 17.8 ish mm holes?

im lost on what I should do...

essentially im converting a srw 1ton front end to a drw 1ton front end... Mark, I allready bought these hubs from you, IDK what year truck they are from, and what calipers, rotors, and caliper brackets they would use..

I think the Napa guy is a little confused. Both the chevy dana 60 front and the 90-93 dodge dana 60 front use the same exact hub and 1.5" thick rotor.The 76-89 dodge uses a different hub and a 1.25" thick rotor.You can use your calipers,brackets,ect from your srw truck.They are the same as on a DRW truck.