Ok guys, I got the bare chassis with motor and tranny in the shop. I now plan on painting the whole thing, and making my own disc brake setup. Here are my questions
1. What rotors fit the front axle?
2. Once I find ones that fit, will they have to press on, or is there a way to make them slide on, like a car?
3. If I remove backing plate, would the bracket that I make bolt to where the backing plate did be strong enough to hold a caliper if it is 1/4" thick?
4. What caliper would work best?
Since no one else has done it, I want to do it myself, just need some Q's answered. Thanks in advance
HighDesertDodge wrote:I received my brackets from AAJ Brakes today. Here is the parts list that received with them.
Rotors: 82 Chev 3/4 ton PU 2wd.
Calipers: 71-76 Impala #4035 & #4046
Bearings: Stock Dodge; Inner #501349 Outer #15101
Seals: #22826
How much were the brackets?
$258 with shipping.
Well on my way to becoming that eccentric old man in every town.(crazy as a s#@thouse rat) With a yard full of desireable old vehicles that tells you, Sorry they're not for sale..... Someday I'm going to fix them.
HighDesertDodge wrote:I received my brackets from AAJ Brakes today. Here is the parts list that received with them.
Rotors: 82 Chev 3/4 ton PU 2wd.
Calipers: 71-76 Impala #4035 & #4046
Bearings: Stock Dodge; Inner #501349 Outer #15101
Seals: #22826
Thats too much $ for brackets, I think I can make um a heck of a lot cheaper. That rotor, and calipers will fit inside though, huh? Cool, thanks for the list. If you dont mind, could you post some pics when you get the time? I got the one side all dissasembled, ready to start making stuff. That would be great, thanks,
HighDesertDodge wrote:I received my brackets from AAJ Brakes today. Here is the parts list that received with them.
Rotors: 82 Chev 3/4 ton PU 2wd.
Calipers: 71-76 Impala #4035 & #4046
Bearings: Stock Dodge; Inner #501349 Outer #15101
Seals: #22826
Thats too much $ for brackets, I think I can make um a heck of a lot cheaper. That rotor, and calipers will fit inside though, huh? Cool, thanks for the list. If you dont mind, could you post some pics when you get the time? I got the one side all dissasembled, ready to start making stuff. That would be great, thanks,
Steve
These are the pics of Big-G's from the other 3/4 disc thread below. We bought our parts from the same company.
Well on my way to becoming that eccentric old man in every town.(crazy as a s#@thouse rat) With a yard full of desireable old vehicles that tells you, Sorry they're not for sale..... Someday I'm going to fix them.
Thanks for the pics HDD, but my spindle backing plate holes are different, they must have changed it going from 4 eyes to pie plate years, so those brackets wouldnt even work. But those rotors fit on the spindle with the original bearings from the spindle, or are they different stock bearings? Thanks,
K guys, Im bumping this one back up. Now my question is, are the front spindles on a 3/4 ton the same for all years? I really need to know because I want to start this soon. I NEED to know if this stuff fits on a '67 spindle. Also, do they make brakets for bolt holes like mine and fosh's on this thread?
looks like the bearings are the same only if you had the 12"x 3" drums... the 12"x 2.5" drum spindle (like mine) measures 0.843" on the outer bearing landing. I believe the inner is the same on both drum sizes. It's a real bummer. I have the spindle that accepts the tallzag bracket, but the hub/rotor hit the bracket if it's installed where the drum backing plate goes. I see the AAJ kit is made for a completely different style axle (3/4 ton) and mounts on the inside of the spindle. Perhaps the 1/2 ton AAJ kit will work on mine, but then the dilemma is rotor diameter... this is a pickle
fosh69 wrote:looks like the bearings are the same only if you had the 12"x 3" drums... the 12"x 2.5" drum spindle (like mine) measures 0.843" on the outer bearing landing. I believe the inner is the same on both drum sizes. It's a real bummer. I have the spindle that accepts the tallzag bracket, but the hub/rotor hit the bracket if it's installed where the drum backing plate goes. I see the AAJ kit is made for a completely different style axle (3/4 ton) and mounts on the inside of the spindle. Perhaps the 1/2 ton AAJ kit will work on mine, but then the dilemma is rotor diameter... this is a pickle
Crap. So fosh, youre telling me that the inner bearing # will work, but the outer doesnt? Theres gotta be a bearing that will work. I have to make this work, one of my drums is bent. I need help!
I'm not sure which size spindle you have... if you have the bigger drums, you should have the spindle that will accept the chevy rotor without any problems, but I'm just going by the bearing size research and my two main sources right now are napaonline.com and partsamerica.com
I do know that you can get replacement drums through the napa site if need be... I might have to do that until I figure something out. Good luck, dude.
fosh, I measured the width of the outside of my drum, and its about 2.5 inches. So youre telling me that the outer bearing is different. My backing plate and spindle looks just like yours in the pic you posted. I believe you and I are in the same boat. There has to be a bearing that will fit.
Couldnt a person take the specs of the outer diameter of the race on the outer side of the rotor, and take the spindle width, and do a spec search? I know that down at the local John Deere dealership they can so spec searches to find any bearing and race you want. Maybe this is what needs to be done?
That's kinda what I've been trying to do on my own (on line) but it's just frustrating. If you can do a spec search, the O.D. of the '82 3/4 ton 2wd Chevy rotor is 2.8910" and the outer spindle on my (our) truck is 0.843". So you would need a bearing cup and cone with these dimensions.
BUT... that is only half the problem... the other problem is the caliper bracket. The one I ordered from tallzag will only work for an 11.5" rotor. I'm sure it can be extended an inch to work on a 12.5 in rotor, but that interferes with the integrity of the bracket. I've also looked around, and there's no eight lug rotor less than 12.5". In fact, some later model ford econoline's have rotors over 13"!
This is what prompted me to investigate 5 lug rotors that would work on my spindle with tallzag's bracket... though I am still very set on keeping my beloved eight lugs... UGH!
fosh69 wrote:That's kinda what I've been trying to do on my own (on line) but it's just frustrating. If you can do a spec search, the O.D. of the '82 3/4 ton 2wd cheby rotor is 2.8910" and the outer spindle on my (our) truck is 0.843". So you would need a bearing cup and cone with these dimensions.
BUT... that is only half the problem... the other problem is the caliper bracket. The one I ordered from tallzag will only work for an 11.5" rotor. I'm sure it can be extended an inch to work on a 12.5 in rotor, but that interferes with the integrity of the bracket. I've also looked around, and there's no eight lug rotor less than 12.5". In fact, some later model ferd econoline's have rotors over 13"!
This is what prompted me to investigate 5 lug rotors that would work on my spindle with tallzag's bracket... though I am still very set on keeping my beloved eight lugs... UGH!
Fosh, Im going head first on this one. I picked up the impala calipers yesterday, and ordered the rotors. The rotors are in now, I just have to pick them up. Then its off to the JD dealer to do spec searches and measurements.
The brackets Im going to make myself, Im going to have to. My cousin has a plasma, so cutting precision isnt a problem there.
Once I get all of this info, I will post bearing and race #'s, and maybe, just maybe put up a pattern for the bracket. I dont want to all that much for the sake of me being the first one to do our type of spindle
These are the measurements I got from the front spindle. They are the size that the inner and outer bearing cone needs to be.
Here are the meausrements I got from the new '82 chevy 3/4 ton 2wd. These are the measurements I got after I pounded out the races.
What Im going to do now is order the correct bearing cones for the outside and inside, and the corresponding races. Then take the measurements from the outside of the new races and of the inside of the brake rotor, and take them to the local machine shop. I will have him make me a bushing that will press into the rotor, and then the race will press into the bushing. Does this sound like it will work?
Just my , but if your going to have anything machined, why not just have a sleeve made for the outside part of the spindle? that way if you can use the stock size bearing for the 12" x 3" drum on an eight lug chevy 2wd rotor. Than, if you ever have to change the rotor, you don't have to go through and have the bushings changed out and such?
I can't remember who was doing this sort of kit before, but I beleive that is what one conversion does in order to make a dakota hub/rotor fit on the 1/2 ton spindle.
fosh69 wrote:Just my , but if your going to have anything machined, why not just have a sleeve made for the outside part of the spindle? that way if you can use the stock size bearing for the 12" x 3" drum on an eight lug cheby 2wd rotor. Than, if you ever have to change the rotor, you don't have to go through and have the bushings changed out and such?
I can't remember who was doing this sort of kit before, but I beleive that is what one conversion does in order to make a dakota hub/rotor fit on the 1/2 ton spindle.
Good idea fosh. But the thing is, this isnt going to be my daily driver, and it will take many years for my rotors or bearings to wear out. And if they do, no big deal, I'll just pound out the bushings and pound them in the new ones. Maybe you have me convinced though.
Wait! I take it back about using the 2wd chevy rotor... my idea was to use the original hub, bearings and races, and fit a slide-over rotor like tallzags 1/2 ton kit does... then bearings won't be an issue at all... just slide the rotor on over the hub and mount the caliper. The 2003 dodge 2500 front rotors may work for this, and that's a 13.89" rotor! I'll try this one next
, but if your going to have anything machined, why not just have a sleeve made for the outside part of the spindle? that way if you can use the stock size bearing for the 12" x 3" drum on an eight lug chevy 2wd rotor. Than, if you ever have to change the rotor, you don't have to go through and have the bushings changed out and such? 
