Best Upper a arms for 72 a body

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7duce swinger

7duce swinger

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Hey everyone, i am curently swapping my front suspension to the dr diff kit, and as like always i noticed my front suspension was shot for a 40 plus year old car. Weird right.. Anyways, where can i find stock replacement upper a arms. Whats the best priced price a arms? I dont care if they're stamped steel or tubular. As long as they're decent priced and whatever works.

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dr diff has 73 and up style for 198.00 comes with ball joint and bushings already installed.
 
I really like what I've seen of the QA1 stuff, everyone I have asked about it seems to like their stuff. They may be rebranded parts from another manufacturer and cheaper, like their adjustable shocks are rebranded items from flaming river. You can get the flaming river ones at Summit right next to the QA1's for less money.
 
im sorry i just noticed you have kelsey brakes. i thought they were converted 73 and up brakes when i first looked at the pic. youll probably need to just rebuild the ones you have. i think all aftermarket stuff is based on 73 and up. i havnt researched 67-72 aftermarket stuff. someone else will have to answer your UCA question.

it appears qa1 has some tubular ones for a 72
 
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el5dart said:
im sorry i just noticed you have kelsey brakes. i thought they were converted 73 and up brakes when i first looked at the pic. youll probably need to just rebuild the ones you have. i think all aftermarket stuff is based on 73 and up. i havnt researched 67-72 aftermarket stuff. someone else will have to answer your UCA question.

it appears qa1 has some tubular ones for a 72
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So im using Dr. Diffs 11.75"( stage 2) kit. But is the dr diff kit using the big balljoint setup or small. Im assuning pre 73 is small?.
 
What i meant was when ordering it prompts you for what year you're ordering for off of dr diffs website.
 
The 11.75’s use a 73+ spindle, so they’re large ball joint and you’ll need large ball joint UCA’s. Or adaptors, but if you need UCA’s anyway just get the large ball joint variety.

QA1’s tubular UCA’s are really nice, and you’ll be able to get more caster than with a set of reproduction stamped UCA’s.
 
The QA1 arms are nice, I have them on
My Dart. Great for getting a better alignment with more caster built in. They are available in small or large ball joint.
 
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72bluNblu said:
The 11.75’s use a 73+ spindle, so they’re large ball joint and you’ll need large ball joint UCA’s. Or adaptors, but if you need UCA’s anyway just get the large ball joint variety.

QA1’s tubular UCA’s are really nice, and you’ll be able to get more caster than with a set of reproduction stamped UCA’s.
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Would you happen to know what part number works with the dr diff 11.75" kit. I see summit but doesnt say which are big and small balljoint.
 
I used the POL disk brake kit from performanceonline.com with their upper control arms, haven’t aligned it yet. Only driving around the neighborhood. Went together nice. Only complaint so far is the ball joint dust cover doesn’t sit right in the carrier. It’s off by a small fraction. I’m going to take them off and hit it with my cartridge roll and make them fit right to keep the dust and moisture off the ball joint.
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Garrett Ellison said:
I really like what I've seen of the QA1 stuff, everyone I have asked about it seems to like their stuff. They may be rebranded parts from another manufacturer and cheaper, like their adjustable shocks are rebranded items from flaming river. You can get the flaming river ones at Summit right next to the QA1's for less money.
Click to expand...
QA1 makes all their parts in house. These arms were not the old crap CAP arms. For tubulars, they are the nicest on the market. However, I will be testing a prototype arm this spring that will top them all.
 
7duce swinger said:
So the qa1 #52301 would in fact work with that specific dr diff kit. I just want to make sure before i buy some and have to return them lol.
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It should. That’s the part # for the 73-76 QA1 UCA’s, which are large ball joint UCA’s. And the 11.75” brake kit uses 73+ spindles, which take large ball joint arms. Beyond that all you could do is call QA1 to confirm they’re the large ball joint arms, but that’s what the website says. Or call Cass (DoctorDiff), but that’s a stock Mopar parts brake kit so the spindles have to be 73+.
 
72bluNblu said:
It should. That’s the part # for the 73-76 QA1 UCA’s, which are large ball joint UCA’s. And the 11.75” brake kit uses 73+ spindles, which take large ball joint arms. Beyond that all you could do is call QA1 to confirm they’re the large ball joint arms, but that’s what the website says. Or call Cass (DoctorDiff), but that’s a stock Mopar parts brake kit so the spindles have to be 73+.
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Roger, sounds good, ive emailed dr. Diff but no response. I just want to make sure it all works and that, that soecific brake kit is the 73 and up spindles. The summit site says large balljoints for the 52301 part number.
 
i called him 4pm moutain time friday , no answer. site said hes open till 6pm m-f so i emailed him friday and no response to my message yet either. maybe he needed a couple days off.
 
just got a message from him on getting stock in on some rear brakes. so it only took him two days to reply to my message. so not bad. naturally what i need is out of stock.
 
7duce swinger said:
Roger, sounds good, ive emailed dr. Diff but no response. I just want to make sure it all works and that, that soecific brake kit is the 73 and up spindles. The summit site says large balljoints for the 52301 part number.
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The 11.75” disk brakes are stock Mopar parts from the later B/R body cars. I run a set on my Challenger that I sourced from donor cars. While I haven’t purchased the kit from DoctorDiff, those rotors only work with the large ball joint spindles.
 
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