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Username Post: 1970 Impala Brake Questions        (Topic#364364)
profoundwill 
Newbie
Posts: 8

Reg: 02-04-21
02-17-21 07:15 AM - Post#2814445    

I have been using this forum to research this topic, but I want to make sure I have somethings clear. For starters I have a 1970 impala with factory disc brakes.

Looks like the 1969-1982 corvette front hub will be a direct replacement for my current? So these should work https://www.ebay.com/itm/1969-1982-Corvett e-Front-... ??

Looks like if I get those hubs all I will need is the corvette rotors to complete the job, correct.

Was also looking into some aftermarket brake kits with the 2" drop spindle. However, from my research here, it looks like with any 2" drop spindle brake kit I will need new upper control arms to be able to align my car again?

Sorry to bring up such an old topic, but I just want to make sure I have it right.

Thanks in advance for help.



 


mjc1 
Senior Member
Posts: 1718
mjc1
Loc: Burlington Ontario Canada
Reg: 09-15-04
02-17-21 03:20 PM - Post#2814474    
    In response to profoundwill

The C3 hub is not a direct replacement for the 69/70 passenger car front disc hub.

Are you missing the 69/70 Disc hubs?

1967 Grande Parisienne 4DR HT
My Flickr page



 
profoundwill 
Newbie
Posts: 8

Reg: 02-04-21
02-17-21 05:15 PM - Post#2814484    
    In response to mjc1

No, I have mine. I was just looking for an easier and cheaper way to change my rotors.



 
mjc1 
Senior Member
Posts: 1718
mjc1
Loc: Burlington Ontario Canada
Reg: 09-15-04
02-17-21 05:57 PM - Post#2814490    
    In response to profoundwill

You'll be happy to know new stock design rotors are readily available.
https://www.rockauto.com/en/moreinfo.php?pk=1617326&cc=104 8856&jsn=574&jsn= 574

1967 Grande Parisienne 4DR HT
My Flickr page



 
profoundwill 
Newbie
Posts: 8

Reg: 02-04-21
02-18-21 04:44 AM - Post#2814504    
    In response to mjc1

I saw those, but I don't have a easy way to remove mine from the hub, and if I damage my hub in the process I was looking for a backup plan. So I was looking for a hub that was already separated and just needed a rotor.



 
mjc1 
Senior Member
Posts: 1718
mjc1
Loc: Burlington Ontario Canada
Reg: 09-15-04
02-18-21 07:03 AM - Post#2814512    
    In response to profoundwill

I don't think the C3 rotors on C3 hubs will work with the 69/70 single piston caliper. The rotor likely will not center in the caliper. C3 rotors over 69/70 disc brake hubs will not work for the same reason.

It's not too hard to separate the hub from the rotor. To be honest, I forget how I did it, but I know they came apart with little trouble. Just don't beat on the hub, metal on metal, you'll distort it. Somebody here might chime in on how it's best done.

If any single piston backup plan, I'd go with 69/70 drum hubs with Dorman 610-259 studs and C3 rotors. Worked perfect without fuss for me two times and thus I'm a big proponent of it. Cheers and good luck with the project.

1967 Grande Parisienne 4DR HT
My Flickr page



 
BigDogSS 
"12th Year" Silver Supporting Member
Posts: 4896
BigDogSS
Loc: SoCal
Reg: 12-21-01
02-18-21 08:20 AM - Post#2814516    
    In response to mjc1

Actually, I think it might work, using the C3 hub and rotor on the 1969/70 Impala spindle with the single piston caliper. I mocked this up years ago, but never put it into practice. I remember the rotor being moved out a bit, but I don't think it matters with the single piston caliper, because it is a "floating" caliper --> it will center itself automatically.

    1967 Chevrolet Impala SS convertible 327 - Ermine White C1 - VCCA Senior Award
    1967 Chevrolet Impala SS Sport Coupe 396 - Marina Blue FF - personal "barn-find" lol



 
62BillT 
"19th Year" Silver Supporting Member
Posts: 5923
62BillT
Loc: Moneta, VA
Reg: 09-24-01
02-18-21 12:11 PM - Post#2814537    
    In response to BigDogSS

I had someone ask me for some '69-'70 Lug Nut Studs a short while back. I told the man that I would try, but I don't believe it's going to be easy. I took an old mag wheel lug with the closed top, screwed it on almost all the way down and gave it a whack with the hammer. To my surprise, I had a set of 10 in my hand about 5 minutes later.

Although I had no need to try, once the studs are out, the Rotor shouldn't be a problem.

I still some Hubs available. May have 2 sets.

Member:
-National Impala Association
-Vintage Chevrolet Club of America


 
jktucker92 
Silver Supporting Member
Posts: 455
jktucker92
Loc: West Richland, WA
Reg: 02-05-17
02-19-21 07:57 AM - Post#2814613    
    In response to 62BillT

Agreed that the studs come off pretty easily. A lug nut with a closed top is ideal, but a regular lug nut should work fine, just don't screw it on so far that the hammer hits the stud instead of the lug nut.
However, the discs can be pretty tight to the hub after 50+ years. One of mine came off pretty easily, but the other required heat to get it to break free. I do have a hydraulic press, so it wasn't hard.
By the way, I noticed on Ebay that new lug studs (Dorman PN 610-111) are available right now (link below). Not sure if this is old stock, or if Dorman started manufacturing them again. They are in the current Dorman Catalog, so I think they may be manufacturing them again. Two years ago, I spent 3 months looking for replacement studs before I found some NOS ones on Ebay.
For anybody replacing lug studs for any reason, you should re-torque them after driving for a short time because they can loosen up if you don't get them completely seated the first time.

https://www.ebay.com/itm/Wheel-Stud-Dorman -610-111...



 
62BillT 
"19th Year" Silver Supporting Member
Posts: 5923
62BillT
Loc: Moneta, VA
Reg: 09-24-01
02-19-21 08:43 AM - Post#2814617    
    In response to jktucker92

When I went to the Dorman site, I could not find them by application or part number.

https://www.dormanproducts.com/

Curious to where you saw them at?

But as you have mentioned maybe the E-bay seller has some new old stock??



Member:
-National Impala Association
-Vintage Chevrolet Club of America


 
jktucker92 
Silver Supporting Member
Posts: 455
jktucker92
Loc: West Richland, WA
Reg: 02-05-17
02-20-21 03:37 PM - Post#2814741    
    In response to 62BillT

I haven't been able to find it by searching by application. However, it's on page 207 in the Dorman 2006 Automotive hardware catalog. It's on a few other pages too, just search for 610-111 in their catalog.



 
profoundwill 
Newbie
Posts: 8

Reg: 02-04-21
02-28-21 03:10 AM - Post#2815249    
    In response to jktucker92

Thanks guys for all your help! However one question still remains.

If I go with an after market disc brake kit with the 2” drop spindles will I have to get new upper control arms in order to be able to achieve proper alignment.



 
wagonman100 
Site Ambassador
Posts: 15017

Loc: Baltimore, MD
Reg: 11-27-04
02-28-21 07:57 AM - Post#2815258    
    In response to profoundwill

You shouldn’t. Dropped spindles keep the same suspension geometry. They just raise the point where the wheel mounts on the knuckle to lower the car. You shouldn’t even have to get the car re-aligned since you didn’t touch anything where the control arms mount. I haven’t done the erase arch you have done, but I don’t know why it would say you need different control arms. The whole point of the dropped spindle is to keep the stock suspension geometry.

Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 
70BelAirHT 
Contributor
Posts: 632
70BelAirHT
Loc: Qc, next to Maine Border
Reg: 06-09-03
02-28-21 08:26 AM - Post#2815265    
    In response to jktucker92

I bought a complete set of front disc brake spindles completely rusted. Dissasemble them wasn't that hard and I am not really well euqiped to do the job.
Be confident, you'll be able to do that!

Mathieu Bélanger
Québec, Canada
1970 Bel Air HT 2 doors 350 Sport Coupe(frame off resto)
1970 Caprice HT 2 doors 454
2019 Dodge Grand Caravan GT


 


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