Help with 12 bolt differential and wilwood brakes.

  • Thread starter crazypurgatory
  • Start date
  • This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others.

crazypurgatory

Veteran Member
Mar 4, 2006
864
West Palm Beach Florida
I am having problems getting a wilwood brake kit to fit my 1971 Camaro.
I'm looking at the 13 inch rotor kits well 12.88.
wilwood said that they don't make a kit for me because I have an off set of 2 7/8 of an inch between the axle flange and the face of the axle. they told me to call moser engineering because those are the axle's I have.
So I call them up and I told them what I have and I told them what axles I have they told me I have the right ones. I told them that my diff was 55 1/4 from flange to flange that's right to me I just looked it up. they tell me that's wrong and it should be 55 3/4. they asked me to measure the axle's they should be 30 1/16. mine are 30 1/8. so then the axle is too long but they won't say that all they say is that it's impossible because they use a BLA BLA BLA machine to cut the axles. SO what the hell do I do? I had my neighbor come over and he said to run the kit with the 2 3/4 off set and shim it out. I am looking at the Forged Narrow Superlite 4R Big Brake Rear Parking Brake Kit's they only come in offsets of 2.75 and 2.81. I'm going with those kits because I want the Calipers to match front and rear as I am going to get the 6 piston Calipers for the front.
So what do I do??? My idea is to buy the one kit with the 2.75 offset and shim it or if it does not work throw out my new axles that are the wrong size and get custom ones made.
The kit I'm looking at is 140-12964.
https://www.wilwood.com/BrakeKits/BrakeKitsProdRear?itemno=140-12964-D
I don't need to run the Staggered Mounted Calipers because I got a kit from ride tech that gets rid of the leaf springs and shocks for a upper and lower control arm and coil over's.
Help Help Help I need to figure this out because I found the kit on sale till the ned of them month for 1449 and free shipping. and that seems to be deal of the century or at least the cheapest Ive every found it.

Thanks,


Chris
 

dave@ztech

Veteran Member
Lifetime Gold Member
Mar 27, 2016
4,754
NY
Well I would see if RideTech has some advise, they might, and then you need to go back too Moser and get them to pony up the right parts, I had to go with the two rear calipers because of my rear, from Wilwood, as I couldn't get the park brake in the rotor to fit mine
 

$ Mike 70 Z-28

Veteran Member
Nov 7, 2002
1,342
New York, NY
did you measure the offset your self ?? or they just guessing for you . i know that you can interchange calipers they have alot of brackets as long it fits inside the rotor
 
This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others.

crazypurgatory

Veteran Member
Mar 4, 2006
864
West Palm Beach Florida
Well I would see if RideTech has some advise, they might, and then you need to go back too Moser and get them to pony up the right parts, I had to go with the two rear calipers because of my rear, from Wilwood, as I couldn't get the park brake in the rotor to fit mine

The only reason I mentioned the Ride Tech suspension is because it will allow me to to use rear mount calipers and not Staggered Mounted Calipers.

did you measure the offset your self ?? or they just guessing for you . i know that you can interchange calipers they have alot of brackets as long it fits inside the rotor
Nope I measured it I even got my neighbor to come over and measure it and we came up with the same thing axle off set of 2 7/8.
So I guess what I can do is either cut the face of the axle 1/8 of an inch or make a 1/8 of an inch shim to the axle flange out .
Out of those two options I would choose to make a 1/8 of an inch shim to the axle flange out.
Wilwood told me that I could not do that for some reason. :screwup:
So If my axle off set of 2 7/8 and I make a 1/8 shim on the axle flange then my off set would be 2.75= 2 3/4 Right?
so then I can buy the kit I wanted with the 2.75= 2 3/4 axle offset?
 

crazypurgatory

Veteran Member
Mar 4, 2006
864
West Palm Beach Florida
they have other company's out there for big brakes try calling them and see what they say
http://www.kore3.com/
https://bigbrakeupgrade.com/
https://bigbrakeupgrade.com/product/10-12-bolt-early-shim-pack/

I have to thank you for that third link on the shim pack!!!!:brightide
I would not be able to use there shims because they were too thin.
So I did a search and found a person on E-bay that has just what I needed a 1/8shim.:brightide
https://www.ebay.com/itm/Gm-10-12-b...283712788285?_trksid=p2385738.m4383.l4275.c10
There made of steel and not stainless steel nothing a coat of paint won't fix. :)
 

Latest posts

Top