Help with Ford 9" and LS1 brakes

[67rstbkt]

Originally Posted by BBPanel

Ok, just wanted to be sure I didn't lead you down a path to the same problem. I'll take a look but as I recall it was on the order of 0.030" or so.

I appreciate that. How did you deal with the bearing protusion, btw?

[BBPanel]

Originally Posted by 67rstbkt

I appreciate that. How did you deal with the bearing protusion, btw?

As I recall, I spoke w/Moser and they weren't concerned about it so I bolted it up and never looked back!
May not be as elegant but I suppose you could use washers on the t-bolts to mock up everything before having a 1/8" shim made or machine the backing plate. You could verify the axle offset needs that way too if you choose to user the spacer.

[67rstbkt]

Originally Posted by BBPanel

As I recall, I spoke w/Moser and they weren't concerned about it so I bolted it up and never looked back!
May not be as elegant but I suppose you could use washers on the t-bolts to mock up everything before having a 1/8" shim made or machine the backing plate. You could verify the axle offset needs that way too if you choose to user the spacer.

I started mocking it up, I see what you mean about the calipers. It's a tight fit. I'm wondering what would happen if I mounted them to the rear (clocked 180* from stock)?

I have not taken exact measurements yet, but it looks like my new axle would need to extend out (increased offset?) from the housing an additional 3/8" for this to work. I measured some washers I had and found some that were really close to 1/8" to space out the backing plate.

I based my measurements on a 98 Camaro I have access to; I figured that if I match those measurements, the brakes should be correct.

[BBPanel]

Originally Posted by 67rstbkt

I started mocking it up, I see what you mean about the calipers. It's a tight fit. I'm wondering what would happen if I mounted them to the rear (clocked 180* from stock)?

In my case it was an issue regardless of which side the caliper was on. Just depends on the shape of the frame.

[67rstbkt]

Originally Posted by BBPanel

In my case it was an issue regardless of which side the caliper was on. Just depends on the shape of the frame.

Thanks, I'll take some pics as I get further into this mock-up. I'm pretty certain I have a little more space compared to a Nova, so I may be able to pull it off. We'll see I guess. I'm assuming the S-10 brakes you used mount the same way, correct?

I'm thinking my plan at this point should be do what I need to do to get the LS1 brakes to work and as a last resort, switch over to the brakes you used.

[67rstbkt]

One more question on this regarding some other parameters:

1: the size of the axle flange (surface that the rotor will mate too) - The stock LS1 rotor appears to mount to a surface that is approximately 6 3/8" measured across, not diameter. Does the new axle need to be the same or can it be smaller? The axles I'm looking at are 5 3/4" across

2: the register - middle of the flange or hole in the center of the rotor. The rotor looks to be 2.775, the axle is 2.770. Is this ok being slightly smaller?

I know these two specs would fit since they are smaller than the full dimensions, just wondering if there is any reason why this would be a problem?

[67rstbkt]

Just want to say thanks for all the help, I've measured about a million times (at least it feels like that) and ordered my axles today. I have two ways I can go; first is to use the Camaro rotor, the second is to use the Corvette rotor. The Camaro rotor looks like it should work with my setup, but I may need to have that .105 machined out of the backing plate to make it perfect. With the Corvette rotor, I would have to space the backing plate out towards the rotor, so no machining. I'll decide when I get the axles and let you guys know what I went with.

[67rstbkt]

Just wanted to take a minute to update this with my solution. I ended up using the full Camaro setup (aka LS1 brakes) with the corvette caliper.

I ordered my new axles with a 2.5" offset, which worked out well with the new brakes.

To solve the problem of the Ford style bearing hanging out of the housing end, I took the backing plates to a machine shop and had them remove .105
They made a perfect cut and I like that the seal sits inside a recess rather than a plate sit flat against it.

If someone else decides to run this style brake on a Ford 9" with GM ends, I would suggest getting the flush mount housing ends so you do not have to worry about getting the backing plates machined.

I also reversed the sides so that the calipers are located towards the rear instead of the foward side of the wheel. There is a little more space for the large caliper clocking it this way. Also, this will change the e-brake cable configuration to a forward pull.

The rubber boots on the backside were very well worn and I could not find just rubber boots, so I used the rubber from my old B&M shifter to make new ones. I just cut a slit for the lever, slid over the new rubber, re-attached the factory cover, then trimmed off the excess (I don't have a picture of it).