clearance on g body brakes

[ck80]

Just so as you know, stock gbody rotor was less than 11 inches. Clocked in at 10.5. So that's why your stock calipers wouldn't clear it, and why your pads/caliper sat further out than stock in the front too.

In case you're wondering why they worked in front and not in rear still

 

[Built6spdMCSS]

That looks like a much lower profile than what I have. It sounds like that’s what I’m going to have to make work on mine

Just snapped this right now, you can see how much room with a 17" wheel, can put my whole hand in there.

Plenty of room with a 15" wheel.

 

[thfleshman]

Just so as you know, stock gbody rotor was less than 11 inches. Clocked in at 10.5. So that's why your stock calipers wouldn't clear it, and why your pads sat further out than stock.

I have ran 11” rotors on my dirt cars both front and rear that utalize G body brake calipers for years. Even on stock front spindles. The pads actually sit really good on the rotors and the bracket is made for an 11” rotor. I see what you are saying though, if they made a bracket and rotor at the stock 10.5” size, it would definatly give me the clearance.

 

[Built6spdMCSS]

I have ran 11” rotors on my dirt cars both front and rear that utalize G body brake calipers for years. Even on stock front spindles. The pads actually sit really good on the rotors and the bracket is made for an 11” rotor. I see what you are saying though, if they made a bracket and rotor at the stock 10.5” size, it would definatly give me the clearance.

You mentioned that 10.5" numbers a few posts ago, those LT1 Fbody Rear Disc are 11.5" Rotors, and here's the Weld Wheels on my SS with them same LT1 Rear Disc Brakes back when I used to throw down on the track..

 

[ck80]

I have ran 11” rotors on my dirt cars both front and rear that utalize G body brake calipers for years. Even on stock front spindles. The pads actually sit really good on the rotors and the bracket is made for an 11” rotor. I see what you are saying though, if they made a bracket and rotor at the stock 10.5” size, it would definatly give me the clearance.

Exactly. You can have that thicker caliper body when you've got a lesser width rotor and they wind up configured to tuck closer in.

The other thing about the dirt track car experience you're referencing is that different wheels have the barrel of the rim tapered differently. Some are stepped to the centerline (generally newer wheels) giving more clearance, others are sloped (generally older wheels), giving less clearance and more potential for issues.

Then there's more that have thicker wall vs thinner wall, offsets and backspacing... that's why the old rule of 4" bigger than your rotor for clearance comes into question right along the borderline. Some brands and styles fit better than others when you're close.

It's also why a simple Google search of will xyz wheels clear xys brakes gives conflicting answers for identical rotor and wheel sizes... because the over variables weren't the same.