C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Caliper/rotor upgrade

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Old Apr 4, 2014 | 04:59 PM
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Default Caliper/rotor upgrade

I have a question...

If I got a set of the "brackets" for mounting the C6Z brakes in my C4 and got a set of Wilwood C6Z calipers/rotors, would the brackets work?

Just thinking here...I want to upgrade, but I want something bigger than the stock diameter. I could use the OEM calipers and deal with the spread issues, or upgrade to Wilwoods and have some real calipers that would stand up to some abuse.

I just don't know if there are any differences in how Wilwood makes their caliper vs. the OEM ones and thus if the brackets are considerably different to mount them. Having never seen them up close and personal, it's a crap shoot.
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Old Apr 4, 2014 | 06:07 PM
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Originally Posted by 1991Z07
I have a question...

If I got a set of the "brackets" for mounting the C6Z brakes in my C4 and got a set of Wilwood C6Z calipers/rotors, would the brackets work?

Just thinking here...I want to upgrade, but I want something bigger than the stock diameter. I could use the OEM calipers and deal with the spread issues, or upgrade to Wilwoods and have some real calipers that would stand up to some abuse.

I just don't know if there are any differences in how Wilwood makes their caliper vs. the OEM ones and thus if the brackets are considerably different to mount them. Having never seen them up close and personal, it's a crap shoot.

At best...you might be able to mount up a 6C Wilwood kit to the adapters that are on the C4 bracket conversion...but I'd bet the centering is all out of whack at the least.

At that point buying "adapters" for the C6 and then the entire kit would be truly putting good money after bad given you can get an entire kit specific to the C4. No fuss no muss.

The calipers (Wilwoods) themselves won't bolt up to any of it without the related kit parts however. These calipers are more universal in the mounting (called radial mount) but require the dedicated bracket to each spindle it would be used upon.
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Last edited by Todd TCE; Apr 4, 2014 at 06:12 PM.
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Old Apr 4, 2014 | 07:07 PM
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I had that feeling...it was worth asking the question.

Of course...the other option is to fab up a bracket that puts it right where it's supposed to be.
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Old Apr 4, 2014 | 07:28 PM
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Originally Posted by 1991Z07
I had that feeling...it was worth asking the question.

Of course...the other option is to fab up a bracket that puts it right where it's supposed to be.
Absolutely. A custom made radial mount bracket to fit a FNSL6 for example onto the stock C6 rotor. Or better yet the W6A which is better suited to the 14" disc.

Not totally sure it adds up financially tho. You'll have an easy 1G into the parts, (1300 W6As) plus the rotors. And that's before you machine the brackets. If you can do it yourself it might pan out. A bit. But if you end up with $1500 in time and labor (pretty easy) you might still be dollars ahead on a pre fabbed kit.

But if its something you want to peruse; let me know. It's what I do.
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Old Apr 4, 2014 | 10:54 PM
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Rather than bolt bracket on top of bracket it would be better to just make a bracket for the caliber and rotor you want to use.
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