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Z51 front brake brackets

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Old 07-22-2018, 04:55 PM
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05 Wreck
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Default Z51 front brake brackets

I have a set of front brackets. Is there any way to tell if they are Z51. I know they are taller than base, but I have no point of reference. Thanx.
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Old 07-22-2018, 05:52 PM
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cam1969
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Do you have the rest of the car? If the rotors are 12.8", then they are z51 size.
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Old 07-22-2018, 07:31 PM
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I know rotor size difference, I know piston size difference on rear calipers, etc. All I have is a pair of front brackets with nothing to compare them to.
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Old 07-22-2018, 09:51 PM
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Originally Posted by cam1969 View Post
Do you have the rest of the car? If the rotors are 12.8", then they are z51 size.
the heavy duty rotors would be 13.4" and not what you stated
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Old 07-22-2018, 09:59 PM
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Originally Posted by 05 Wreck View Post
I have a set of front brackets. Is there any way to tell if they are Z51. I know they are taller than base, but I have no point of reference. Thanx.
from the center outside edge of caliper to outside edge of abutment bracket will be 3 1/2"s
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Old 07-23-2018, 12:41 AM
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HOXXOH
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Originally Posted by 05 Wreck View Post
I have a set of front brackets. Is there any way to tell if they are Z51. I know they are taller than base, but I have no point of reference. Thanx.
Your term "taller" also has no point of reference. The brackets on the J55 brakes, which were part of the Z51 option and other base car options, are .3" larger on the front and .5" larger on the rear than the base (JL9) brake brackets, measured from the centerline of a mounting hole to a similar maximum point on the outer casting surface that's on a radial line to the hub center as compared to a JL9 bracket.
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