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Are 10 bolt rear and 9 bolt rear rotors interchangeable?

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Old Dec 17, 2020 | 05:52 PM
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Car: 1986 Camaro Drag Car
Engine: 383 on Ethanol
Transmission: Automatic
Axle/Gears: 4.86 Currie 9 inch
Are 10 bolt rear and 9 bolt rear rotors interchangeable?

I'm wondering if the brake rotors are the same between a 10 bolt rear end and a 9 bolt rear end? Obviously the calipers are different, but how about the rotors? I'm overhauling a 1989 IROC, and I have a 1986 IROC parts car that has all new brake components. I'm just curious if I can at least get by using the rotors I already have on the parts car?

Thank you in advance!!!
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Old Dec 17, 2020 | 06:06 PM
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Re: Are 10 bolt rear and 9 bolt rear rotors interchangeable?

If the calipers are different, then the rotors are too. (12" vs 10½")

If the calipers are the same, either both cast-iron or both aluminum, then the rotors would also be the same.
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Old Dec 17, 2020 | 06:08 PM
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Transmission: Automatic
Axle/Gears: 4.86 Currie 9 inch
Re: Are 10 bolt rear and 9 bolt rear rotors interchangeable?

Thank you!!
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