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

88 rotor sizes

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Old Jun 22, 2007 | 06:31 PM
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Default 88 rotor sizes

....what sizes are the front and rear rotor sizes for my 88 coup? ......i don't have the helms here where i am at need the info....not sure if i have the z-51 or 52 suspension and not sure if it matters.......thanks again!
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Old Jun 22, 2007 | 08:58 PM
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Originally Posted by Da Mail Man
....what sizes are the front and rear rotor sizes for my 88 coup? ......i don't have the helms here where i am at need the info....not sure if i have the z-51 or 52 suspension and not sure if it matters.......thanks again!
Yes it will matter with the size, Z51 has the larger J55 caliper. Or option J55. Here is a link:

http://www.corvetteactioncenter.com/...8/88specs.html

napaonline.com also has data on their rotors for base and HD (J55).

12" for base, 13" for J55 or Z51.

I have my JL9 base brakes on my shop bench, calipers and rotors, if you need any other data. The front and rear appear to be the same size but the rear has extra holes, this may be for adjusting the parking brake. I didn't look further into that yet.
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Old Jun 23, 2007 | 05:36 PM
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.....thanks for the reply.....according to the original window sticker, this car has a "Z52 handling package" so, i assume it is a 12'' rotor, right?
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Old Jun 24, 2007 | 05:43 PM
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Originally Posted by Da Mail Man
.....thanks for the reply.....according to the original window sticker, this car has a "Z52 handling package" so, i assume it is a 12'' rotor, right?
That is the same as my car then, yes 12" on all four, the rears have extra holes though so are a different part number.
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Old Jun 24, 2007 | 06:04 PM
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Originally Posted by Aardwolf
That is the same as my car then, yes 12" on all four, the rears have extra holes though so are a different part number.
.....thanks for the reply...i was able to verify the info the other day....(i have a warped rotor and all have been turned to the minimum safety margins so, time for new (stock) rotors).....thanks.....
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