Front Calipers for 1991 Vette ?

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Jun 8, 2014 | 09:45 AM

CFeria

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From: NJ

Front Calipers for 1991 Vette ?

Want to replace my front calipers on a 91 vette I just purchased, after calling napa as well as other auto parts stores they ask if I have HD brake's or not? How can I tell? I know the caliper has 2 pistons.

Thanks!

Jun 8, 2014 | 10:15 AM

Deakins

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From: Iowa

Heavy duty brakes have the larger 13 inch rotors on the front if I remember correctly. Hope this helps.

Jun 8, 2014 | 10:24 AM

c4cruiser

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From: Lacey WA RVN 68-69

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Quote:

Originally Posted by Deakins

Heavy duty brakes have the larger 13 inch rotors on the front if I remember correctly. Hope this helps.

This. Measure the rotor diameter. Stock brakes will have 12" rotors and the J55 heavy duty brakes have 13" rotors.

Jun 8, 2014 | 10:50 AM

CFeria

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From: NJ

Thanks so much, that's what I thought, BUT... since I don't have the front end apart yet and am trying to order all the parts for when I do, is there any way to tell other wise? like in the vin? If not I will have to remove one front wheel and see?!

Thanks!

Jun 8, 2014 | 11:40 AM

92ragtop

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Under your console lid, there is a label with all the RPO codes for that car. If there is no J55 code in that list, then you don't have them.

Jun 8, 2014 | 01:06 PM

bassackwards

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From: Nashville TN

Remove a wheel and take a pic of the caliper and post it here.

Most auto cars had JL9 (12") and most 6 spd had j55 (13") but this is not 100%

Jun 8, 2014 | 01:09 PM

CFeria

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From: NJ

Excellent! I did check the list under the arm rest and there was no j55, I do think I saw a jl9 so thank you very much! It has been very helpful!!!

Jun 8, 2014 | 02:39 PM

bassackwards

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From: Nashville TN

You can only trust the sticker if they have not been upgraded in the last 23 years. Lots of them have. Take a pic of the caliper and I can tell just by looking most of the time.