Question About J55 Option
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Pro
Joined: May 2002
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From: Conway SC
Question About J55 Option
I have a 1994 Corvette Coupe/automatic and I want to make sure my Corvette is NOT equiped with the J55 Option that included the bigger brakes. I believe these bigger brakes were part of the standard package on the Z51 and ZO7 packages. Is there an easy observation or measurement that can be made. Thanks 
Team Owner
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From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Rotor diameter is 13" so you can measure them. Also look at the RPO sticker under the center console lid and look for "J55". If your car has the Z07 Special Handling Package, the larger J55 brakes are part of that package (as is the FX3 suspension). Z51 was gone as an option, replaced by Z07.
Just out of curiosity, why do you not want the big brakes?
?? That is a very desirable option to have 
Just out of curiosity, why do you not want the big brakes?
?? That is a very desirable option to have
Thread Starter
Pro
Joined: May 2002
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From: Conway SC
I use my 1994 Corvette for bracket drag racing and I want to replace the stock front saw-tooth wheels and tires with Weld ProStar 15"X3.5" wheels and Monroso Front Drag Tires. From what I have been able to learn these wheels will directly mount to my 1994 Corvette Coupe without the need of a spacer and/or longer wheel studs as long as I do not have the J55 brake package. Before ordering everything from Summit I'm trying to make sure everything will fit as planned - perhaps I'm being a little too conservative and trying to check out too many angles. 
Elite Torch Red Member
Joined: Sep 1999
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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Bill, check your RPO codes for J55, it's onthat tag in the passenger hatch compartment.
If you have non J55, the Weld wheels will fit perfect, that's what I have.
If you do have the big brakes, don't tell Summit, they won't sell you the spacers. Just order them.
If you do find that you need the spacers, please get the longer studs.
The stock studs are illegal as they are, but tech doesn't check too closely.
If you have non J55, the Weld wheels will fit perfect, that's what I have.
If you do have the big brakes, don't tell Summit, they won't sell you the spacers. Just order them.
If you do find that you need the spacers, please get the longer studs.
The stock studs are illegal as they are, but tech doesn't check too closely.
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
Originally Posted by Mr Mojo
Bill, check your RPO codes for J55, it's onthat tag in the passenger hatch compartment.
If you have non J55, the Weld wheels will fit perfect, that's what I have.
If you do have the big brakes, don't tell Summit, they won't sell you the spacers. Just order them.
If you do find that you need the spacers, please get the longer studs.
The stock studs are illegal as they are, but tech doesn't check too closely.
If you have non J55, the Weld wheels will fit perfect, that's what I have.
If you do have the big brakes, don't tell Summit, they won't sell you the spacers. Just order them.
If you do find that you need the spacers, please get the longer studs.
The stock studs are illegal as they are, but tech doesn't check too closely.
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Originally Posted by bogus
Franky - the RPO listing is under the center console.
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Joined: Jul 2003
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by Mr Mojo
Different years I guess, my '95 has it under the hatch, I'll have to check the '93.
Yep, seems they could never make up their mind. 
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Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
I just looked at my '93, console as well.
