diverb

I'm looking to replace all my rotors and pads and the different brake kits have my 91 C4 broken into 2 different prices. With heavy duty suspension and without. I looked at the orginal window sticker and looked at my VIN# on Vette Facts, but I cant tell if my car has the "HD Suspension" Its not a big price difference in the rotors and pads, but I want the correct product.

Any thoughts.....? THANKS!

93Z07

FE1 is standard and FE7 is heavy duty.

diverb

And thats found on the VIN? My VIN does not have either

95tripleblack

Find your RPO codes I think under the center console in the 91

Go Here:

C4 RPO Codes

diverb

Wow I never knew what all those codes on the inside of the center console were for. Thanks guys, I have the FE1 standard suspension.

I love this forum, thanks for your help

rodj

Brake pads are the same ;irrespective of suspension option

93Rubie

No, if he had Z07 which replace Z51 in 91. It has the J55 13" front brake package, so it does matter. Since he has standard it is 12" front and rear.

endeavor

What about the rear brakes? Is there any difference in the calipers on the HD? Is there any difference in the rear rotors? -James

Alan777

They're the same. J55 is a 13" front brake instead of 12", no difference to the rear

KYbaldguysC4

Where would you find the codes on a 87 vert ??

Don

rodj

My '87 had the RPO label under the console lid.
If not there look in the storage boxes in rear

c4vette1988

I would like to do the same but I don't have a FE1 or FE7 code I have a z52 code is that heavy duty or just the z51's are heavy duty
thanks

nelson

FASTAZU

If you have J55 the only difference is the rotor & caliper on the front, they all use the same pads.

93Z07

Here is a chart you can see all the different rates.
http://www.wedophones.com/Manuals/Chevrolet/Corvette/1984-1996%20C4%20Corvette%20Suspension%20Tuni ng%20Chart.pdf

WVZR-1

I don't believe Z52 got the J55 (13" brakes), so you would need calipers, rotors and caliper brackets to the knuckle to put larger brakes on your '88 in the front. Measure a rotor and if it's closer to 12" it's base brakes and if 13" then it's J55 which might have been added along the way.

Z52 I believe just added shocks, wheels, engine oil cooler, I believe the 2 turn rack/pinion and HD radiator.

c4vette1988

Thanks your info was helpful

C4in mesa

What size front and rear sway bar do you have ?

Tom400CFI

Psssst; This thread is almost 3 years old.

WVZR-1

Psssst: but the response I and others have done are in response to this "recent" post to the thread which is #12. This should take you there:

https://www.corvetteforum.com/forums...post1587845879

Tom400CFI

Ah yes....indeed. I failed to read the whole thing, thoroughly. Excuse me while I go eat my crow filled, humble pie.