VYMIKE

And i want to use AC Delco parts for the upgrade.

I have a 2008 base model with standard brakes.
I would like to get the drilled rotors and ceramic pads for the front and rear.
I looked up the part numbers on AC Delco's site and found the ceramic pads for both the front and rear, but there are 3 choices for the rotors for the front and 3 choices for the rears.?

The original equipment rotors are:
177-0924 front rotors
177-0925 rear rotors.

There is also a choice for Durastop rotors:
18A2429 or 18A2535 for the front rotors
18A2806 or 18A2807 for the rears

All the rotor part numbers are for drilled rotors.
The problem i am having is, which ones to order?
They all have different prices and all have different dimensions.

Has anyone done this upgrade with OEM parts?
I just want to make sure i order the right stuff.

Adam@Amp'dAutosport.com

Drilled rotors for looks? Your best bet would be a solid face rotor for performance.

VYMIKE

Not so much for looks, but heat dispersion. The ceramic pads are more quiet also.
The brakes I have now squeak all the time unless I am pressing the pedal hard. The car stops pretty good though. But not so great slowing from a high speed.

I am not made of money either. That's why I wanted to use AC Delco parts. That will keep my cost down.
If they're good enough for Chevy, they're good enough for me.

Bill Dearborn

Adam is correct on the rotors. Most people stay away from drilled rotors since they don't have as much mass (can't absorb as much heat) and are more subject to cracking.

As for different part numbers and sizes there are two stock brake systems for the base Corvette. The Non Z51 and the Z51. The Z51 system uses larger rotors front and rear although the front calipers are the same between the two systems GM reduces the piston bore diameter so proper front to rear brake bias can be maintained with the larger rear rotor diameter.

You can switch to the larger rotors (which by the way are drilled) but you also have to change the caliper mounting brackets. GM uses different caliper mounting brackets to radially adjust the calipers to the different rotor diameters. To do the swap to the Z51 system you would need to order 4 new mounting brackets, the Z51 rotors (which are more expensive than either the base or C6Z rotors) and the rear calipers.

Bill

HOXXOH

Many people refer to the J55 brakes as Z51 brakes, simply because they are one of the parts of the fairly popular Z51 performance option in MY '05-'09. They are also used as part of the F55 option in MY '07-'13 and as a stand-alone option in all base cars '05-'13.

It's important to note this, due to parts that are included in the '10-'13 GS model that are also designated Z51, however the brakes themselves are J56 on a GS.

To the OP: Better pads are a much easier way to get more performance. Rotor size won't make near as much difference as pads.

C6David

Just to clarify. For the rears you have to get different calipers switching from base to z51? I know for the front you do not have to. Is there something different for the rears?

timd38

Fronts are the same. The piston is slightly smaller in the rear caliper if you have a Z51.Since the Z51 rotor is bigger, the brakes have more leverage, thus a slightly smaller piston.

VYMIKE

Thanks for all the replies.
It gives me something to think about.
Maybe I'll just go with ceramic pads for better stopping and less noise.

irok

the base rear calipers will work fine with the drilled heavy duty rear brake rotors and abutment brackets

irok

you will not get better stopping with ceramic pads