blakss

iTrader: (4)

Any of you guys know if the GXP brakes (bonneville or grand prix) are a direct swap for SS guys? And anybody ever mess with the cobalt SS 4 piston brembos?

1BAD06MCSS

They should work. If you want my humble opinion and want performance brakes that will last a long time, I would go with a nice set of blanks with performance pads from Hawk, Brembo, or EBC. I have the slotted/drilled EBC set up and to be honest they are nice looking when I have my 22's on my car and offer more performance, but they also do wear faster than normal brakes and are more problem prone than standard brakes. Once again if your car is a daily driver, go with a nice set of blanks and performance pads. You will be more satisfied in the long run, take it from my experience.

blakss

iTrader: (4)

Yea I know your prolly right but I'm still trying to swap out something bigger and better than the factory dual piston. Something a little different and still efficient

Hawkins04

iTrader: (4)

I was thinking there was someone not to long ago that was trying to get the GXP calipers and things to work on an impala?

hazards280

Does the GXP actually offer more stopping power than the normal Grand Prix. Or is it just the rotors.

2005gxp

gxp has 13"? brakes iirc over 11"? on stock gp's and bigger pads i would imagine. i know my gxp stops alot better than my 98 gtp does.

Hawkins04

iTrader: (4)

Yes I think the GXP stops better than the regular Grand Prix maybe its just me but I think it does. the GXP has 13'' rotors and a regular GP has 11'' rotors not sure if that makes a difference?

GXP25

iTrader: (3)

12.7".

http://www.pbr.com.au/media/documents/OTMNov04_000.pdf

blakss

iTrader: (4)

so the gxp calipers and rotors should be bolt on right? i figure same spindle so why not? right.

TheMonteMan

http://www.zzperformance.com/grand_p...1041&catid=138

http://www.zzperformance.com/grand_p...1238&catid=138

evil 5.3

i think the gxp kit would look really good on an impy or mcss

Super LaX

I was surprised to find out that my Super has 12.7" front discs.......just not the fancy red caliper and drill holes. The press sheet says they come from the Lucerne.

havelegs

What are you guys doing for aftermarket rotors? The stock ones on the impSS are awful, mine are all glazed up.

TheMonteMan

how many miles are on your car? i thought id seen on here that people had had theres cut or replaced under warranty because of premature warping and glazing and what not.