rear brake upgrade help

[asite57]

this was just a thought and i was wondering if you guys have tried this, i want to upgrade my front brakes of my 99 gtp to the Fbody front calipers, but my rear brakes wound still suck. so my thought was could i put my old front calipers in the back?

 

[redlinepontiac]

with some custom brackets you could

 

[Fivefingerdeathpunch]

new rotors and good pads is all you need for the rear, they only do 30% of the braking, why bother messing with them.

 

[z3r0]

To be badass

Android Fire

 

[asite57]

actually on a grand prix the rear brakes do 10% of the braking i was just wondering if i could put my old front calipers to good use after the upgrade thats all

 

[Sandman]

How do you know how much work they do?

 

[boostedcompg]

umm not without ALOT of cost. you can just bolt on the gxp rears iirc

 

[asite57]

research

 

[Fivefingerdeathpunch]

Its far more than 10%

 

[Sandman]

And what kind of research is that?

 

[asite57]

its 10%

 

[dpzelenak]

id believe 15-20%
30 is to high and 10 isnt enough
if it was only 10% your better off taking the rear brakes off as a weight reduction,why?...


because Racecar...

 

[Sandman]

OK...since its 10% then why even bother with thinking of upgrading them? Get some good pads and call it good. Then only "upgrade" I would do is to swap to Grand Am brakes for the weight savings.

 

[Hippo Machine]

80% of the braking force is in the front. Any upgrade front or rear will help. I would bolt on some GXP ones in the back and call it a day, especially with HAWK HPS pads all around.

 

[boostedcompg]

I'm not sold on the grand am thing...with gxp's you get a vented rotor

 

[matt5112]

Where do your numbers come from?

Because I've never seen any weight transfer data nor any data on the proportioning valves for our vehicles.

Without that, you're lying.

Rear GXP's on a 97-03 is an easy swap, swap rotors and calipers done.

All you did was give yourself a larger more expensive rotor and pad package that provides the same braking.

And the more braking force you have in the front, the more weight transfer occurs, thus the more front brake force can be utilized by your front tires as you now have more available traction.

Thus making rear brake upgrades even less worthwhile unless you're increasing your spring rate significantly.

 

[dpzelenak]

on the gxp brake things,
what about the brackets?
do they just bolt up also, without drilling and tapping?

 

[Sandman]

I'm not sold on the grand am thing...with gxp's you get a vented rotor

Its also the rear brakes, since our guy says they do 10% of the work there isn't near as much heat generated in the rear as the front. I don't feel super awesome brakes are needed that much in the rear as to the front.