If you use the f-body calipers do you also use the rotor? Front and back!?!?!? What would the smallest tire/wheel combo you could use?
Just asking so I can put these notes in my little book. I couldnt find much on this in the how-to section.
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08-29-2008
If you use the f-body calipers do you also use the rotor? Front and back!?!?!? What would the smallest tire/wheel combo you could use?
Just asking so I can put these notes in my little book. I couldnt find much on this in the how-to section.
08-29-2008
Yes. The F-body calipers are designed for a 12" rotor vs your 11" rotor.Originally Posted by justwhisen
The F-body upgrade is only for the front.
16" rims are the smallest that will fit.
08-29-2008
ok. why not the rear? are the calipers the same size? and just to clarify, I can use my stock wheels with this upgrade?
yea yea yea I know. shut up right.
08-29-2008
saber are you still at home?
08-29-2008
The honey comb 16' will NOT fit
08-29-2008
I have the torque stars.
<<<< blue car
08-30-2008
If you really want to do the rears, I guess you can. Most of your braking is done up front and the few who did the rears didn't notice a difference.
Being unfamiliar with GPs, I didn't know that. All Imp wheels fit.
08-30-2008
Many wheels will work, only stock wheels we know will not clear are these:
But these cross lace wheels will:
16x8 in size. These make awesome drag rims.
~F~
09-04-2008
First off the torque stars will fit cuz thats what i was running for a while and second of all if u want to do a rear brake upgrade there are 2 options a GXP swap or the bear big brake upgrade. Both over priced new for what they do but if you can find a GXP rear setup at a junkyard for under 300 id def do it. Stopping improves some, not a bunch but i still noticed a difference,and it looks amazing with 12" rotors all around.
09-05-2008
Did you use a Grand Prix GXP or a Bonneville GXP? Anything I have looked at for the Grand Prix GXP shows 11" rotors, which is the same as stock. The Bonneville GXP has 12" rotors, though. So is it a direct swap? Do you have to replace the brackets?
09-05-2008
Well grand prix GXP have 11.7" rotors while stock are 10.9. Its the same kit that the w-body store sells. the rear GXP caliper clears the rim by about 2 mm maybe 3.
09-05-2008
In the rear? What year?
09-05-2008
In 2005 is when the GP GXP came out and it ran until 2008. so between 2005 and 2008 and yes that is the rear setup. A lot of times I've noticed on junk yards they've listed the part as a GXP but I've called and they listed it wrong. It jus takes some time an research to try to find a set from a junkyard and you might have to buy the front and rear all together. The fronts are a 12.7" rotor and require a 17" rim to run them but it still should be cheaper to buy the front and back then sell the fronts if you don't run 17"s year round. Thats actually what I did.
09-05-2008
Huh, RockAuto and everywhere else I have looked shows a 10.6" rear rotor for the GXP's.
09-05-2008
Thats because rock auto and every other parts warehouse stocks the wrong part. Theres actually a post about that on clubgp lol. You just have to trust me on this one. Don't go to an auto parts warehouse off the internet unless its GMPartsDirect or the W-body store for this setup. Or of course look on car-parts.com and call the junk yard before you order the part.
09-05-2008
Also another easy way to tell if its actually a GXP rotor and caliper is all stock rotors for that car are drilled and the calipers are made by PBR.
09-19-2008
so what is needed to convert to the F-body fronts? other than the rotors and calipers?
might pull the brakes off the bird since it is not moving
09-19-2008
Are there any improvements or is it otherwise worth it to upgrade the rears on a GTP with the GXP set up? What are the differences between the two set ups? I take it by your comment that the rear GXP brakes can be run on the GTP without having to go to larger wheels?
09-21-2008
Sorry i havn't been keeping u on this school works been killing me but for the fbody question here's the answer
McMaster-Carr
Part# 6679K16 Desc: Metric Steel-Backed PTFE-Coated Brnz Bearing for 12 mm Shaft Diameter, 15 mm Length Price: $2.45/each Qty: 4
and that's it. heres an instal write up.
ClubGP Message Forum troubleshooting
MAKE SURE ITS FROM A 98-02 F-BODY
Last edited by bula81069; 09-21-2008 at 08:16 PM.
09-21-2008
There are improvements. rear gxp can be run with the torque stars, crosslance is a no, Im actually running the torque stars and it u want a pic of the clearance i can do that let me know. The price of 600 at the wbody store in my opinion is not worth the it for the improvement you get but if u can find it for like 300 it is. also front GXP rotor is a 12.7 inch and will not fit stock rims. it requires a 17" one. hope this helps
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