Just making sure before I buy the parts.. The calipers/pads should be from a firebird and the rotors should be from a 04+ nongxp grand prix right?

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

Or, the 12" Impala rotors. Are you doing this to your '95 GTP? I ask, because I have kicked this around with the Cutty, which is basically the same car. I have also thought about what it would take to put the current front brakes in the rear.

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One Big Ass Mistake America

12" impala rotors? Arent the 04+ gp rotors the exact same thing? And yeah im doing it to my gtp, I already upgraded to gen2 front knuckles.

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

They may be. It would stand to reason that they are. But, I do not know for certain. Now, you have me curious...what did it take to upgrade the knuckles?

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One Big Ass Mistake America

The 04+ gp rotors are 11.7" and I am unsure of the impala rotors at this time. They might be 11.9".

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'02 Galaxy Silver GTX Coupe. SLP Headers, SLP cat-back exhaust, SLP 1.8 RR, ZZP 3.4/3.25" MPS, SLP hood, SLP CAI, Overkill PCM, 180 t-stat, SSIC, S1 TB, AL 104's, F/R STB's, F-body calipers.

Well either way if the smaller grand prix rotors work i would prefer them because the pad grabbing area is the same so the extra would just be added rotating mass. As for the knuckles it was decently hard and very expensive. The balljoint is completely different so I had a set of cutom tubular control arms made for about $650. The upper strut mount isnt the same so I had custom camber plates/mounts made. Then i used all new moog parts (balljoints, tierod ends etc). For the springs I made a custom adjustable coilover setup. The entire swap was very worth it in my opinion. The balljoint position is adjustable, so is the position of top of the strut so upper and lower camber is adjustable as well as wheel spacing. This is gona be one sweet setup once i do the fbody upgrade.

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

Ah...well...never mind that, then. I would imagine, though, that the F-Body brakes could be retrofitted to the Gen1 W-Body, though.

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One Big Ass Mistake America

Even if it cant, the guy who made my custom suspension parts makes a 13" brake upgrade kit for gen1s. I just really liked the fbody kit cuz it fits under factory wheels.

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

I think I know what you're talking about. I can't, for the LIFE of me remember where I saw all that, though. Sure wasn't a cheap proposition.

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One Big Ass Mistake America

I run the LS1 Fbody rotors with my setup :dunno:

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04 GTT - Retired
Best ET 13.016
Best Trap 115.56 MPH

fbody rotors should have a different bolt pattern.. They shouldnt even fit.


http://www.overkillengineeringmotorsports.com - his stuff is top quality. its a little expensive but well worth it in my opinion.

So I just picked up the GP rotors, theyre huge compared to stock. Theyre like twice as thick! Im impressed.

Heres some pics comparing factory to the fbody upgrade

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

I test fit the Fbody rotors when I picked my setup off ebay used and had no problems with the mounting. After a year or so I picked up a set from Rotorpros for a fbody front and GP rear and have not had a problem in about 2 years.

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04 GTT - Retired
Best ET 13.016
Best Trap 115.56 MPH

the fbody bolt pattern is 5x120.65mm, the wbody pattern is 5x115. Im amazed that they fit at all!

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

you use a wbody rotor

the impala or teh monte
tehy have teh same lug patterns so the will fit

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will the ones i got work? they are for a 07 gp gt

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

they will be 10.XX inches

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Theyre actually 11.7" or 297mm. I wonder if those will work with the fbody kit.. Did anybody ever use gp rotors with the upgrade?

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

well i had fbody calipers on my caddy and they're 11.9 or 12 inch whatever you wanna call them. so all the fwd gms are really the same. i wasnt paying 1600 for the 14 inch baer dts setup and couldnt use factory wheels anymore

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http://www.cardomain.com/id/lacboi" onclick="window.open(this.href);return false;

F-body rotors work. The different bolt pattern doesn't matter because the holes in the rotors aren't as close in tolerances like say a rim would be. I am using f-body rotors and I've heard Ridin on Chrome say at least once a week that you can use f-body rotors. Sometimes you can find better options in the f-body rotors so its nice to know they fit.

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L26, Xp, zzp trans,3.29's, slp headers/catback, diy ported heads/LIM, 3 angle valve job,.052 MLS hg, outlet ported Gen V, N*, LQ4, 4" FWI, agx's, ssc's, f-bodys, gmpp sway's +stb's

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04 GTT - Retired
Best ET 13.016
Best Trap 115.56 MPH

Still just seems like a bad idea to me.. As far as wheels I know a 114.3 rim can break studs depending on the conditions and thats only 0.7mm off. I suppose being a rotor it wouldnt matter as much since its sandwiched in between the hub and the rim. The fastener never comes in contact with it so it should be fine. But If theres a rotor that works and has the correct bolt pattern why not just use it?

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-GREEN 1995 Pontiac Grand Prix SE - Rebuilt L82/5-Speed MTX +
-White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

Those are f-body rotors


See the extra space left over in the holes in the rotor

This is stock rear gp with stock gp rotors


I see the same left overs.

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L26, Xp, zzp trans,3.29's, slp headers/catback, diy ported heads/LIM, 3 angle valve job,.052 MLS hg, outlet ported Gen V, N*, LQ4, 4" FWI, agx's, ssc's, f-bodys, gmpp sway's +stb's