98-02 F-body vs 04 GTO LS1 brakes

[cdoggy81]

I'm looking at some of these conversion kits to put on my 1970 TA that use LS1 big brakes off 98-02 F-Bodies. I wanted to know if the brakes on the LS1 04 GTO are the same? The rotors are the same, they look darn close from pics, & they are both made by PBR but I don't have a F-Body set to compare 1st hand... https://static1.pt-content.com/images/pt/2007/12/gr_sad-1.gif
I know they beefed them up for the LS2 GTO's in 05-06 & are not the same. I think that is when they also beefed up the c5 to c6 ones as well...

[Skip Fix]

Here's some specs for you on the 04 rotors,calipers. The main difference in the 05-06 GTO are larger diameter slightly thicker front rotors and associated caliper bracket. A slightly beefier front caliper. Rear rotor vented instead of solid.

https://www.pro-touring.com/forum/showthread.php?t=29362&highlight=GTO+Brake

[cdoggy81]

The 05-06 GTO brakes means nothing to me. I currently have a set of 04 GTO brakes. I want to know if I can use those instead of going to the junk yard to get a set off a 98-02 F-Body car.

[Skip Fix]

"I know they beefed them up for the LS2 GTO's in 05-06 & are not the same. I think that is when they also beefed up the c5 to c6 ones as well..." Well excuse me for just explaining the subtle difference in the 04 to 05-06 brakes.

The GTO calipers are close to the same as the Vette ones,possibly the F body ones, but use totally different mounting brackets(and different between 04 and 05/6 as mentioned). You can adapt the GTO calipers to Vette/F body brackets I believe to use more readily available kits.Soem guys sell the Vette brackets to do that. The rotors are also a metric pattern not 4.75 like F body or Vettes, so would not be a bolt on unless you redrilled the pattern.

I've got extra of both 04 and 05-06(to upgrade my 04 GTO). I don't think anyone else has even tried to post the specs to compare and why I tried to start the other thread for all of us to swap but got little input. Many 04 GTO guys make the upgrade to 05/6 components so they are available at pretty cheap prices as I am sure you know.

Edmiller that often posts on www.nastyz28.com (http://www.nastyz28.com) might can answer your questions. He does alot of custom kits too.

[cdoggy81]

Thanks for the info!
I just got a used set of 98-02 F-body ones so when they come I will compare them to the 04 GTO brakes that way we all will know. I'm going to get the bracket kit & rotors from BRP Hotrods or Engineered Velocity.

[Skip Fix]

Yea I think just buying the Vette Brackets for the GTO calipers will bolt to them and then use the kits that Engineered Velocity etc have. I just wish we could find a more offset rotor than the c5 type so they would fit other wheels easier.