I am doing an ls1 brake conversion on my 91 with all 2000 ls1 brakes. i have use of machines such as lathes and i was woundering does anyone know if u machine the braking surface of your stock 91 rotors can you use that as a hub instead of paying 500 dollars for the ones online?

 

Yes.

RBob.

 

What exactly is needed to install 4th gen brakes i been thinking of doing this to my car but dont know what i need to swap them in?
I hope you dont mind me asking this in your thread 91rallys

 

you make your own hub by cutting out the hub from the rotor make your rough cut down to the brake surface. i used my mini grinder takes about 20 mins per rotor then you gring down the back side of your new hub. then you take that to your machine shop to turn down the circumfrence,bring your new rotor to the machine shop and he will turn it down 20 bucks each

 

Thanks and how do i know how much to cut to make the hub.

 

Get a new LS1 rotor and measure the inside diameter of the backside. Your newly machined 3rd gen rotor/hub will need to fit inside.
Check out this link.
http://www.lukeskaff.com/car/brakes/hub.html

 

Ok thanks im gonna try that once i get some other rotors is there a recommendeation about which rotors to use to make the hub.

 

I made two sets of hubs from the original rotors that were on my 86 IROC and used another set from an 86 Sport Coupe.

 

Check out this website: www.bigbrakeupgrade.com They have the spindles, adaptor brackets, and hubs already modified for $369 for the pair. If you want the calipers, ceramic pads, and rotors included the entire kit is $675 for the pair.

 

i just brought the old rotors on my 92 down to a local machine shop and asked them to cut them down to fit in my 02 rotors.... best 50 i ever spent. i ended up bringing the other set i had laying around to have as spares.. i didnt need any spacers or anything. just made my brackets, bolted it all on my modified spindles, and just hit the road to test the difference.

 

Thanks FOr all the info. I work at a machine shop so ill just turn the rotors and put the rest together thanks.