Making Hubs
On my setup I am using 88-96 corvette C4-HD (13 inch) brakes which requires a larger offset hub (the heavy duty, HD, hub). The C4 HD 13-inch front rotors have a large offset (rotor inside hat to rotor rear surface), in order to fit the caliper bracket and caliper in you need a large offset hub to push the rotor out further. To achieve this larger offset you will need to create a hub with a larger offset by starting with a rotor that has a larger offset like the 88-92 F-body 1LE rotor. I have done this below, another option is to turn down a stock rotor and use spacers. I do not recommend the spacer method.
Brake upgrades using 88-96 corvette C4 Non-HD 12-inch (with C4 rear rotor), LS1 F-body, and corvette C5
& C6 setups you can machine down the factory 82-92 F-body rotor into a hub.
1) Since it's near impossible to find someone with a used set of 1LE rotors I started with a brand new set.
2) Spray on a penetrating oil (eg. PB Blaster) on the studs and let it sit for 15 min or so. Use a press to remove the studs or
tap them out with a hammer.
3) Now you need to cut the rotor off the hub to prepare it for machining on a lathe. I used a angle grinder, which is a simple
but effective way of doing it.
4) The hubs need to be machined on a lathe to take off the extra material so they will fit inside the hat of the rotor. Also then
need to be put on a lathe to make them round and balanced. For C4 and C4 HD upgraded take the hub down to 5.95 inches diameter.
5) Here is a final picture after they have been prepped with a coat of por-15 and are ready to go on the car.
Page created: January 2006
Page content last updated: 06-17-2009