Before my first DE in the Vette (and I was a DE veteran in a 94 RX-7 at that point), all I did was lower the car and align it with more front camber (making sure the rear of the car was higher than the front to prevent lift) and change the brake fluid (I now use Wilwood EXP 600 Plus which is 626F dry and 417F wet boiling point) and put on Goodridge SS lines.
During that DE, at Roebling Road in Savannah, I got oil temps approaching 300 degrees and a tranny overtemp warning at 274ish.
Before my second DE, I bought CCW wheels with Hoosier R3S03s, but didn't do anything else. I chose to run 17x10 front and 17x11 rear because I had my eye on SCCA T1 even back in 2001 and these wheels sizes are required by SCCA rules for the C5/Z06. At this DE, I also had oil high temps and I believe a tranny high temp warning. I controlled these by backing out of it, and/or pulling in early.
I put in a Cobra racing seat, but I'm not sure anymore if that was before my first or second DE.
Before my third DE at PIR in Portland, I added an oil cooler in the nose and T1 sway bars. At that DE, temps were much cooler than at Roebling, and with an oil cooler the oil temps were fine. I also did not get a tranny overtemp warning all day.
Then I caved and did the full SCCA T1 prep at Phoenix.
You can see my current mods here:
SCCA T1 Preps
I've heard that Sebring is a pretty fast track, so you may want to address the brakes first.
- stock calipers and rotors
- DRM brake ducts with Phoenix spindle ducts
- Goodridge SS lines with AN connections
- Carbotech XP10 front and XP9 rear pads (for use with R compound tires only)
- Wilwood EXP 600 Plus fluid
If you are interested in putting in some AMSOIL in the engine, tranny or diff, please drop me an email or PM and I'll set you up.