New Z06 owner in CO
Just wanted to drop a line and say thanks for all the excellent content on this site. I sold my PTE/TTE Miata a few years back and have been saving up for a C5Z for track use and finally found a good (but aesthetically rough) example that I don't feel too bad butchering up for use in NASA ST3 eventually. It's a 2003 Z with 111k miles and was sold to me as-is with no history. I took a bit of a gamble on it but the test drive showed it was actually well kept up and just needed some work for reliability improvements for street use. This is my first Chevy car (well first domestic car too) so I have been learning as I go and taking what I can find from this and other websites.
Since most of the modifications or work on this car were unknown besides the obvious bolt ons, I have torn down as much of the car to identify everything and modify as needed. I pulled and IDd the cam (COMP Cams XFI XE-R Camshafts 54-444-11), replaced the timing gear, went with an M295 oil pump to accommodate my 25 row oil cooler, installed an ATI damper, new accessories including a Turn 1 PS pump so I don't run into heat issues, Ron Davis radiator and DRM external oil cooler, poly mounts, flushed all fluids, stainless steel caliper pistons so to avoid a BBK for now, etc etc. It is running very lean at WOT which tells me the previous owner(s) didn't get this car properly tuned (and I found out the ECU is locked by a tuner so I had to get a flashed PCM) so it will be getting dyno tuned in a few days.
I am still in the process of finishing the base setup, with a Marrad ST3 driver seat, 315 Rival Ss on 18x10.5 Speedlines (square), probably the Van Steel JRI shocks and fr/r adjustable sways on stock Z06 springs for now. Once I get used to the car, I will do a full cage and dive further into suspension and aero tuning and if heat wrap around the exhaust doesn't keep the trans/diff temps down up here in CO, then definitely a trans/diff cooler. I learned from the Miata that heat management is the most important part of building a proper track car. Can't wait to see what this does!