Hello all, LS7 Valve guide issue summary: • Affects a small, number of '08, 09 ’10 and ’11 Z06’s • GM discovered the condition through our cylinder head warranty data involving a very small percentage of our vehicles. • Through inspection of returned heads, it was determined that a machining...

Stock Z06 Wheel/tire sizes 2006+ Z06 Front: Wheel size: 18 x 9.5 Offset: +40mm Tire Size: 275/35/18 Back Spacing: 6.82” (173.35mm) Rear: Wheel size: 19 x 12 Offset: +59mm Tire Size: 325/30/19 Back Spacing: 8.82” (224.09mm)

Stock Z06 Wheel/tire sizes 2001-2004 Z06 Front: Wheel size: 17 x 9.5 Offset: +54mm Tire Size: 265/40/17 Back Spacing: 7.38” (187.35mm) Rear: Wheel size: 18 x 10.5 Offset: +58mm Tire Size: 295/35/18 Back Spacing: 8.03” (204.05mm)

I am thinking of adding the Edlebrock eForce supercharger (if I can rob a small bank) but I have read that the cylinder walls are too thin in LS7 engines due to the large displacement and I will probably end up ruining the engine (that is why GM went of 6.2L displacement for LS9). I believe the...

Took the car to MSRH this afternoon to see just how the C7 Z07 19/20 Michelin Pilot Sport Cup 2s would handle the cool winter weather. Took a laps or 2 to get up to temp and after that they were very predictable. But I think the larger rolling diameter of the 19/20's is throwing the Active...