bjmsam

80k miles, drivetrain is stock other than oil cooler thermostat, no problems encountered other than failed fuel level sensors, all valve to guide clearances within service limits when checked at 62k miles.

no0one718

2006 z06, 73k miles, 2nd owner. Heads were replaced under warranty due to out of spec guides at 57k miles. no issues ever, have done approximately 25 track days, two cross country road trips, 30 drag strip passes, countless autocross events...

jus jetn

07 Z06 bought last year 49k all stock... put 5k in 6 months.. H/C/E/I going in now. Valve guides slightly out of spec

Joe Wendell

2007 59k miles HCIE at 36k miles

427C62013A

2013 427 Convertible 5800 miles Stock

Plan to do heads before next October when my warranty expires.

bbrecoverpass1

07 z06 31,000 miles 2nd owner. bought it in jan 2017 with 21,000 miles six speed. corsca pipes, kenwood deck and 1000 watt kenwood amp from previous owner.
everything on LS7 stock as far as i know.. drive it every day...it has been something my son and i enjoy together.had no idea how fast z06 was until test drive..WOW...

maybelooking

2008, just turned 30k miles. Completely stock. Heads will be done this coming spring.

El Paso Vette

2009 Bone stock with 55,000 miles. Best car I have ever owned.

2FastCorvette4U

19,496 miles on my 08 Z06

hotrod03

Good for you! Mine has 6k miles four guides out of spec! Receiving heads thursday

Dale1990

2006, 45k. Wiggle test at 30k showed a few valves at or just over the limit so they went off to AHP for some work (MS90 + .030 mill). Other than that, just headers, MF103 and a tune.

eagle7175

07, 25k, all stock, getting new tires in spring, original goodyear runcraps are still on car.

hotrod03

Khole recommended .020 for me you probably have lower dynamic cr. ?
I have stock cam. Cr 11.4

Uncle Meat

2009 Z06 with 52K miles now. Still on stock heads.

U.M.

AzDave47

early 09Z bought used stock at 8500 miles, full HCI done at 46K miles, now at 55K.

OEM cat replaced for check engine light then ECM reflashed when 2nd check engine light came on and I showed the dealer the GM TIL that said not to replace cat for that code. Battery replaced in 2015.

ATC399

13Z original owner 20K+...Stocker..

hotrod03

OMG you are lucky! But a scary situation

Dale1990

Stock cam here, too. I went with a .040 head gasket so I should be close to 12:1 (I think?). I ran the details past Kohle and he didn't see a problem. I have easy access to 93 octane gas, though.

hotrod03

Cool wish I could understand it better. I wanted 12/1 but 92 only available.

keeso6z

2006 VR Z06 with 2,580 miles. Bolt-ons with heads done - wasn't going to take a chance on dropping a valve.