VandykeT/A

I just bought a bone stock 43k mile 04 Z06. The car is in excellent shape but I noticed it has some slight sewing machine noise like a cammed car. Does the stock LS6 cam make a noticeable amount of noise or do I have some weak lifters? I'm assuming this is normal but just want to be sure. Car keeps good oil pressure also.

directnosfogger

maybe you have an exhaust leak? did you diagnose it from under the car?

TheWolfMatt

Posting a vid of the noise may help as there are loads of peeps on here that love to diagnose engine noises.

2000ultraZ1911

^^ true that lol

VandykeT/A

You would never be able to hear it in a video its some minor. It just has the ever so slight sewing machine sound from the valvetrain like that of a cammed car. Its definitely not an exhaust leak. My Trans Am and Camaro make the same noise but they have aftermarket cams and are louder.

therabidweasel

iTrader: (5)

Could be as simple as the oil you are using...My car has it more than I would like on Mobil1 10W-30, Rotella T6 5W40, and Valvoline 10W30 VR1 Racing Oil (Black Bottle). . .but I just switched to VR1 SynPower with 12ozs of Hy-per lube and it sounds great. My valvetrain is way built, but that's what I've seen.

2000ultraZ1911

Castrol edge titanium 5w30 and mine sounds real good. I was joking about the video I just ment there's a bunch of hard on that like to think they can diagnose a problem over there smart phone lmao. But if you read up ALL oil company tell to DO NOT RUN ADDITIVES .it throws off the chemical balance and makes things worse. Just find and oil that wrks for YOU and you'll be fine.