hoacha

Hey folks!.. Well my z06 is my first Chev in many years and cant be happier!.. I picked up my 2003 without knowing about what the car has been through or how it was driven by the previous owner. To my surprise i got a Corsa cat back system on it . Now heres my question.. While decellerating its got some nice crackle out the exhaust, and the cars got a nice little rock to it at idle.. Well i know the 03's have a beafer cam, so i dont know if this is normal, or abnormal!!.. It does have cats on it and passed an emmisions test, so i assume its running normally, not missing or anything.. the power is lacking by no means..Lights up the tires easily in 3rd whish is a bit crazy at times.. I cant tell if the motors been apart. Its pretty clean. Any input would be awesome!!..thanks.

striper

When idling there's just enough shake to remind you that you've got a hot rod at your feet. It smoothes out as soon as you increase the rpm's. I own an '03 Z also. I bought mine new and it still drives as good as new at 100k miles. Good luck to you and welcome to the forum.

Supercharged111

Mine doesn't really shake that much. Sometimes it does a little, I thought it was plugs or something, but I think that's just the way it is. Certainly doesn't have a lope, so not that kind of shake. I think the ****** factory motor mounts are partly to blame, how do you like the rattle when you turn the car off?

BlueTeamZ06

It has a bit of Rock-n-Roll even stock, how many miles does yours have?

The Corsa will put a little more noise and rumble out for sure.

Change all the fluids, pull the codes, if you want do a compression check. If you find any metal shavings in the fluids/on dipstick get serious. Otherwise drove it like you stole it

Zmeister

Welcome to the Forum and congratulations on your purchase!
My '04 Z idles pretty smooth. Just a slight bit of vibration. Pretty mild mannered for such a potent package.
These cars seem to be nearly indestructable. You should be looking forward to many years of driving fun.
Don't hide it away in a garage. Take it out and show it how much you love it!

ctusser

I remember my car had a little shake at idle when it was stock cammed, my dad even commented on it.

Paul 75 L82

Shake, Hell Yes! And now that I have the Texas Speed 228R and the Borla exhaust at a stop light it shakes and sounds so good. These are great cars.

AU N EGL

shake? hmmm 112+4 cam, solid motor mounts and an aluminum seat bolted to the floor, Lts, and straight pipes.

Could mix a martini

skyavonee

Get new tires. When I bought mine, it had 7-year-old stock tires and easily spun in 3rd gear. After putting on soft summer tires, I could floor it throughout 2nd gear without loosing traction, as long as the tires/road were warm and I didn't stab the go pedal too quickly.

machz800ps

Congrats!!
FYI 02-04 z06s all have the same cam
My 04 also has a little shake at idle (very little)
Steve

Omaha02Z06

tremor1

how do you like the rattle when you turn the car off?

Push the clutch pedal in when you turn the engine off and it won't rattle.

Moto One

Is it possible that the flYwheel has been changed out for a lighter single mass one? That will let it Rattle in the trans and shake at Idle.

Mark

Lt. Dan M.

My 02 with 26K miles on it shakes a little at idle. I would tend to think it is the cam, these cams by old school standards is quite an aggressive cam. Also, had the OEM tires on it and I could break them loose 1st thru 4th. Put Nitto invo on the back and it sticks like glue now.

hoacha

Gentlemen..THANKS FOR THE REPLIES!!..i was away for a bit and neglected to check the forum.

I guess the cam profile would be responsible.. The motor mounts appear fine . Havnt checked compression , but dont think thats the issue..The corsa exhaust does give alot of a backfire upon decelleration though (cam lobe overlap?).. Sounds pretty aggressive .. I almost suspected the previous owner cammed it when i compared it to the half dozen other cammed cars i've owned..

Is the slight backfire and crackle a characteristic of Corsa exhaust upon deceleration?..Not that im complaining..I love it!!!

oh, the rattle at shut off is awesome..lol..

milage is 100k

TheDVS1

That's not backfire - that's exhaust REVERSION baby! To me that's just one of the great things about a Z and a good exhaust. Enjoy!

Blue Blood

The "backfire" you are describing is an indication that the car needs a tune. After installing LT headers my car was running lean, tuning solved the problem and helped the car to run better.

hoacha

Interesting.. I should have it tuned.. I am imagining i need to find an experienced tuner in my area.. What is the ballpark price range for a tune if you dont mind me asking?

skyavonee

In SoCal, dyno tunes typically run $450 - $550. It's totally worth it if you have headers. But if you only have a catback exhaust, or intake and catback, then I'd hold off on tuning if there's a chance that more performance mods are in your future.

Silnus

Your lighting up the tires in third gear? If that is the case you either have a sh!tty set opf tires, or you could have a cheatR cam in there. Had it on the dyno or track?