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[Z06] Does this engine look stock? 2002 Z06

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Old Oct 2, 2017 | 06:40 PM
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Default Does this engine look stock? 2002 Z06



Hey guys,

already started a thread about my purchased used z06 so I will keep it short. Does this look stock?

Last edited by FL320BUS; Oct 2, 2017 at 06:40 PM.
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Old Oct 2, 2017 | 06:54 PM
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Internally who knows.


Externally I see headers with EGR still, CAI and catch can.
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Old Oct 2, 2017 | 06:56 PM
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Originally Posted by PeteZ06
Internally who knows.


Externally I see headers with EGR still, CAI and catch can.

Interesting. Just bought it, Inspection checked out and maintenance records.

Last edited by FL320BUS; Oct 2, 2017 at 07:02 PM.
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Old Oct 2, 2017 | 09:05 PM
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Any cats below? Picture? X pipe Or factory H?
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Old Oct 2, 2017 | 09:09 PM
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Originally Posted by grantv
Any cats below? Picture? X pipe Or factory H?
I'll get some pictures below tomorrow, I'm still trying to figure out what www done to this car
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Old Oct 2, 2017 | 09:52 PM
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Originally Posted by FL320BUS
I'll get some pictures below tomorrow, I'm still trying to figure out what www done to this car
Maybe post a video of it idling (fully warmed up), might be able to tell if someone dropped in a cam.
Also take a pic of the mufflers so someone can ID them for you. ​
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Old Oct 2, 2017 | 10:04 PM
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Originally Posted by grantv
Maybe post a video of it idling (fully warmed up), might be able to tell if someone dropped in a cam.
Also take a pic of the mufflers so someone can ID them for you. ​
ok I will do that tomorrow, today getting an oil change and tune up the guy there said that it sounds cammed. It's still there today so we will find out tomorrow. Another interesting thing with this car, and I'm not sure if it's all Z06 but the car will stall out below ten unless your are riding the clutch, as soon as you drop below 10mph it starts to stall. It just wants to go that car

Last edited by FL320BUS; Oct 2, 2017 at 10:07 PM.
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Old Oct 2, 2017 | 10:11 PM
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The Z06 does come with a bit of chop stock. An unknowing ear might think an aftermarket cam, a friend thought that of mine when he first heard it.
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Old Oct 2, 2017 | 10:13 PM
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Originally Posted by grantv
The Z06 does come with a bit of chop stock. An unknowing ear might think an aftermarket cam, a friend thought that of mine when he first heard it.
very true, who knows
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Old Oct 2, 2017 | 11:03 PM
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you could pull a valve cover off and look at the valve springs.if they are dual springs it more than likely has a cam.
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Old Oct 3, 2017 | 10:55 AM
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Originally Posted by jonnyc
you could pull a valve cover off and look at the valve springs.if they are dual springs it more than likely has a cam.
Well just for back from the performance shop, Its running exactly what you guys mentioned externally, internally it's cammed and running a cat back x pipe
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Old Oct 3, 2017 | 12:30 PM
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Originally Posted by FL320BUS
ok I will do that tomorrow, today getting an oil change and tune up the guy there said that it sounds cammed. It's still there today so we will find out tomorrow. Another interesting thing with this car, and I'm not sure if it's all Z06 but the car will stall out below ten unless your are riding the clutch, as soon as you drop below 10mph it starts to stall. It just wants to go that car
Then its cammed as well. I see the headers/intake on there, guy is running the car w/o the engine cover.....I just had my C5Z cammed w/ a "mid-level" type cam & where I used to be able to just let the clutch out progressively w/ NO throttle in 1st to get going on even slight inclines (& from a dead stop in 2nd on flat ground) - I now need to give it more gas & release the clutch a little later/higher.

There is no chance a stock C5Z w/ the stock gearing would want to stall w/ little gas in 1st from a stop.

Try putting it in first in a parking lot & get it rolling, let off the gas & see if the car will just continue idling & pulling or if starts bucking & sputtering, if bucking its cammed...but based on what you described I'd bet money it is.
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Old Oct 3, 2017 | 01:10 PM
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Originally Posted by C5Dobie
Then its cammed as well. I see the headers/intake on there, guy is running the car w/o the engine cover.....I just had my C5Z cammed w/ a "mid-level" type cam & where I used to be able to just let the clutch out progressively w/ NO throttle in 1st to get going on even slight inclines (& from a dead stop in 2nd on flat ground) - I now need to give it more gas & release the clutch a little later/higher.

There is no chance a stock C5Z w/ the stock gearing would want to stall w/ little gas in 1st from a stop.

Try putting it in first in a parking lot & get it rolling, let off the gas & see if the car will just continue idling & pulling or if starts bucking & sputtering, if bucking its cammed...but based on what you described I'd bet money it is.
Just got it back and it is confirmed cammed . Yeah if your in first if you aren't adding gas below 10mph the car bucks terribly and than stalls.
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Old Oct 3, 2017 | 02:15 PM
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Originally Posted by FL320BUS
Just got it back and it is confirmed cammed . Yeah if your in first if you aren't adding gas below 10mph the car bucks terribly and than stalls.
Solution; add gas.
The only bad part of this IMO is not knowing what it is.
Would still like to see a video.
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Old Oct 3, 2017 | 03:20 PM
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Originally Posted by grantv
Solution; add gas.
The only bad part of this IMO is not knowing what it is.
Would still like to see a video.
I'll post a warm idle when I get home
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Old Oct 5, 2017 | 11:45 AM
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Default C5z idle

Originally Posted by grantv
Solution; add gas.
The only bad part of this IMO is not knowing what it is.
Would still like to see a video.
Here is a warm idle
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Old Oct 5, 2017 | 11:52 AM
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That is not a stock cam; sounds great!
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Old Oct 7, 2017 | 05:11 PM
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Interesting that you try to find out what it has in it or if it's stock AFTER you buy it.

Sad for you good for the seller

Originally Posted by FL320BUS
Interesting. Just bought it, Inspection checked out and maintenance records.
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Old Oct 7, 2017 | 05:13 PM
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Originally Posted by pbergmann
Sad for you good for the seller
I'd be happy with those mods if I were looking for a red coupe.
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Old Oct 7, 2017 | 05:42 PM
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Originally Posted by pbergmann
Interesting that you try to find out what it has in it or if it's stock AFTER you buy it.

Sad for you good for the seller
Well I can't deny you are right , I had looked at numerous c5z and this one was immaculate 15k for 60 thousand miles. If you can find one in that condition at that price let me know. All the records checked out and the car was serviced. Anyway I would have planned on doing mods at some point. I guess being 24 didn't help

Last edited by FL320BUS; Oct 7, 2017 at 07:50 PM.
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