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[Z06] A couple of Z06 questions please...

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Old 02-20-2014, 01:31 PM
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ZR-1 Mark
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Default A couple of Z06 questions please...

I'm looking to trade my '02 Z06 plus cash for a C6 Z06.
Can someone explain to me the valve problem I've read about on occasion here ?

Also, the difference in the trim packages, 1LZ 2LZ and 3LZ..


I neeeds' to know !!

Thanks, Mark
Old 02-20-2014, 01:43 PM
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Rupert pupkin
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Exhaust valve drop and causes your engine to grenade. Its been a heaviliy talked about subject here, and youll find a TON of threads...good...bad...and the ugly. Its something to do with guides wearing out..valves breaking...some say its even bc of oil...Who knows?
Old 02-20-2014, 01:46 PM
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http://forums.corvetteforum.com/c6-z...lz-vs-3lz.html
Old 02-20-2014, 02:00 PM
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AzDave47
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If you get an in-warranty Z06, 3/36 b2b, 5/100 powertrain, then you don't need to do anything re the valve drop right away. Some of us got the GMPP warranty near the end of the 3/36 and extended that out for more coverage.

I personally would not run a C6 Z06 without warranty (GM factory or GMPP, which I have)unless I had the heads reworked by a competent vendor. That can be as low as $2K installed if no mods are done. If the engine lets go without warranty, then you are looking at the $15K neighborhood for a replacement LS7. You could probably get a suitable build non-LS7 for less than that.

These cars are an incredible performance car and are usually quite reliable. Getting one used is a real performance value if it has not been beat on or neglected. Having a competent Corvette mechanic do a pre-purchase inspection of a non-warranty car is a must. Even with that, you'd want to get the heads done on an out of warranty car. GM has been fairly good about honoring in-warranty cars, though some dealers have balked and some dealers are not very competent to work on these cars.

My opinions, others may be different.
Old 02-20-2014, 02:02 PM
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Originally Posted by AzDave47
If you get an in-warranty Z06, 3/36 b2b, 5/100 powertrain, then you don't need to do anything re the valve drop right away. Some of us got the GMPP warranty near the end of the 3/36 and extended that out for more coverage.

I personally would not run a C6 Z06 without warranty (GM factory or GMPP, which I have)unless I had the heads reworked by a competent vendor. That can be as low as $2K installed if no mods are done. If the engine lets go without warranty, then you are looking at the $15K neighborhood for a replacement LS7. You could probably get a suitable build non-LS7 for less than that.

These cars are an incredible performance car and are usually quite reliable. Getting one used is a real performance value if it has not been beat on or neglected. Having a competent Corvette mechanic to a pre-purchase inspection of a non-warranty car is a must. Even with that, you'd want to get the heads done on an out of warranty car. GM has been fairly good about honoring in-warranty cars, though some dealers have balked and some dealers are not very competent to work on these cars.

My opinions, others may be different.
AzDave very sound advice. I 100% agree with you.
Old 02-20-2014, 04:55 PM
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Dirty Howie
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Originally Posted by AzDave47
If you get an in-warranty Z06, 3/36 b2b, 5/100 powertrain, then you don't need to do anything re the valve drop right away. Some of us got the GMPP warranty near the end of the 3/36 and extended that out for more coverage.

I personally would not run a C6 Z06 without warranty (GM factory or GMPP, which I have)unless I had the heads reworked by a competent vendor. That can be as low as $2K installed if no mods are done. If the engine lets go without warranty, then you are looking at the $15K neighborhood for a replacement LS7. You could probably get a suitable build non-LS7 for less than that.

These cars are an incredible performance car and are usually quite reliable. Getting one used is a real performance value if it has not been beat on or neglected. Having a competent Corvette mechanic do a pre-purchase inspection of a non-warranty car is a must. Even with that, you'd want to get the heads done on an out of warranty car. GM has been fairly good about honoring in-warranty cars, though some dealers have balked and some dealers are not very competent to work on these cars.

My opinions, others may be different.
Thats good advise right there ..............


DH
Old 02-20-2014, 06:35 PM
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erichg1000
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I'd love to get into a C5Z06. My 06 with 30,000 miles could be up for trade lol! I did PRC 265 heads, LS7S cam, Pfadt headers and some other bits right at 30,000 miles. Did 5 hours of track time and then bought a racecar and have barely driven it since.
Old 02-20-2014, 08:05 PM
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I went from a H/C/I 02 Z06 to an 06 Z06 and for the most part couldn't be happier. With just an air intake and tune it made more rwhp and it's a lot friendlier to drive. I do miss the look of the FRC but I don't regret the decision at all. I'm planning on doing the heads before the winter is over, I just need to figure out what route I want to take.
Old 02-20-2014, 10:25 PM
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Originally Posted by AzDave47
If you get an in-warranty Z06, 3/36 b2b, 5/100 powertrain, then you don't need to do anything re the valve drop right away. Some of us got the GMPP warranty near the end of the 3/36 and extended that out for more coverage.

I personally would not run a C6 Z06 without warranty (GM factory or GMPP, which I have)unless I had the heads reworked by a competent vendor. That can be as low as $2K installed if no mods are done. If the engine lets go without warranty, then you are looking at the $15K neighborhood for a replacement LS7. You could probably get a suitable build non-LS7 for less than that.

These cars are an incredible performance car and are usually quite reliable. Getting one used is a real performance value if it has not been beat on or neglected. Having a competent Corvette mechanic do a pre-purchase inspection of a non-warranty car is a must. Even with that, you'd want to get the heads done on an out of warranty car. GM has been fairly good about honoring in-warranty cars, though some dealers have balked and some dealers are not very competent to work on these cars.

My opinions, others may be different.
Several good points in the above.
Old 02-21-2014, 07:52 AM
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JwT
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Originally Posted by AzDave47
If you get an in-warranty Z06, 3/36 b2b, 5/100 powertrain, then you don't need to do anything re the valve drop right away. Some of us got the GMPP warranty near the end of the 3/36 and extended that out for more coverage.

I personally would not run a C6 Z06 without warranty (GM factory or GMPP, which I have)unless I had the heads reworked by a competent vendor. That can be as low as $2K installed if no mods are done. If the engine lets go without warranty, then you are looking at the $15K neighborhood for a replacement LS7. You could probably get a suitable build non-LS7 for less than that.

These cars are an incredible performance car and are usually quite reliable. Getting one used is a real performance value if it has not been beat on or neglected. Having a competent Corvette mechanic do a pre-purchase inspection of a non-warranty car is a must. Even with that, you'd want to get the heads done on an out of warranty car. GM has been fairly good about honoring in-warranty cars, though some dealers have balked and some dealers are not very competent to work on these cars.

My opinions, others may be different.
Absolutely great advise. I would add only that usually (but not always) Z06 cars are traded in because some little(or major) problem has come up and the owner doesn't want to cough up the cash to fix it. Just have some cash to address the head wiggle test(or fix) and other parts that may need replacing. And as always....enjoy your supercar.
And by supercar I mean it can thrill you and kill you the same way.

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