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Discussion Starter #1
My son just purchased a 2001 Z06. We are slowly working through the items we need to fix. So far we have replaced the hazard switch and installed the LMC5 module. We are waiting on the knee bolster repair kit and will be flushing the radiator in the next few days. Then it will be tires. So as you can see, we will be needing some of the advice available here. This forum has helped us already.

We are researching the valve spring issue now. His vin is in the 12000s and we tried looking at the springs but it is difficult to see what color they are.

Thanks in advance for your help. We are in the Cleveland Ohio area if we can help any of you out.
 

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Welcome to the forum streetglider.

I haven't heard of too many problems with the beehive springs on the Z06 but if it give a piece of mind, replace them with dual springs and you never have to worry about dropping a valve.
 

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If your 2001 Z06 had the bad lot of valve springs they would have broke or replaced a long time ago
so I would not be worrying about them at this time and rather do all the other maintenance in replacing fluids on tranny, rear end, flush brake and clutch fluids and power steering fluid

De-carb engine with like Seafoam, cleaning fuel injectors,
Clean MAF & throttlebody, when doing so make sure no cracks or airleaks to airbridge and reconnect with no leaks
and check the belts for water pump and A/C, check or replace PCV valve

Also if unknown on age is replace the front 2 O2 sensors as they degrade after about 30,000 miles inducing false AFR readings
 

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Discussion Starter #5
This is all good advice. We have started on the fluids. We did get an O2 sensor code while he was learning to shift. We reset it but will change them as well.
 

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Any DTCs should be written down before deleting them as many of these are only triggered after X amount of drive cycles
Should see what the code means and if it was just one O2 or across all 4 of them

After replacing both front O2s is then using OBD-II scanner that does on-board smog tests to see with new ones if they get into a "complete" / passed state and check to see if the 4 fuel trims via scanner look close to good AFR and few engine knocks and misfires.
 
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