Re: spark plug recommendations !!
My LS7 o6 Z06 started cutting out slightly at the strip last year after sitting all Spring from 6000-7000 RPM. It wasn't flat like a plug but a surge.
Voltmeter showed normal across the posts. I had good plugs so I did a battery cell test and found one cell dead. These newer cars computer needs X amount of amps/volts to operate correctly. Changed out bad celled battery which was under warranty, AC Delco. Problem solved. These cars shouldn't be eating plugs like the cars of the 60's did. They eat more battery's then plugs. I've never pulled a bad plug yet with over 150 passes on a few Z06's unless I had a mech/issue. Knock on wood I haven't had any mechanical issues that would cause me to check my plugs. Remember we are still using a 12 volt system changed from 6 volt in 1955 to 12v when the V8 was first introduced to the corvette. In 1956 they added a higher CCA battery but from the 1950's on these cars have had a ton more electonic/electrical demanded on that battery. Check your battery cells if plugs are good.
61,64,67,76,87,90,90ZR1,2002 Z06 QS,2003 Z06 BLK.
2004 LS1 Convertible,2006 2LZ LeMans Blue Z06. 65 GTO,69 Z/28,70 1/2 Z/28,70 442,74-76 HD XLCH Sporsters.