nc42acc
New member
Don’t get me started on the GM hydraulic cylinder on demand lifters. I have had two catastrophic failures luckily both were covered under warranty. I welcome the solid valvetrain.
the LT6's reliability remains to be seen but it will be a maintenance headache with a solid valvetrain. where most American iron use hydraulic valve lash adjusters, the LT6 uses valve caps and computer ground shims--another reason each LT6 is built by one person. Valve shims means more frequent and costly maintenance intervals (mostly labor). Unless GM has cracked the code on halving the necessary man hours to adjust the new valvetrain, me thinks the new Z06 will be costly to maintain.