Originally Posted by hairtrigger
Yes and it keeps the cylinder bores round after you bolt the head down, ensuring good ring seal which is critical for power.
Is there an echo in here?
Initial Success or Total Failure-US Army EOD
2013 Dusk Edition SS M6: Cold Air Inductions CAI, Ported/Polished Exhaust Manifolds, Corsa Sport, CTS-V brakes, Stoptech Slotted Rotors, Goodridge G-Stop SS brake lines, FR ZL1 Satin black wheels (20x10-20x11) Heritage Grill, ZL1 front rock Guards and 69 SS badges front, rear, and sides, tinted marker lights and windows.