After the install we took the C5 over to Raceway Park in Englishtown, New Jersey. After a few runs the C5 blistered the quarter-mile in 12.55-seconds at 112 mph on stock tires. After some research and a look back into the Source Interlink Media archives, we found that a stock C5 of this vintage generally covers the quarter-mile in anywhere from 13.0-13.3 seconds. Victory! We gained about a half of a second of e.t. with rather simple boltons. Stay tuned as we up the ante with a set of cylinder heads, camshaft and intake manifold to aid in the annihilation of our goal. Photo: Thomas Lyman.