Hows The STS Turboed 4.8L LS1 Rate Against Modern Muscle?
Last year, we tested the current crop of muscular sport trucks. On top, the Lightning, as expected, overpowered the SS and the Hemi in the acceleration tests with a 6.18-second 0-to-60-mph time and 14.62-at-97.48-mph quarter-mile e.t. The naturally aspirated SS and Hemi pickup trucks were more than a second slower. The SS Silverado high-output 6.0L managed to reach 60 mph from a standing start in 7.44 seconds and traveled the quarter-mile in 15.79 seconds at 87.47 mph for a distant Second Place finish. It barely edged by the Hemi’s performance of a 0-to-60-mph time of 7.7 seconds and an e.t. of 15.98 seconds at 86.84 mph. So our 15.87 at 91.3 mph puts our STS turbo’ed 4.8L in some factory-fast company – high-15-second e.t’s and mid-7-second 0 to 60 mph. And we haven’t begun to tune it yet. In addition, we’re very happy and grateful for the improved highway fuel economy. On a 200-mile round-trip highway cruise, our tester got 21.5 mpg. So if you’re looking for a power adder for your spo
