Chevrolet’s light-duty pickup peak in engine size arrived with the 1990 C1500 454 SS, a 7.4-liter V8 bruiser wheezing out 230 horsepower for 15.7-second quarter-mile passes, while modern 6.2-liter Silverado 1500 trucks deliver 420 horsepower and 14.1-second sprints. Sadly, General Motors repeatedly failed to drop a Hemi V8 into its pickups. Corporate copyright infringement laws stop executives, leaving everyday gearheads limited strictly by thei…