Straight from the pages of Hot Rod magazine comes this report on Chevy’s popular power mills. Covering modifying for horsepower, quarter mile techniques, racing Impala & SS performance, engineering the Chevy 348 and the Chevy 409, specifications & history. Great tips and techniques help you get the most from your Chevy for street or strip. Make it move with Hot Rod and the Musclecar and Hi-Po Engine series.