NHRA's Brian Lohnes and Alan Reinhart were joined by Chelsea Clark, the owner of PSI Blowers, to talk about screw superchargers, one of the most awesome and impressive power adders ever used in drag racing. Screw superchargers are employed on the engines of Top Alcohol Funny Cars and Top Alcohol Dragsters, in loads of outlaw door slammer applications, and even on some Top Dragster engines.
What makes them different from Roots blowers? Why do they work so well? Why are screw superchargers more expensive to make? These questions along with yours were be answered by Lohnes, Reinhart, and Clark..