Roots-type blowers — which are different from centrifugal or twin-screw superchargers — frequently dominate the front ends of modified muscle cars and street rods, especially dragsters and ...

First lobe-type blower resembling a supercharger created ... a Swedish engineer called Alf Lysholm patented the first screw-type supercharger, which is still in use today. The screw-type provides ...

$32,999 is the starting price of the Intercooled LS 3.0L Whipple 427, whose supercharger alone costs nearly 7,000 dollars. Whipple specializes in twin-screw blowers, a better design than Roots ...