TSP "CHOPacabra" Truck Cam Specs: 214/222 .495/.495 108 LSA 106 ICL Introducing the CHOPacabra NSR (No Springs Required) cam! This is a nasty little beast of cam. Designed to work with factory valve springs and a factory torque converter. If you're looking for that mean, snarling sound and performance that will leave your opponent second guessing what he just saw...this is it! Engines best suited for: 4.8, 5.3, 5.7, 6.0 (Equipped with cathedral port heads) NSR - No Springs Required - Designed for use with factory Valve Springs Factory torque converter friendly! Upgraded Rear Gear Required: No Operating RPM Range: 1200-6500 Power Increase: TSP Testing shows 60+HP Gain Drivability: Great driveability with an amazing chop! TSP "CHOPacabra" NSR No Springs Required Truck Cam Specs: 214/222 .495/.495 108 LSA 106 ICL. The CHOPacabra cam! This is a nasty little beast of cam. Designed to work with factory valve springs and a factory torque converter. If you're looking for that mean, snarling sound and performance that will leave your opponent second guessing what he just saw...this is it! Engines best suited for: 4.8, 5.3, 5.7, 6.0 (Equipped with cathedral port heads). Factory Valve Springs and Factory Converter. Factory converter friendly! Upgraded Rear Gear Required: No Operating RPM Range: 1200-6500 Power Increase: Under testing it gained 60+HP Drivability: Great driveability with an amazing chop!