The Magic Stick line of camshafts is the most popular line of camshafts Texas Speed offers. The Magic Stick camshafts are designed to be a all out max effort camshafts for people looking to get maximum power from stock displacement engines. The Magic Stick camshafts require a high quality double spring kit such as the PRC .650" & .675" double spring kits. Both spring packages will easily handle this camshaft lift & lobe designs. THE Magic Stick 4 features several upgrades over the Magic Stick 3 that helps to create a larger power band with improved horsepower & torque at virtually every rpm! The result is the most powerful LS1 camshaft we offer! With the MS4 camshaft the customer must have atleast a 3500 rpm stall converter & 3800+ is recommended for automatic cars. Tuning will also be required in both automatic & manual applications. Texas Speed offers complete mail order tuning services to get your vehicles pcm custom tuned for your modifications.