For the LS engine folks looking for serious power, this Texas Speed Magic Stick Stage 4 cam kit is a well-known beast. It's an aggressive, max-effort cam designed to make big power on stock displacement engines. The specs are 239/242 duration, .649/.600 lift, on a 111.5 LSA with a 110 ICL. This kit isn't just the cam – it includes everything you need to install it safely: a PAC .660\ dual spring kit with titanium retainers, hardened seats, new valve seals, and a set of 7.400\ chromoly pushrods. This is NOT a drop-in for a stock car. You'll need supporting mods (like a high-flow fuel system, possibly heads) and a professional tune is absolutely mandatory. For automatic transmissions, you'll also need a high-stall torque converter (3800+ rpm minimum). If you're building a street/strip monster or a dedicated track car and know what you're doing, this cam can deliver incredible results. Makes a killer lopey idle too. Not for beginners!
