TSP's all-new line of LS3 camshafts are the result of our latest round of engine dyno camshaft development using our state-of-the-art Superflow 902 engine dyno. Using a brand new LS3 crate engine, we started from scratch to build the most powerful LS3 camshafts available in the country. Texas Speed & Performance continues to test and develop new designs to make sure that our customers have the BEST camshafts available! The Stage 3 231/246 camshaft is a great choice for customers wanting a more aggressive camshaft with excellent power gains. This camshaft is an excellent choice for customers wanting more power than our 229/244 and wanting a bit more of top-end power. We recommend a minimum stall speed of 3,200 RPM for this camshaft in auto-equipped vehicles. We recommend this camshaft for LS3 or LS2 engines using L92/LS3 rectangle port cylinder heads! - - - 231/246 .640"/615" 111 LSA, 109 ICL