The LS dirt track engines are finally gaining momentum in the dirt world and racers are getting to experience first-hand what we have been talking about since 2011; the power, flatter torque curves, half the cost (in most cases) and lighter all aluminum builds. There are so many bonuses to this engine platform. What would you expect to pay for a 15° aluminum head with light weight 8mm valve stems (for a more stable valve train)? What about an aluminum head a with a 2.160 intake valve that will flow in the 350 cfm range with moderate porting? Or a…