Sportsman Stainless Steel Valves; LS1 Exhaust 1.57 x 4.930 with .170 Tip
To increase flow without increasing the valve diameter, high flow underhead fillet relief was designed in. In addition, the swirl-polished fillets generate a higher flow rate with reduced radial crack propagation, increasing their resistance to failure.
• Variety of diameters & stem lengths for street/competition engines – affordable!
• Made from 21-4N forged high strength steel alloy for performance & durability• Recommended for all hydraulic, mechanical and roller lifter valve trains • Chrome plated stem and hardened tip don’t require lash cap• Spiral polished & high flow underhead machining for maximum flow