Available in wide variety of sizes

Using Clean Cast Technology which eliminates casting flaws, RHS aluminum cylinder heads are manufactured to outflow the competition right out of the box! The Pro Action cylinder head is the cornerstone of the RHS line and are ideal for hot rods, muscle cars and drag racing. Available in a wide variety of runner sizes from 180cc to 235cc and combustion chambers in 64cc and 72cc sizes with either straight or angled spark plug configurations. Each fully assembled head includes valves, springs, locks, retainers, seals, studs and guideplates. You are sure to make excellent horsepower and torque in your small block Chevrolet with a set of these RHS Pro Action cylinder heads.