World Products have been casting their own small-block heads and now they have a bigger better small-block head, Mo Town 220 cast iron cylinder head from Super Chevy Magazine.

These production Vortec heads were used in the new Vortec 350ci engine intended for -, -, and 1-ton Chevy pickups. Amazingly, this mundane, production-based 1.94/1.50-inch valve head performed ...

Check out this 606hp Chevy 383ci Small Block motor using iron Vortec heads built by Randy and Rick Ferbert for the Engine Masters Challenge - Popular Hot Rodding Magazine ...

GM's 706 Vortec heads are the cheapest and most effective heads you can use on your 4.8-liter and 5.3-liter, and even some 6.0-liter LS engine builds. Bold statement? Well, not really.