With the short-block assembled, Bob turned to installing the stock-style cylinder heads. Today, the better the heads, the more power. But that all comes with a price. For a good performing street engine such as this a basic set of small port, big combustion chamber castings are enough. With all new parts including stainless 2.02-inch intake and 1.60-inch exhaust valves there will be plenty of torque to get your car moving fast.