ALUM20064ST2.02/1.601.550

Dart's Pro1 heads for small block Chevrolet engines are ideal for street performance enthusiasts and weekend racers alike. These heads are powerful, lightweight, affordable, and come fully assembled with valves and springs. Specifications: 200cc intake ports, 64cc combustion chamber, 1.550 double springs, 2.02/1.60 valves. 200cc cylinder heads are optimal for engines with 327 to 383 cubic in displacement reaching around 5,500 max rpm. The 1.550 double spring is intended primarily for engine applications using a mechanical cam. Cylinder heads sold individually, set required for engine use.