.

Is there such a thing as a cast iron performance head? You betcha--this Dart Iron Eagle Head for Chevy will give you the performance you want at a great price. It features thick port walls (extra meat for porting!) enlarged water passages multi-angle racing profile intake valve seats hardened and radiused exhaust valve seats and bronze valve guides. Its fully assembled with stainless steel valves valve springs locks and retainers. Not legal for sale or use on pollution controlled motor vehicles.
Specifications:
* Intake runner: 180cc
* Combustion chamber: 64cc
* Intake valve: 2.02 in.
* Exhaust valve: 1.60 in.
* Valve spring diameter: 1.250 in. single springs
* Valve guide diameter: 11/32 in.
* Straight spark plugs