The Edelbrock 61857 Ford FE NHRA Pro-Port Cylinder head is designed specifically for the professional cylinder head porter and engine builder. Like the other Edelbrock Cylinder head, The Pro-Port cylinder head is also cast in the USA at the state-of-the-a Product Features:Bare Single For NHRA Super Stock45cc Combustion Chamber Volume170cc Intake/125cc Exhaust Runner Volume2.09 in. Intake/1.66 in. Exhaust Valve Diameter0.625 in. Deck Thickness
