Flo-Tek offers one of the most affordable ways to add a set of aluminum cylinder heads to your Small Block Ford. You can do it yourself with these ready to assemble bare cylinder heads. These cylinder heads have a 180cc intake runner and 62cc exhaust runner, so they are great for street and off-road application were you would like to have good low in power. The 58cc cumbustion chamber, 1.94 inch intake and 1.54 inch exhaust valves make them a great cylinder head for most stock applications. These Flo-Tek cylinder heads even come machined with manganese bronze intake guides and phosphor bronze exhaust guides. Sold individually.