Flo-Tek offers one of the most affordable ways to add a set of aluminum cylinder heads to your Small Block Ford. 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. The Hi performance springs can be used on hydraulic roller cams up to .550 inches of lift. These Flo-Tek cylinder heads even come with a five angle valve job, you don't see that on most more expensive cylider heads. These heads are complete and ready to run. Sold individually.