Intended for 500-plus cubic inch engines, Trick Flow® R-Series A460 Intake Manifolds deliver significant performance gains. These single quad intake manifolds feature a special one-piece, spider-type design with high-flow, extended individual runners and a raised plenum floor that significantly increases power in the 3,500-8,000 rpm range. Additional features include lightweight and durable A319 aluminum construction, plus bosses for nitrous or fuel injection and a Dominator-style carb mounting pad. Overall height to the carburetor mounting pad is 8.575 in.These R-Series A460 manifolds can only be used with Trick Flow® PowerPort® A460 series cylinder heads.