AFR BBC Aluminum Heads Rectangular Port 335cc Assembled

AFR BBC aluminum heads rectangular port flowing 335cc with 2.300 Intake/ 1.880 exhaust valves with a 24 degree valve angle. Recommended for radical street/strip or “Pro Street” builds with displacements up to 572 cubic inches, operating up to 7000 RPM. Big Block Chevy Cylinder Head Magnum Comp Assembled  2.300 / 1.880 in Valves 335 cc Intake 121 cc Chamber 1.625 in Springs Aluminum  Pair 335cc Competition Flow Chart   .200 .300 .400 .500 .600 .700 .800 Int 164 240 304 352 385 401 409 Exh 135 199 249 276 288 295 305 Test conducted at 28" of water (pressure) on Superflow 600Bore Size: 4.600", intake 3/4" radius plate exhaust, 2 1/8" curved pipe