Chevrolet Performance 19331430 - Bowtie 572/720R Cylinder Head Assembly

• Aluminum racing head assembly • Used in the 572/720R Chevrolet Performance crate engine • Completely assembled with 2.250"/1.880" 11/32" stem valves • Mechanical roller valve springs—not for use with hydraulic roller cams • Good to .720" valve lift • 310cc rectangular intake port • 118cc exhaust port—raised 5/8" • 118cc combustion chamberAluminum racing head assembly • Used in the 572/720R Chevrolet Performance crate engine • Completely assembled with 2.250"/1.880" 11/32" stem valves • Mechanical roller valve springs—not for use with hydraulic roller cams • Good to .720" valve lift • 310cc rectangular intake port • 118cc exhaust port—raised 5/8" • 118cc combustion chamber This head is assembled with the following components: • 12366987 2.250" Intake Valves • 88963935 Valve Spring Locators • 88963128 1.880" Exhaust Valves • 88963936 Valve Seals • 19172596 Valve Springs • 3921912 Rocker Arm Studs • 88963937 Valve Spring Shims • 3860038 Pushrod Guideplates