GM 462

Flow numbers on this head are slightly better than those of the basic 441 heads..

• PORT SIZE: 156
• CHAMBER: 62cc
• VALVE SIZE: 1.94 / 1.5
• PRICE: N/A
• FLOW@.100: 50 / 54
• FLOW@.200: 119 / 88
• FLOW@.300: 167 / 116
• FLOW@.400: 198 / 128
• FLOW@.500: 212 / 134
• FLOW@.600: 218 / 137