Evolution Flow Charts

All our numbers are tested at 10? of test pressure

Intake Flow

Head Type	Valve Type	.100?	.200?	.300?	.400?	.500?	.600?	Total
Stock	1.840 HD	36	76	108	122	126	127	595 cfm
Ported	1.900 HQ	37	79	115	137	137	142	647 cfm
Stock SE	1.900? HD	33	67	96	119	136	146	597 cfm
Ported SE	1.900? HQ	36	72	100	122	139	150	610 cfm

Exhaust Flow

Exhaust Flow