1996 Chevy Truck Vortec Big Block Intake Airflow
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26.A cutter was used to unshroud the valve and remove the machine step in the combustion chamber. This freed up the airflow restriction around the exhaust valve, which will help increase the percentage of flow, providing us with something that's more along the lines of a good balance between exhaust and intake airflow numbers. After the port work was done, the heads flow 271 cfm at 0.550 inch on the intake and 204 cfm at 0.550 on the exhaust. View Related Article
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