Ported Heads

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LS954

MH-60S Airframer, USN!!
Joined
Nov 18, 2007
Messages
351
When my heads were sent to get port and polished i didnt upsize the valves, just had the intake ports opened up and the intake opened up to match. Was wondering if i cut myself short by not upsizing the valves.
 
Not much. You'd gain .06" on the intake: 1.71" stock to 1.77".
Exhaust valve stays the same size at 1.50".
That said, every little bit helps.
 
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