WVhuggerSS

I have a set of cnc ported heads and would like to know if it would make them flow more if I took a flapper wheel and smoothed them up more where the machine lines are on the intake ports?

thunderstruck507

iTrader: (18)

leave them alone or you will do more harm than good

RAMPANT

iTrader: (17)

Yes, you get better flow with the machining step overs. Not as pretty, but more power.

WVhuggerSS

Thanks for the input guys, haha I will leave them alone then!

Marc 85Z28

iTrader: (8)

The CNC ridges are usually beneficial on the intake ports. However, the exhaust ports are just the opposite.

2000PewterT/A

Agreed, everyone thinks an intake port should be smooth which is just wrong, it the intake runner needs to be somewhat ruff to help with the A/F homogenization, if it is smooth the air/fuel will not mix properly and cause inefficient combustion. Basically unless you are a professional porter I would leave the heads alone.

WVhuggerSS

Okay I juss figured I would see, and yep the exhaust ports are smooth, lol Im a cnc machinist but not a professional porter so I wont mess with them!