Originally posted by Derk2000:
Update
I talked to EH today. Here's the skinny:
There is a fellow that is sending his UIM for a "new method" of honing. Something about backflow sumpinerother. The point being, this new method is supposed to bump up the flow by a significant amount. He's expecting something in the 270 cfm range, IIRC (I didn't write it down )
This new method should be setup, performed, and flow tested within a month.
IMO).




I have a Q for the gurus. If the stock SVT heads flow maybe 215 CFM, would an UIM flowing 270 CFM be too much? Would this create too large a passage and reduce flow velocity?

For heads with 3L valves and big porting, I can see it..they have been flowed at about 270 CFM IIRC.

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