The most important area in a flowed head is the 1/2 inch before the valve seat.I dont think 10% is realistic ,but under the theory of every little bit helps it could be a better running engine with the casting flash smoothed out.Now all kinds of guys are gonna warn you about smooth intake ports,fuel puddling etc etc.Im just saying it cant hurt.If you really want to go at it you need Cratex rubberized grinding wheels and work the seat area to a nice radius in and out of the valve seat.Kinda like a 30 thousand dollar Serdi does with cutters.I have a whole file drawer on air flow and there is quite a bit to it.You are trying to improve volumetric efficency.Other improvements of power are thermal efficiency,and mechanical,but biggest gains are from volumetric efficency improvments.So yeah it cant hurt power[it can really but thats a whole new subject called ports too large]
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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