From: trentec_REMOVE_338273_THIS_@yahoo.com
You should size valves like any other part for an
engine, by intended usage. If your looking for tourque
below 5000 rpm 194 I 150 E would be more than enough
but wont breath well at higher rpms 202 I 160 E to
6500 maybe 7000 rpm at this rpm a 205 or 208 intake
valve would breath better. You have to justify the cost
if this is a street engine it wont get up there too
often. Put the horsepower where you can use it and put
the extra money in the bottom end.
[This is message #704 by user trentec on Yahoo! Club v8 hbody: http://clubs.yahoo.com/clubs/v8hbody ]