hey guys im about to send my heads to get ported but i had a few questions before i do. the first one is, do they port the valve hole? or just the exhaust hole? if they do mess with the hole for the valves, what would be a good valve size for a daily driver?

 

Stock valves should be fine. Whether they do a valve job on them or not depends on if you asked them to. If you need to buy new valves anyway, get the 2.0/1.56 valves.

 

o i see. thanks! i think ill stick to the stock size then. do you guys know the stock flow numbers on lt1 heads?

 

http://www.malcams.com/legacy/misc/headflow.htm