The heads have all new valves and springs.So I was just thinking about polishing them up some.Later on I will find big valve heads or have bigger valves put in my heads.
When I had the heads off my 318 to heli-coil stripped exhaust holes, I just could not bring myself to put them back on without doing something. So I did a little pocket porting. And I mean a little. About 1-1/2 hrs total with a Dremel and stones. I just imagined myself being an air molecule rushing through the ports and smoothed things I would bump into. Also replaced the valve seals as some were in bad shape.
Two weeks after, I ran it at Norwalk and ran .5 second faster than my previous best.
CHEAP and dirty.
318+.020, Weiand, Carter AFB, unknown cam, 3.23 SG, 904, street tires, 14.77 seconds.