Let’s have another discussion. This time TrickFlow heads.

pittsburghracer said

I’m going to eat and then reread that. My thoughts are like we said above I personally think it may help in low horsepower applications. The air speed across the top of the port is probably 1/3 of what the short side speed is. And has an easier entrance into the cylinder. (No sharp turn) As far as directing flow after I do everything I can to in most cases SLOW the airspeed down at the shortside I reshape it to direct air towards the center of the port and away from the wall on the cylinder wall side. I think the bowl needs volume to perform not a big obstacle in the bowl. But Hey I’m just a retired millwright that likes to make little pieces out of big pieces.

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If You look at the pic PRH posted, it's actually a ramp/wing combo, which is to create fuel sheer & distribution in dynamically active apps. Say road course/street race/short track etc. I am contemplating fooling with the concept on the iron Olds heads I'm working out right now, but proper wet-flow testing is difficult, and I'm not confident I will be getting meaningful results with the techniques I considered employing. I can tell You that the LS7 head that they developed using that very form was reportedly a real PIA balancing act flow vs fuel quality, but was successful when worked out. Most drag folks will be in the top 1,500rpm of the mill's range 95% of the time+, so there probably isn't much to be gained, if anything for all of that work.