Flow Data from Intake Valve Relocation

Earlie A said
Point taken, but not necessarily agreed with. I do appreciate having my thinking challenged. It's how we learn new things.

Now here's why I say I don't necessarily agree. I am thinking street head which means less overlap. A 50 degree seat will help prevent reversion. A 40 degree top cut will really help prevent reversion, especially if we compare it to a OOTB Edelbrock with their crazy 0 degree top cut. With the intake and exhaust valves sunk in their individual 'cones' there will be almost no line of site between the two. So in my way of thinking even if they do flow well in reverse (which I do not expect) I would not do anything to try to hurt forward flow just to prevent reverse flow. But I will admit, that just may be my current level of understanding. It changes all the time. I'm open to learning new things, but I usually need proof.

I really do appreciate the input. I'm here to learn and share, not argue. I hope that comes across in my 'tone'.

You can’t have proof of anything unless YOU test it. That’s my point. Just because I say it or Morgan says it doesn’t mean it’s gospel.

Darin and I don’t agree on several areas. One being when to use a 50 degree seat. I use them on anything I can and I’ve never lost power doing it. He says if you don’t have some arbitrary lift number they lose power. My testing (and others have tested it too) and that’s not the results we found.

If you think that hurting a flow number on the bench is bad, you’ll end up with oversized ports. Bigger holes always flow better.

I’ve said it before but the Stage VI head requires porting that is “wrong” by most every account.

I have a customer that his Stage VI heads made more power than his B1’s. On the dyno and at the track.

Then I did his B1’s and that was the first single 4 I did that went over 1k, and they used 20w50 oil (that killed probably 15, maybe 20 horsepower right there) and the plugs said it was dead fat.

The point is don’t fall in love with flow numbers. Flow and test anything you can. Raise and lower the test pressure.

Way more learning and useful information from that than just flowing a port.