Air Gap vs. M1 Single Plane For Stroker

Mean416 said

I have been watching a lot of Dyno testing of different combinations lately and there's a guy, his name is Richard Holdener. Check him out on YouTube. Very sharp guy and makes some very interesting observations and explanations of things. He has done a ton of tests comparing single to dual plane, shirt runner and long runner intakes and it almost always leans toward the long runner or dual planes, anywhere under 6k. Not just small displacement street motors eithi. His point on this is regardless of displacement, boost or no boost, the intakes generally are more rpm dependant than anything else. And he backs this up with Dyno pulls. And we're not talking 5 ft lbs torque. It's often like 30-50 ft lbs for large stretches of the power curve. That's a big reason why I've been seriously pondering this in the first place.

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YouTube videos are the new car magazine. You just can’t swap intake manifolds and look at the results. Everything is affected by everything else. If you don’t take that into account you get bad data. The other thing to think about is how a dyno works. Like a flow bench or a Vice grip it has limitations. You have to know what those are and deal with them. Different dyno types produce results. An eddy current dyno won’t tell you the same things a water brake dyno will, and it will have different limitations as well. Throw in an inertia dyno and you have another set of variables and limitations to cope with. What I’m saying is one intake manifold may look really good on say a water brake dyno and look like crap on an eddy current dyno, but the track results may say the eddy current dyno numbers were correct. Or maybe not. I guess the point I’m making is dyno results are not the final say in what works and what doesn’t. It’s a tool with benefits and limitations and you have to understand that when using data from a dyno to make a decision on what parts to use.