The only other person I know of that did an A-B test (*I Think*) of these intakes is Locomotion on his race car in a crate motor class. He ET’s better with the Weiand. IIRC. And as he would say, “For MY combo....”
Actually it was a Weiand Stealth vs a Holley Strip Dominator, both with a 2" 4-hole spacer, tested on the same day. The Holley was faster. But I had much more cam duration, converter and gear. While trying to optimize the Stealth, I found that the deeper plenum side liked 2-3 numbers bigger jets (or leaner on the shallow side)! It may have helped .05. I noticed the plug coloring pattern when I had all the plugs in order in a holder. The coloring difference coincided with the side being fed from. I don't know if it's the same for all dual planes.
