[Cliff R]

Mike, the biggest let down we had with direct testing was swapping out the iron intake for the Holley Street Dominator. The "seat of the pants" meter has the Holley intake a SOLID winner against the iron intake. The power curve is BRUTAL with the SD intake, it will tear your head slam off from 3500-5500rpm's and "pulls" noticably harder up near the shift point that the iron intake. In constrast, the power curve from the iron intake is somewhat boring. It just pulls hard from right off idle to the shift point, sort of like a locomotive, strong, but no big rush of power anywhere. Even so, at the track the iron intake is near .2 and 2mph better than the single plane intake, every time!

I'm come to learn that the "rush" of power provided by the single plane intake is a LOSS of power below 3500rpm followed by a CONCENTRATION of power above 3500rpm. We feel the TRANSITION between the two and the seat of the pants meter tells us that it's an improvment. In reality, with my car, having conservation gearing/converter more power is transmitted to the pavement for the entire run and we go thru right at 5100rpm/115mph...so we don't benefit from any improved top end charge from the single plane intake. As some have noted, a "looser" converter and a gear change might improve performance....but....for our daily driven vehicle it is NOT going to happen as it would degrade driveability and reliability.....Cliff