The 725 intake is almost an inch shorter than the Super Victor, which means it might just fit under a stock hood. Since it is shorter, the 725 intake also has shorter intake runners, which in theory should move the torque peak up a little bit. When placed side by side with the Super Victor intake, we immediately noticed a few differences. Not only is the 725 intake shorter than the Super Victor, but the carb pad on the 725 intake is tilted forward at 3 degrees to keep the carb level in a production vehicle. The 725 intake also has built-in mounts for the factory style ignition coil, which is something that the Super Victor intake does not have.
We bolted the 725 intake onto our motor using the same Reher-Morrison shear plate combination and the same Holley 80672 Ultra HP Dominator carburetor. Everything on the engine, including the carb jetting, was left the same for the dyno pulls with the M1 intake since we didn't see any indication that anything needed to be changed from the settings used with the Super Victor intake.
The dyno results with the M1 intake were virtually identical to those obtained from the Super Victor testing. We saw a similar 640 lb/ft of torque at 4,100 rpm with maximum power down a tiny amount to 680 hp at 6,100 rpm. We were mildly surprised that the M1 intake generated basically identical results to the Super Victor intake, but not shocked. Both intakes have very similar shapes with the only difference being the slight difference in intake runners. The shorter runners of the M1 intake didn't affect the dyno numbers but it might change how the car launches off the line. Unfortunately, we won't know that until we do an intake comparison at the track.