Originally posted by Horse:
Actually the Eaton -roots type supercharger is volumetric meaning that it will only alow a given amount of air through its screws at a time- anyone noticed that the lightning revs are limited far lower than those on a standard f-150? tis because above the redline on the lightning the blower actually makes it difficult for the engine to breath and can cause dead cylinders. For this reason I fail to see the why of the twin blower setup- why a centerfugal supercharger running though a roots- when at a given rpm the roots wont supply more and the air supply curve levels off- so you cant get more "top end" with a volumetric supercharger in your system.
sorry but I witnessed a 5.4L on a dyno the other day pull strong to 6500 and the torque/hp curve was still climbing.
