the allen is a eaton roots type of blower it will produce boost at very low revs vs a vortec or any other centrifigual blower which will take about 3000 or so until it starts building boost. You need to do a lot of research. The allen would prob be best for a daily driver.
2x95 cougars to the scapper
97 F250 psd 4x4 dd twin charged
48 Gmc Detroit diesel 453t twin sticked
45 Chevy 451 detroit twin sticked
51 Mack A51T restoration
Last edited by twin turbo 281; 11-16-2007 at 05:26 AM.