Allen actually recommended the LS6 cam for my 4x4, and you wont lose a ton of low end, its a very minimal loss. The lsa is 117.5. The torque cuve is much flatter and is more of an upward slope than before so it pulls through all the shifts. The main part of the powerband actually starts right at 3k, thats where is starts to rocket up. Best of all I have lost NO driveability and power still kicks ass down low.

Chris