My Barracuda works best with my Caltracs set like this (all adjustments were made on a flat level surface):

Bottom hole, 1 flat preload driver side, 2 flats preload passenger side.
Rear shocks set on 6.

I also used Calverts front shocks (90/10). This combo gives a nice level launch and hooks well with my Hoosier drag radials set at 18 psi. 11 is really too low for the tire to work properly.