My street numbers now are pretty much my race numbers before the plenum, but with street fuel and less boost . Right around 650/690 for the street numbers with pump gas and something like 10* timing and 18 lbs of boost. Before for those numbers I was at 16* timing C16 and 20 lbs. Race numbers now are 722/772 with C16 and 16* timing and 22 lbs of boost.
Street pulley setup is 10 lb lower and 3.5" upper (18 lbs)
Then I've got a 3.2" upper for 20 lbs, and a 3.0" upper for 22 lbs.
Man.. I can't wait to see what mine will make at 18psi.. lol.. These XR heads and plenum/tb setup definitely make a HUGE amount of power! Then, James was telling me that his dyno reads a little low.. :blink:
I'm going to wait till it gets cooler out before I turn the boost up any higher. The truck is a complete animal as it is, and I'm perfectly happy.
Travis