get the juice and get over 400 easy with about 100 shot

 

that would be too easy

 

with a stock bottom end 5.3 without any kind of power adder its guna be tough to get past 385 to the ground...expecially with a stalled automatic transmission.

i doubt im at the 400 mark to the wheels with my current setup...well, depending on the dyno i guess...which brings me to my next comment

WHO GIVES A **** ABOUT DYNO NUMBERS!!!!! all that matters is that the combo performs well. i dyno'd 279 to the ground and ran a 13.26. a dyno is a tuning tool. not a basis of performance. just another opinion ofcorse

 

As far as I've seen I don't know of anyone who's broken 400rwhp on a N/A 5.3L. Not saying it hasn't been done or can't be done, just saying I haven't seen anyone do it yet. Props on trying and I think your in good hands with WCCH.